JP6658270B2 - VEHICLE DISPLAY CONTROL DEVICE, VEHICLE DISPLAY SYSTEM, VEHICLE DISPLAY CONTROL METHOD, AND PROGRAM - Google Patents

Description

  The present invention relates to a vehicle display control device, a vehicle display system, a vehicle display control method, and a program.

  There is known a technique in which a rear camera is used to take an image of a rear peripheral area of a vehicle and display the image on a rear view monitor instead of a conventional optical rearview mirror (for example, see Patent Document 1).

JP 2012-170127 A

  The rear camera can capture a larger area than the area reflected by the rearview mirror. When a range wider than the range reflected on the rearview mirror is displayed on the rearview monitor, the amount of information on the situation around the vehicle obtained by the driver from the rearview monitor is larger than the amount of information obtained from the rearview mirror. However, the amount of information that the driver can appropriately recognize when driving the vehicle is limited. For this reason, if the amount of obtained information is too large, the driver may have difficulty in properly recognizing the obtained information, and furthermore, it takes time to recognize the information. It will be long. Therefore, it is desired that the rear view monitor displays an appropriate amount of information that the driver can appropriately recognize.

  The present invention has been made in view of the above, and has as its object to display an amount of information appropriate for a driver.

  In order to solve the above-described problems and achieve the object, a display control device for a vehicle according to the present invention acquires captured video data from a rear camera that captures the rear of a vehicle, and displays a rear video of the vehicle. A display video data generating unit that generates display video data to be displayed on the display device, and a first range for the display video data, and a first range, which is arranged on both sides of the first range, A range setting unit for setting second ranges located on both sides, and reducing the amount of information obtained by the driver for the video data of the second range for which the range is set by the range setting unit 35 A video processing unit that performs an information amount reduction process; and a display control unit that causes the display device to display the display video data obtained by performing the information amount reduction process on the second range.

  A display system for a vehicle according to the present invention includes the display control device for a vehicle, at least one of the display device having a display width capable of displaying at least the first range and the second range, and the rear camera. It is characterized by having.

  The display control method for a vehicle according to the present invention obtains captured video data from a rear camera that captures the rear of the vehicle, and generates display video data to be displayed on a display device that displays a rear video of the vehicle. A video data generating step, and the amount of information obtained by the driver for video data in a second range located on both sides of the first range of the display video data and located on both sides of the display video data. And a display control step of causing the display device to display the display video data obtained by performing the information amount reduction processing on the second range.

  A program according to the present invention is a display image data generating step of acquiring captured image data from a rear camera that images the rear of a vehicle and generating display image data to be displayed on a display device that displays a rear image of the vehicle. And information obtained by the driver with respect to video data of a second range located on both sides of the first range of the display video data and located in a second range located on both sides of the display video data. A video processing step of performing an information amount reduction process for reducing the amount of the image, and a display control step of displaying, on the display device, the display video data that has been subjected to the information amount reduction process on the second range. The program is executed by a computer that operates as a control device.

  ADVANTAGE OF THE INVENTION According to this invention, there exists an effect that a suitable amount of information can be displayed for a driver.

FIG. 1 is a schematic diagram illustrating a configuration example of a vehicle display system according to the first embodiment. FIG. 2 is a block diagram illustrating a configuration example of the vehicle display system according to the first embodiment. FIG. 3 is a diagram illustrating an example of video data captured by a rear camera of the vehicle display system according to the first embodiment. FIG. 4 is a diagram illustrating an example of image data captured by a rear camera of the vehicle display system according to the first embodiment and an image displayed on a rear view monitor. FIG. 5 is a schematic diagram for comparing and explaining a rear view monitor of the vehicle display system according to the first embodiment and a conventional optical room mirror. FIG. 6 is a schematic diagram illustrating another example of the configuration example of the vehicle display system according to the first embodiment. FIG. 7 is a diagram illustrating an example of an image displayed on the rear view monitor of the vehicle display system according to the first embodiment. FIG. 8 is a diagram illustrating a first range and a second range of an image displayed on the rear view monitor of the vehicle display system according to the first embodiment. FIG. 9 is a diagram illustrating another example of an image displayed on the rear view monitor of the vehicle display system according to the first embodiment. FIG. 10 is a flowchart illustrating a flow of processing in the vehicle display system according to the first embodiment. FIG. 11 is a schematic diagram illustrating a configuration example of a vehicle display system according to the second embodiment. FIG. 12 is a diagram illustrating an example of an image displayed on the rear view monitor of the vehicle display system according to the second embodiment. FIG. 13 is a diagram illustrating another example of an image displayed on the rear view monitor of the vehicle display system according to the second embodiment. FIG. 14 is a schematic diagram illustrating a configuration example of a vehicle display system according to the third embodiment. FIG. 15 is a diagram illustrating an example of an image displayed on the rear view monitor of the vehicle display system according to the third embodiment. FIG. 16 is a diagram illustrating another example of an image displayed on the rear view monitor of the vehicle display system according to the third embodiment. FIG. 17 is a diagram illustrating another example of an image displayed on the rear view monitor of the vehicle display system according to the third embodiment. FIG. 18 is a diagram illustrating another example of an image displayed on the rear view monitor of the vehicle display system according to the third embodiment. FIG. 19 is a diagram illustrating an example of a second range ratio table in the vehicle display system according to the fourth embodiment. FIG. 20 is a flowchart illustrating a processing flow in the vehicle display system according to the fourth embodiment. FIG. 21 is a diagram illustrating an example of an image displayed on the rear view monitor of the vehicle display system according to the fourth embodiment. FIG. 22 is a diagram illustrating another example of an image displayed on the rear view monitor of the vehicle display system according to the fourth embodiment. FIG. 23 is a diagram illustrating another example of an image displayed on the rear view monitor of the vehicle display system according to the fourth embodiment. FIG. 24 is a diagram illustrating an example of a reduction rate table in the vehicle display system according to the fifth embodiment. FIG. 25 is a flowchart showing the flow of processing in the vehicle display system according to the fifth embodiment. FIG. 26 is a diagram illustrating an example of an image displayed on the rear view monitor of the vehicle display system according to the fifth embodiment. FIG. 27 is a diagram illustrating another example of an image displayed on the rear view monitor of the vehicle display system according to the fifth embodiment. FIG. 28 is a diagram illustrating another example of an image displayed on the rear view monitor of the vehicle display system according to the fifth embodiment.

  Hereinafter, with reference to an accompanying drawing, embodiment of display control device 10 for vehicles, display system 1 for vehicles, display control method for vehicles, and a program concerning the present invention is described in detail. The present invention is not limited by the following embodiments.

[First embodiment]
The vehicle display system 1 is mounted on a vehicle and displays an image of the rear of the vehicle. FIG. 1 is a schematic diagram illustrating a configuration example of a vehicle display system according to the first embodiment. FIG. 2 is a block diagram illustrating a configuration example of the vehicle display system according to the first embodiment. The rear of the vehicle includes the rear in the traveling direction and the side rear in the vehicle width direction. In the present embodiment, the rear side will be described, but the present invention is also applicable to the side rear side.

  As shown in FIGS. 1 and 2, the vehicle display system 1 includes a rear camera 2, a rear view monitor 3, and a vehicle display control device 10.

  The rear camera 2 is arranged behind the vehicle, and photographs the rear of the vehicle. FIG. 3 is a diagram illustrating an example of video data captured by a rear camera of the vehicle display system according to the first embodiment. FIG. 4 is a diagram illustrating an example of image data captured by a rear camera of the vehicle display system according to the first embodiment and an image displayed on a rear view monitor. As shown in FIGS. 3 and 4, the rear camera 2 captures an image of a range including the range confirmed by the rear view monitor 3. In other words, the rear camera 2 captures an image including a range that is not displayed on the rear view monitor 3. The rear camera 2 has a horizontal angle of view of, for example, 90 to 180 ° and a vertical angle of view of, for example, 45 to 90 °. As described above, the rear camera 2 can capture an image in a range wider than the range displayed on the rear view monitor 3. Therefore, the video captured by the rear camera 2 has a range in which the driver of the vehicle can properly recognize the rear using the rear view monitor 3 at the cutout unit 33 of the control unit 30 of the display control device 10 for a vehicle. It is cut out and displayed on the rear view monitor 3. The rear camera 2 outputs the captured video data 100 to the video data acquisition unit 32 of the control unit 30 of the display control device 10 for a vehicle.

  The rear view monitor 3 is, for example, an electronic room mirror. When the rear view monitor 3 is used as an electronic room mirror, the presence or absence of a half mirror for confirming the rear by optical reflection does not matter. The rear view monitor 3 is a display including, for example, a liquid crystal display (LCD) or an organic EL (Organic Electro-Luminescence) display.

  The rear view monitor 3 and a conventional optical room mirror R will be described with reference to FIG. FIG. 5 is a schematic diagram for comparing and explaining a rear view monitor of the vehicle display system according to the first embodiment and a conventional optical room mirror. The rear view monitor 3 is wider in the vehicle width direction than the conventional optical rearview mirror R. In the present embodiment, for example, the width in the vehicle width direction is 400 mm, and the width in the height direction is 50 mm. On the other hand, the conventional optical rearview mirror R has, for example, a width of 200 mm in the vehicle width direction and a width of 50 mm in the height direction.

  The rear view monitor 3 is arranged at a position that is easily visible from the driver. In the present embodiment, as shown in FIG. 1, the rear view monitor 3 is disposed above the center of the windshield S in the vehicle width direction. As shown in FIG. 6, the rear view monitor 3 may be arranged at the upper center of the dashboard D in the vehicle width direction. FIG. 6 is a schematic diagram illustrating another example of the configuration example of the vehicle display system according to the first embodiment.

  The rear view monitor 3 displays a rear video of the vehicle based on the video signal output from the display control unit 40 of the control unit 30 of the display control device 10 for a vehicle. Specifically, the rear view monitor 3 displays a rear image as shown in FIG. FIG. 7 is a diagram illustrating an example of an image displayed on the rear view monitor of the vehicle display system according to the first embodiment. The photographed image data 100 shown in FIG. 7 shows an object to be photographed including a following vehicle, a road, and a street tree.

  Returning to FIG. 2, the vehicle display control device 10 includes a storage unit 20 and a control unit 30.

  The storage unit 20 stores data required for various processes in the vehicle display control device 10 and results of various processes. The storage unit 20 is, for example, a semiconductor memory element such as a RAM (Random Access Memory), a ROM (Read Only Memory), a flash memory (Flash Memory), or a storage device such as a hard disk, an optical disk, or an external storage device via a network. It is. Alternatively, it may be an external storage device wirelessly connected via a communication device (not shown).

  The control unit 30 is, for example, an arithmetic processing device including a CPU (Central Processing Unit). The control unit 30 includes a display video data generation unit 31, an information acquisition unit 34, a range setting unit 35, a video processing unit 36, and a display control unit 40. The control unit 30 executes an instruction included in a program stored in the storage unit 20.

  The display video data generation unit 31 acquires the captured video data 100 from the rear camera 2 and generates the display video data 110 to be displayed on the rear view monitor 3. The display video data generation unit 31 includes a video data acquisition unit 32 and a cutout unit 33.

  The video data acquisition unit 32 acquires a video of the rear of the vehicle. The captured video data 100 acquired by the video data acquisition unit 32 is, for example, video data in which images at 60 frames per second are continuous. In the present embodiment, the video data acquisition unit 32 acquires the captured video data 100 output by the rear camera 2. The video data acquisition unit 32 outputs the acquired captured video data 100 to the extraction unit 33.

  The extracting unit 33 extracts a range to be displayed on the rear view monitor 3 from the captured video data 100. Which part of the captured video data 100 is cut out as a range to be displayed on the rear view monitor 3 is stored in the storage unit 20 in advance. In the present embodiment, the cutout unit 33 cuts out, as the display video data 110, the central portion of the captured video data 100, which is indicated by a broken line in FIG. The clipping unit 33 outputs the clipped display video data 110 to the range setting unit 35.

  The information acquisition unit 34 acquires vehicle speed information for determining a vehicle speed from an ECU (Electronic Control Unit) or a CAN (Control Area Network). Specifically, the information acquisition unit 34 acquires a vehicle speed signal. The information acquisition unit 34 outputs the acquired information to the video processing unit 36.

  The range setting unit 35 sets, for the display video data 110, a first range 110 </ b> A and second ranges 110 </ b> B arranged on both sides of the first range 110 </ b> A and located on both sides of the display video data 110. . In the present embodiment, as shown in FIG. 8, the first range 110A is set as a range with the center line L of the display video data 110 as the center axis. FIG. 8 is a diagram illustrating a first range and a second range of an image displayed on the rear view monitor of the vehicle display system according to the first embodiment. In the present embodiment, the first range 110A has a width of 200 mm in the vehicle width direction. The second range 110B has a width of 100 mm in the vehicle width direction. The first range 110A is a range in which the driver can visually recognize the conventional optical room mirror R when the driver looks straight ahead. The second range 110B includes a range that is not visible when the driver looks straight ahead at the conventional optical rearview mirror R, but is visible when the viewpoint is shifted or the angle is adjusted, and a range outside the range. The range setting unit 35 outputs the display video data 110 in which the first range 110A and the second range 110B have been set to the video processing unit 36.

  The video processing unit 36 performs an information amount reduction process of generating display image data 120 with a reduced information amount and outputting the display image data 120 to the display control unit 40 for the second range 110 </ b> B of the display image data 110. The display video data 120 includes a first range 120A in which the information amount is not reduced, and a second range 120B in which the information amount is reduced.

  The information amount is the amount of information on the situation around the vehicle obtained from the image displayed on the rear view monitor 3 by the driver. The amount of information increases as the display area of the image displayed on the rear view monitor 3 increases. The amount of information increases as the number of objects displayed on the rear view monitor 3 increases. The amount of information increases as the number of colors included in the image displayed on the rear view monitor 3 increases. The amount of information increases as the luminance of the image displayed on the rear view monitor 3 increases.

  The amount of information that the driver can properly recognize when driving the vehicle is limited, and the higher the vehicle speed, the less the amount of information that the driver can properly recognize, and the narrower the recognition range. It has been known. Further, as the vehicle speed becomes higher, the time for viewing the rear view monitor 3 becomes shorter. More specifically, as the speed of the vehicle increases, the range in which the driver can properly recognize the rear is the range that can be visually recognized by the conventional optical rearview mirror R, in other words, the first range 110A in the display image data 110 is optimal. is there. In other words, when the vehicle speed is low, the information can be properly recognized even if the information amount is larger than the information amount that can be visually recognized by the conventional optical room mirror R.

  Therefore, when the vehicle speed is equal to or higher than the predetermined speed, the video processing unit 36 generates the display video data 120 in which the information amount of the second range 110B is reduced so that the information is required by the driver and is narrowed down to the recognizable information. More specifically, when the vehicle speed acquired by the information acquisition unit 34 is equal to or higher than the predetermined speed, the video processing unit 36 reduces the information amount of the second range 110B of the display video data 110, for example, as shown in FIG. An information amount reduction process for generating the generated display video data 120 and outputting it to the display control unit 40 is performed. FIG. 9 is a diagram illustrating another example of an image displayed on the rear view monitor of the vehicle display system according to the first embodiment. The display video data 120 has a reduced amount of information within a range in which the driver can recognize the presence or absence of the object from the second range 120B.

  When the vehicle speed is lower than the predetermined speed, the video processing unit 36 outputs the display video data 110 to the display control unit 40. The video processing unit 36 has a reduction processing unit 37.

  The reduction processing unit 37 performs, for example, color information reduction processing for reducing color information and luminance reduction processing for reducing luminance as information amount reduction processing.

  The color information reduction process is a process of generating display image data 120 in which the color information of the second range 110 </ b> B of the display image data 110 has been reduced and outputting the display image data 120 to the display control unit 40. For example, the color information reduction process generates display video data 120 in which the saturation of each of RGB in the second range 110B of the display video data 110 is reduced by a predetermined amount or a predetermined ratio, and outputs the generated display video data 120 to the display control unit 40. Alternatively, for example, in the color information reduction processing, the display image data 120 in which the saturation of the second range 110B of the display image data 110 is set to a predetermined amount or a predetermined ratio, low monochrome or black and white is generated and output to the display control unit 40. You may.

  The brightness reduction process is a process of generating the display video data 120 in which the brightness of the second range 110 </ b> B of the display video data 110 is reduced and outputting the generated display video data 120 to the display control unit 40. For example, the brightness reduction processing generates display video data 120 in which the brightness of each pixel in the second range 110B of the display video data 110 is reduced by a predetermined amount or a predetermined ratio, and outputs the generated display video data 120 to the display control unit 40. Alternatively, for example, instead of generating the display video data 120, the backlight of the rear view monitor 3 corresponding to the first range 110A is set to the normal brightness, and the backlight of the rear view monitor 3 corresponding to the second range 110B is used. A control signal for reducing the light by a predetermined amount or a predetermined rate from the normal luminance may be generated and output to the display control unit 40 together with the display video data 110.

  The reduction processing unit 37 may perform either the color information reduction processing or the luminance reduction processing, or may perform both in combination.

  The display control unit 40 causes the rear view monitor 3 to display the display video data 110 or the display video data 120 output from the video processing unit 36.

  Next, the flow of processing by the control unit 30 will be described with reference to FIG. FIG. 10 is a flowchart illustrating a flow of processing in the vehicle display system according to the first embodiment.

  The control unit 30 causes the video data obtaining unit 32 to obtain the captured video data 100 (Step S11).

  The control unit 30 causes the cutout unit 33 to perform a cutout process (step S12). More specifically, the control unit 30 causes the cutout unit 33 to cut out the range to be displayed on the rear view monitor 3 as the display video data 110 from the captured video data 100.

  The control unit 30 causes the video processing unit 36 to determine whether or not the vehicle speed is equal to or higher than a predetermined speed (step S13). More specifically, the control unit 30 determines whether or not the vehicle speed is equal to or higher than a predetermined speed in the video processing unit 36 based on the information acquired by the information acquiring unit 34. In the present embodiment, the predetermined speed is, for example, 20 km / h or 40 km / h. It is preferable that the predetermined speed is set such that the amount of information by the display without reducing the amount of information in the second range 110B is within the range of the amount of information at which the driver can appropriately recognize the rear. For example, when the traveling speed is less than 20 km / h or 40 km / h, the viewing time of the rear view monitor 3 is longer than that at the time of high-speed traveling, and the information of the second range 110B is often required. This is because, when the vehicle is traveling at a traveling speed equal to or higher than the predetermined speed, the viewing time of the rear view monitor 3 is shorter than when the vehicle is traveling at a speed lower than the predetermined speed, and the need for information on the second range 110B is reduced.

  When the video processor 36 determines that the vehicle speed is not higher than the predetermined speed (No in Step S13), the controller 30 proceeds to Step S15. The control unit 30 causes the display processing unit 36 to output the display video data 110 to the display control unit 40.

  When the video processing unit 36 determines that the vehicle speed is equal to or higher than the predetermined speed (Yes in Step S13), the control unit 30 proceeds to Step S14.

  The control unit 30 causes the reduction processing unit 37 to perform the information amount reduction processing of the second range 110A of the display video data 110 (Step S14). More specifically, the control unit 30 causes the reduction processing unit 37 to reduce the information amount of the second range 110B of the display video data 110.

  For example, the control unit 30 causes the reduction processing unit 37 to generate the display video data 120 in which the saturation of each of the RGB in the second range 110B of the display video data 110 is reduced, and output the display video data 120 to the display control unit 40.

  Alternatively, for example, the control unit 30 causes the reduction processing unit 37 to generate the display video data 120 in which the second range 110B of the display video data 110 is converted into, for example, a single color or black and white with low saturation and output the display video data 120 to the display control unit 40. You may.

  Alternatively, for example, the control unit 30 may cause the reduction processing unit 37 to generate the display video data 120 in which the brightness of each pixel in the second range 110B of the display video data 110 is reduced and output the display video data 120 to the display control unit 40. .

  Alternatively, for example, the control unit 30 causes the reduction processing unit 37 to set the backlight of the rear view monitor 3 corresponding to the first range 110A to normal brightness, and set the backlight of the rear view monitor 3 corresponding to the second range 110B to normal brightness. The control signal for reducing the luminance may be output to the display control unit 40 together with the display video data 110.

  The control unit 30 causes the display control unit 40 to display the display video data 110 or the display video data 120 on the rear view monitor 3 (step S15). More specifically, when the vehicle speed is lower than the predetermined speed, the control unit 30 causes the display control unit 40 to display the display video data 110 as shown in FIG. When the vehicle speed is equal to or higher than the predetermined speed, the control unit 30 causes the display control unit 40 to display, on the rear view monitor 3, display video data 120 with a reduced amount of information as shown in FIG.

  The control unit 30 repeats such processing at a predetermined interval, for example, every frame or every predetermined frame.

  As described above, according to the present embodiment, when the vehicle speed is equal to or higher than the predetermined speed, the display image data 120 with a reduced amount of information is displayed on the rear view monitor 3 in the second range 120B. When the vehicle speed is lower than the predetermined speed, the display video data 110 whose information amount is not reduced is displayed on the rear view monitor 3. On the rear view monitor 3, display video data 110 or display video data 120 of an amount of information that can be easily recognized by the driver is displayed according to the vehicle speed. As described above, according to the present embodiment, it is possible to display an information amount appropriate for the driver according to the vehicle speed. As a result, according to the present embodiment, the driver can appropriately check around the vehicle regardless of the vehicle speed.

  According to the present embodiment, when the vehicle speed is equal to or higher than the predetermined speed, the information amount reduction processing is performed on the second range 110B of the display video data 110. In other words, according to the present embodiment, the information amount of the first range 110A that can be visually recognized when the driver looks straight ahead at the conventional optical room mirror R is not reduced regardless of the vehicle speed. For this reason, in the present embodiment, it is possible to always confirm the rear side similarly to the conventional optical rearview mirror R.

  According to the present embodiment, the second range 120B of the display video data 120 is such that the driver can recognize the presence or absence of the object to be photographed, and the driver has a difference in the amount of information between the first range 120A and the second range 120B. The amount of information is reduced in a range in which can be recognized. For this reason, in the present embodiment, even if the amount of information in the second range 120B is reduced, the driver can obtain information desired from the second range 120B as needed. Thereby, the driver can take an appropriate avoidance action as needed.

[Second embodiment]
The display system 1A for a vehicle according to the present embodiment will be described with reference to FIGS. FIG. 11 is a schematic diagram illustrating a configuration example of a vehicle display system according to the second embodiment. FIG. 12 is a diagram illustrating an example of an image displayed on the rear view monitor of the vehicle display system according to the second embodiment. FIG. 13 is a diagram illustrating another example of an image displayed on the rear view monitor of the vehicle display system according to the second embodiment.

  As shown in FIG. 11, the vehicle display system 1A has the same basic configuration as the vehicle display system 1 of the first embodiment. In the following description, the same components as those of the vehicle display system 1 will be assigned the same reference numerals or corresponding reference numerals, and detailed description thereof will be omitted. In the vehicle display system 1A of the present embodiment, the control unit 30A of the vehicle display control device 10A is different from the vehicle display system 1 of the first embodiment.

  The video processing unit 36A includes a reduction processing unit 37A and a feature point extraction unit 38A.

  The feature point extraction unit 38A extracts the feature points of the object from the second range 110B of the display video data 110, generates the illustrated display video data 130, and outputs it to the display control unit 40A as the information amount reduction process. Perform reduction processing. The feature point extracting unit 38A extracts, for example, a corner from the second range 110B of the display video data 110 as a feature point of the object using a known feature point extraction method. Then, the feature point extracting unit 38A generates the display video data 130 that connects the extracted corners and shows a broken line (see FIG. 12) representing the outline of the object. The display video data 130 includes a first range 130A in which the information amount is not reduced, and a second range 130B in which feature points are illustrated. When the feature points of the object to be photographed are extracted in detail in the display image data 130, the difference in the amount of information from the display image data 110 decreases, and it may take time to recognize the object. On the other hand, in the display video data 130, if the feature points of the object are roughly extracted, the difference in the amount of information from the display image data 110 increases, and the object may not be correctly recognized. For this reason, the threshold value is set in the feature point extraction unit 38A so that the feature point is appropriately extracted. More specifically, the threshold value is a value from which a minimum necessary contour capable of recognizing the outline of the object can be extracted.

  An example of the display video data 130 will be described with reference to FIG. The display video data 130 shown in FIG. 12 is the display video data 130 generated from the display video data 110 shown in FIG. In the display video data 130, the characteristic points of the following vehicle, the characteristic points of the road and the guardrail, and the characteristic points of the street tree are shown by broken lines.

  The feature point extracting unit 38A outputs the generated display video data 130 to the display control unit 40A as display video data.

  As the information amount reduction process, the information amount reduction process of the present embodiment may be performed alone, or may be performed in combination with the information amount reduction process of the first embodiment.

  A case will be described in which the information amount reduction processing of the present embodiment is performed alone and the display video data 130 from which the characteristic points have been extracted is displayed on the rear view monitor 3. More specifically, the control unit 30A performs a display in which the feature points of the second range 110B of the display video data 110 are extracted by the feature point extraction unit 38A in step S14 of the flowchart illustrated in FIG. The video data 130 is output to the display control unit 40A. Then, the control unit 30A causes the display control unit 40A to display the display video data 130 on the rear view monitor 3.

  The information amount reduction process of the present embodiment and the information amount reduction process of the first embodiment are performed in combination, and the display video data 120 with the reduced information amount and the display video data 130 with the extracted feature points are superimposed. The case where the image is displayed on the rear view monitor 3 will be described. More specifically, in step S14 of the flowchart shown in FIG. 10, the control unit 30A causes the reduction processing unit 37A to generate the display video data 120 in which the information amount of the second range 110B of the display video data 110 is reduced. Then, the control unit 30A causes the feature point extraction unit 38A to generate the display video data 130 in which the feature points in the second range 110B of the display video data 110 are extracted as shown in FIG. Then, the control unit 30A uses the feature point extraction unit 38A to display the display video data 140 obtained by superimposing the display video data 120 and the display video data 130 with the information amount reduced as shown in FIG. Output. The display video data 140 includes a first range 140A in which the amount of information is not reduced, and a second range 140B in which color information or luminance is reduced and feature points are illustrated. Then, the control section 30A causes the display control section 40A to display the display video data 140 on the rear view monitor 3.

  As described above, according to the present embodiment, when the vehicle speed is equal to or higher than the predetermined speed, the rear view monitor 3 has a reduced amount of information in the second range 130 </ b> B, and the characteristic points of the second range 110 </ b> B of the display video data 110. Are displayed by broken lines. When the vehicle speed is lower than the predetermined speed, the display video data 110 whose information amount is not reduced is displayed on the rear view monitor 3. On the rear view monitor 3, display video data 110 or display video data 130 of an amount of information that the driver can easily recognize is displayed according to the vehicle speed. As described above, according to the present embodiment, it is possible to display an information amount appropriate for the driver. As a result, according to the present embodiment, the driver can appropriately check around the vehicle regardless of the vehicle speed.

  Further, according to the present embodiment, when the vehicle speed is equal to or higher than the predetermined speed, the display image data 120 in which the information amount of the second range 110B of the display image data 110 is reduced, and the second range 110B of the display image data 110 The display video data 140 on which the display video data 130 from which the feature points have been extracted is superimposed is displayed on the rear view monitor 3. Thus, according to the present embodiment, it is possible to easily recognize the object even when the amount of information is reduced. Moreover, according to the present embodiment, the display video data 140 shows the feature points representing the outline of the object, so that the driver can easily recognize the presence or absence of the object.

[Third embodiment]
A display system 1B for a vehicle according to the present embodiment will be described with reference to FIGS. FIG. 14 is a schematic diagram illustrating a configuration example of a vehicle display system according to the third embodiment. FIG. 15 is a diagram illustrating an example of an image displayed on the rear view monitor of the vehicle display system according to the third embodiment. FIG. 16 is a diagram illustrating another example of an image displayed on the rear view monitor of the vehicle display system according to the third embodiment. FIG. 17 is a diagram illustrating another example of an image displayed on the rear view monitor of the vehicle display system according to the third embodiment. FIG. 18 is a diagram illustrating another example of an image displayed on the rear view monitor of the vehicle display system according to the third embodiment.

  As shown in FIG. 14, the vehicle display system 1B of this embodiment has a recognition dictionary storage unit 4B, and the configuration of the control unit 30B of the vehicle display control device 10B is different from that of the second embodiment. Different from 1A.

  The recognition dictionary storage unit 4B stores, for example, a dictionary capable of matching patterns such as shapes, sizes, and colors of objects including automobiles, motorcycles, and people. The recognition dictionary storage unit 4B is, for example, a semiconductor memory device such as a RAM, a ROM, or a flash memory, or a storage device such as a hard disk, an optical disk, or an external storage device via a network.

  The video processing unit 36B includes a reduction processing unit 37B, a feature point extraction unit 38B, and an object recognition unit 39B.

  The feature point extraction unit 38B performs the same processing as the feature point extraction unit 38A of the second embodiment. The feature point extracting unit 38B outputs the display video data 130 obtained by extracting the feature points shown in FIG. 12 to the object recognizing unit 39B.

  The object recognizing unit 39B generates display video data in which an object existing in the second range 130B of the display video data 130 is replaced with an icon (display indicating a vehicle) M or the icon M is superimposed on the object, as an information amount reduction process. A process for outputting to the display control unit 40B is performed. In the present embodiment, the object recognition unit 39B recognizes a vehicle as an object. In the present embodiment, the icon M is a ring. The icon M may have another shape such as a diagram of a vehicle. More specifically, the object recognition unit 39B performs pattern matching on the second range 130B of the display video data 130 using the recognition dictionary stored in the recognition dictionary storage unit 4B, and detects the presence of an object. Then, the object recognition unit 39 generates display video data in which the object is replaced with the icon M or the icon M is superimposed on the object, and outputs the display image data to the display control unit 40B. Since the object recognizing unit 39B performs pattern matching on the display video data 130 whose information amount has been reduced as compared with the display video data 110, the load and time required for the processing can be reduced.

  The information amount reduction processing may be performed independently of the information amount reduction processing of the present embodiment, or may be performed as appropriate in combination with the information amount reduction processing of the first embodiment and the information amount reduction processing of the second embodiment. .

  A case will be described in which the information amount reduction processing of the present embodiment is performed alone and only the icon M is displayed. More specifically, the control unit 30B causes the feature point extraction unit 38B to extract the feature points in the second range 110B of the display video data 110 to generate the display video data 130 in step S14 of the flowchart shown in FIG. Then, the control unit 30B causes the object recognition unit 39B to recognize an object in the second range 130B of the display video data 130. Then, the control unit 30B causes the object recognition unit 39B to replace the second range 130B of the display image data 130 with an image in which the icon M is displayed at a position corresponding to the object, as shown in FIG. Is generated and output to the display control unit 40B. The display video data 200 includes a first range 200A in which the information amount is not reduced, and a second range 200B in which the icon M is displayed. Then, the control unit 30B causes the display control unit 40B to display the display video data 200 on the rear view monitor 3.

  A case will be described in which the information amount reduction processing of the present embodiment and the information amount reduction processing of the first embodiment are performed in combination, and the icon M is superimposed and displayed on the display video data 120 whose information amount has been reduced. More specifically, in step S14 of the flowchart shown in FIG. 10, the control unit 30B causes the reduction processing unit 37 to generate the display video data 120 in which the information amount of the second range 110B of the display video data 110 is reduced. Then, the control unit 30B causes the feature point extraction unit 38B to extract the feature points in the second range 110B of the display video data 110 to generate the display video data 130. Then, the control unit 30B causes the object recognizing unit 39B to recognize an object in the second range 130B of the display video data 130 from which the feature points have been extracted. Then, the control unit 30B causes the object recognizing unit 39B to generate the display video data 210 in which the icon M is superimposed on the second range 120B of the display video data 120 in which the information amount is reduced, as illustrated in FIG. The display control unit 40B is caused to output. The display video data 210 includes a first range 210A in which the information amount is not reduced, and a second range 210B in which the color information or the brightness is reduced and the icon M is displayed in a superimposed manner. Then, the control unit 30B causes the display control unit 40B to display the display video data 210 on the rear view monitor 3.

  A case will be described in which the information amount reduction processing of the present embodiment and the information amount reduction processing of the second embodiment are performed in combination, and the feature point and the icon M are displayed in a superimposed manner. More specifically, the control unit 30B causes the feature point extraction unit 38B to extract the feature points in the second range 110B of the display video data 110 to generate the display video data 130 in step S14 of the flowchart shown in FIG. Then, the control unit 30B causes the object recognition unit 39B to recognize an object in the second range 130B of the display video data 130. Then, the control unit 30B causes the object recognition unit 39B to generate the display video data 220 in which the icon M is superimposed on the second range 130B of the display video data 130 as shown in FIG. Let it. The display video data 220 includes a first range 220A in which the information amount is not reduced, and a second range 220B in which the feature point and the icon M are displayed in a superimposed manner. Then, the control unit 30B causes the display control unit 40B to display the display video data 220 on the rear view monitor 3.

  The feature amount and the icon M are superimposed on the display video data 120 in which the information amount is reduced by performing the information amount reduction process of the present embodiment in combination with the information amount reduction process of the first embodiment and the second embodiment. It may be displayed. More specifically, in step S14 of the flowchart shown in FIG. 10, the control unit 30B causes the reduction processing unit 37B to generate the display video data 120 in which the information amount of the second range 110B of the display video data 110 is reduced. Then, the control unit 30B causes the feature point extraction unit 38B to extract the feature points in the second range 110B of the display video data 110 to generate the display video data 130. Then, the control unit 30B causes the object recognition unit 39B to recognize an object in the second range 130B of the display video data 130. Then, the control unit 30B causes the object recognition unit 39B to generate display video data 230 in which the display video data 120, the display video data 130, and the icon M are superimposed, as shown in FIG. Output. The display video data 230 includes a first range 230A in which the information amount is not reduced, and a second range 230B in which the color information or the luminance is reduced and the feature point and the icon M are displayed in a superimposed manner. Then, the control unit 30B causes the display control unit 40B to display the display video data 230 on the rear view monitor 3.

  As described above, according to the present embodiment, when the vehicle speed is equal to or higher than the predetermined speed, an object in the second range 110B of the display video data 110 is displayed on the display video data 200 or the display video data 210 or the display video data 210 The video data 220 or the display video data 230 is displayed on the rear view monitor 3. Accordingly, when the vehicle speed is equal to or higher than the predetermined speed, the rear view monitor 3 displays the second range 200B, the second range 210B, the second range 220B, or the second range 230B on the display image data 200 or the display image data in which the icon M is displayed. The video data 210 or the display video data 220 or the display video data 230 is displayed. For this reason, in the present embodiment, an object in the second range 200B, the second range 210B, the second range 220B, or the second range 230B in which the amount of information is reduced can be displayed more easily. As a result, in the present embodiment, even if the color information or the luminance is reduced, it is possible to easily recognize the object to be photographed. As described above, according to the present embodiment, it is possible to display an information amount appropriate for the driver according to the vehicle speed. As a result, according to the present embodiment, it is possible to appropriately confirm the vicinity of the vehicle.

[Fourth embodiment]
The display system for a vehicle according to the present embodiment will be described with reference to FIGS. FIG. 19 is a diagram illustrating an example of a second range ratio table in the vehicle display system according to the fourth embodiment. FIG. 20 is a flowchart illustrating a processing flow in the vehicle display system according to the fourth embodiment. FIG. 21 is a diagram illustrating an example of an image displayed on the rear view monitor of the vehicle display system according to the fourth embodiment. FIG. 22 is a diagram illustrating another example of an image displayed on the rear view monitor of the vehicle display system according to the fourth embodiment. FIG. 23 is a diagram illustrating another example of an image displayed on the rear view monitor of the vehicle display system according to the fourth embodiment.

  The display system for a vehicle according to the present embodiment is different from the display system for a vehicle 1 according to the first embodiment in processing in the control unit 30. Other configurations are the same as those of the vehicle display system 1 of the first embodiment.

  The range setting unit 35 sets a first range 110A and a second range 110B of the display video data 110 according to the vehicle speed. The range setting unit 35 sets the first range 110A wider as the vehicle speed is lower, based on the vehicle speed information acquired by the information acquisition unit 34. For example, the range setting unit 35 may set the ratio of the second range 110B based on the second range ratio table stored in the storage unit 20 in advance.

  The second range ratio table indicates a relationship between the vehicle speed and the ratio of the second range 110B. In the present embodiment, the ratio of the second range 110B is 0% when the width of the second range 110B of the display image data 110 in the vehicle width direction is 0 mm, and 100% when the width of the second range 110B in the vehicle width direction is 100 mm. . As the second area 110B becomes smaller, the first area 110A expands outward in the vehicle width direction. More specifically, when the ratio of the second range 110B is 0%, the width of the first range 110A in the vehicle width direction is 400 mm. When the ratio of the second range 110B is 100%, the width of the first range 110A in the vehicle width direction is 200 mm.

  An example of the second range ratio table will be described with reference to FIG. In the second range ratio table shown in FIG. 19, a relationship in which the vehicle speed of two patterns of Example 1 and Example 2 and the ratio of the second range 110B linearly change is defined. More specifically, in the pattern of Example 1, when the vehicle speed is between 0 km / h and 60 km / h, the ratio of the second range 110B changes linearly between 0% and 100%, and the vehicle speed is 60 km / h. As described above, the ratio of the second range 110B is constant at 100%. In the pattern of Example 2, when the vehicle speed is between 20 km / h and 80 km / h, the ratio of the second range 110B changes linearly between 0% and 100%. The ratio of the two ranges 110B is constant at 100%.

  In the second range ratio table, the vehicle speed and the ratio of the second range 110B may change stepwise. Alternatively, in the second range ratio table, the vehicle speed and the ratio of the second range 110B may change non-linearly.

  The range setting unit 35 selects, for example, the pattern of Example 1 or the pattern of Example 2 of the second range ratio table shown in FIG. 19 according to the driving situation of the vehicle, the characteristics of the driver, and the like, and sets the vehicle speed of the selected pattern. The first range 110A and the second range 110B are set according to the vehicle speed based on the relationship between the first range 110A and the ratio of the second range 110B.

  The range setting unit 35 may change the change in the ratio of the second range 110B between the time of deceleration and the time of acceleration. For example, the range setting unit 35 selects the pattern of Example 1 of the second range ratio table shown in FIG. 19 during deceleration, and selects the pattern of Example 2 of the second range ratio table shown in FIG. 19 during acceleration. Then, the first range 110A and the second range 110B may be set according to the vehicle speed.

  The flow of processing by the control unit 30 will be described with reference to FIG.

  The control unit 30 causes the video data obtaining unit 32 to obtain the captured video data 100 (Step S21). Step S21 performs the same process as step S11.

  The control unit 30 causes the cutout unit 33 to perform a cutout process (step S22). Step S22 performs the same processing as step S12.

  The control unit 30 causes the range setting unit 35 to set the first range 110A and the second range 110B of the display video data 110 according to the vehicle speed (Step S23). More specifically, the control unit 30 causes the range setting unit 35 to obtain the ratio of the second range 110B corresponding to the vehicle speed based on the second range ratio table and the information obtained by the information obtaining unit 34. Then, the control unit 30 causes the range setting unit 35 to set the second range 110B of the display video data 110 to the ratio of the acquired second range 110B.

  The control unit 30 causes the video processing unit 36 to perform an information amount reduction process of the second range 110B of the display video data 110 (Step S24). Step S24 performs the same process as step S14.

  The control unit 30 causes the display control unit 40 to display the display video data 110 on the rear view monitor 3 (step S25). Step S25 performs the same process as step S15.

  Specifically, when the range setting unit 35 sets the first range 110A and the second range 110B of the display video data 110 according to the vehicle speed, the pattern of Example 1 of the second range ratio table shown in FIG. Will be described.

  For example, when the vehicle speed is 0 km / h, in step S23, the control unit 30 causes the range setting unit 35 to set the ratio of the second range 110B of the display video data 110 to 0%. Then, in step S25, the control unit 30 causes the display control unit 40 to display the display video data 300 as shown in FIG. Accordingly, the display video data 300 including only the first range 300A without displaying the second range is displayed on the rear view monitor 3. In other words, the display video data 300 displayed on the rear view monitor 3 does not have a reduced information amount.

  For example, when the vehicle speed is 40 km / h, in step S23, the control unit 30 causes the range setting unit 35 to set the ratio of the second range 110B of the display video data 110 to 60%. Then, in step S24, the control unit 30 causes the reduction processing unit 37 to perform the information amount reduction processing of the second range 110B whose ratio is set to 60%. Then, in step S25, the control unit 30 causes the display control unit 40 to display the display video data 310 as shown in FIG. As a result, the display video data 310 including the first range 310A wider than the conventional optical rearview mirror R and the second range 310B whose ratio is set to 60% is displayed on the rear view monitor 3.

  For example, when the vehicle speed is 80 km / h, in step S23, the control unit 30 causes the range setting unit 35 to set the ratio of the second range 110B of the display video data 110 to 100%. Then, in step S24, the control unit 30 causes the reduction processing unit 37 to perform the information amount reduction processing of the second range 110B in which the ratio is set to 100%. Then, in step S25, the control unit 30 causes the display control unit 40 to display the display video data 320 as shown in FIG. As a result, the display video data 320 including the first range 320A having the same width as that of the conventional optical rearview mirror R and the second range 320B having a ratio of 100% is displayed on the rear view monitor 3. I have.

  As described above, in the present embodiment, the ratio of the second range 110B of the display video data 110 is changed and set according to the vehicle speed. Then, the display video data 310 or the display video data 320 in which the information amount of the second range 110B in which the ratio is set is reduced is displayed on the rear view monitor 3. In the present embodiment, as the vehicle speed increases, the ratio of the second range 110B increases. When the vehicle speed is 0 km / h, the display video data 300 including only the first range 300A is displayed on the rear view monitor 3. When the vehicle speed is higher than 0 km / h, the display video data 310 or the display video data 320 with a reduced amount of information is displayed on the rear view monitor 3 in the second range 310B or the second range 320B. For this reason, the display video data 300, the display video data 310, or the display video data 320 of the amount of information that the driver can easily recognize is displayed on the rear view monitor 3 according to the vehicle speed. As described above, according to the present embodiment, an appropriate amount of information can be provided to the driver for the driver to recognize and determine according to the vehicle speed. As described above, according to the present embodiment, the amount of information obtained by the driver is suppressed from becoming too large, and thus the burden on the driver can be reduced. According to the present embodiment, the driver can appropriately check around the vehicle.

[Fifth embodiment]
The display system for a vehicle according to the present embodiment will be described with reference to FIGS. FIG. 24 is a diagram illustrating an example of a reduction rate table in the vehicle display system according to the fifth embodiment. FIG. 25 is a flowchart showing the flow of processing in the vehicle display system according to the fifth embodiment. FIG. 26 is a diagram illustrating an example of an image displayed on the rear view monitor of the vehicle display system according to the fifth embodiment. FIG. 27 is a diagram illustrating another example of an image displayed on the rear view monitor of the vehicle display system according to the fifth embodiment. FIG. 28 is a diagram illustrating another example of an image displayed on the rear view monitor of the vehicle display system according to the fifth embodiment.

  The display system for a vehicle according to the present embodiment is different from the display system for a vehicle according to the fourth embodiment in the processing in the control unit 30. Other configurations are the same as those of the vehicle display system of the fourth embodiment.

  When performing the information amount reduction processing of the first embodiment, the reduction processing unit 37 sets a reduction rate of the information amount in the second range 110B of the display video data 110 according to the vehicle speed. Based on the vehicle speed information acquired by the information acquisition unit 34, the reduction processing unit 37 performs an information amount reduction process in which the degree of information amount reduction for the video data in the second range 110B increases as the vehicle speed increases. The reduction processing unit 37 may set the reduction rate of the information amount of the second range 110B based on the reduction rate table stored in the storage unit 20 in advance.

  The reduction rate table shows the relationship between the vehicle speed and the reduction rate of the information amount in the second range 110B. In the present embodiment, the reduction rate of the information amount in the second range 110B is 0% when the information amount is not reduced, and 100% when the information amount is zero and not displayed.

  An example of the reduction rate table will be described with reference to FIG. In the reduction rate table shown in FIG. 24, the relationship in which the vehicle speed of the two patterns of Example 1 and Example 2 and the reduction rate of the information amount in the second range 110B change linearly, and the relationship in which the variation changes stepwise as Example 3 are shown. Etc. are defined. More specifically, in the pattern of Example 1, when the vehicle speed is between 0 km / h and 60 km / h, the reduction rate of the information amount in the second range 110B changes linearly between 0% and 100%, Is 60 km / h or more, the reduction rate of the information amount in the second range 110B is constant at 100%. In the pattern of Example 2, when the vehicle speed is between 20 km / h and 80 km / h, the reduction rate of the information amount in the second range 110B changes linearly between 0% and 100%, and the vehicle speed is 80 km / h. As described above, the reduction rate of the information amount in the second range 110B is constant at 100%. In the pattern of Example 3, when the vehicle speed is between 0 km / h and 30 km / h, the reduction rate of the information amount in the second range 110B is 0%, and when the vehicle speed is between 30 km / h and 80 km / h, When the reduction rate of the information amount in the two ranges 110B is 50% and the vehicle speed is 80 km / h or more, the reduction rate of the information amount in the second range 110B is constant at 100%.

  In the reduction rate table, the vehicle speed and the reduction rate of the information amount in the second range 110B may change stepwise. Alternatively, in the reduction rate table, the vehicle speed and the reduction rate of the information amount in the second range 110B may change non-linearly.

  The reduction processing unit 37 selects, for example, the pattern of Example 1 or the pattern of Example 2 in the reduction rate table shown in FIG. 24 according to the driving situation of the vehicle, the characteristics of the driver, and the like, and determines the vehicle speed and the second speed of the selected pattern. Based on the relationship with the reduction rate of the information amount in the two ranges 110B, the reduction rate of the information amount in the second range 110B is set according to the vehicle speed.

  The reduction processing unit 37 may change the way of changing the information amount reduction rate in the second range 110B between the time of deceleration and the time of acceleration. For example, at the time of deceleration, the reduction processing unit 37 selects the pattern of Example 1 of the reduction rate table shown in FIG. 24, and at the time of acceleration, selects the pattern of Example 2 of the reduction rate table shown in FIG. Accordingly, the reduction rate of the information amount in the second range 110B may be set.

  The reduction processing unit 37 selects, for example, the pattern of Example 1 or the pattern of Example 2 in the reduction rate table shown in FIG. 24 according to the driving situation of the vehicle, the characteristics of the driver, and the like, and determines the vehicle speed and the second speed of the selected pattern. Based on the relationship with the reduction rate of the information amount in the two ranges 110B, the reduction rate of the information amount in the second range 110B is set according to the vehicle speed. Then, the reduction processing unit 37 performs the same processing as the information amount reduction processing of the first embodiment.

  The flow of the process performed by the control unit 30 will be described with reference to FIG. The example of FIG. 25 is a processing example in a case where the vehicle speed and the reduction rate of the information amount of the second range 110B are changed in a stepwise manner at a high speed, a medium speed, and a low speed, as shown in FIG. The same processing is performed even in the case of linearly changing.

  The control unit 30 causes the video data obtaining unit 32 to obtain the captured video data 100 (Step S31). Step S31 performs the same process as step S21.

  The control unit 30 causes the cutout unit 33 to perform a cutout process (step S32). Step S32 performs the same processing as step S22.

  The control unit 30 causes the range setting unit 35 to set the first range 110A and the second range 110B of the display video data 110 according to the vehicle speed (Step S33). Step S33 performs the same process as step S23.

  The control unit 30 causes the video processing unit 36 to determine whether the vehicle speed is high (step S34). In the present embodiment, the high speed is, for example, 80 km / h or more.

  When the video processing unit 36 determines that the vehicle speed is high (Yes in step S34), the control unit 30 proceeds to step S35.

  When the video processing unit 36 determines that the vehicle speed is not high (No in step S34), the control unit 30 proceeds to step S36.

  The control unit 30 causes the reduction processing unit 37 to perform the information amount reduction processing of the second range 110B of the display video data 110 at the time of high speed (step S35). More specifically, the control unit 30 causes the reduction processing unit 37 to set the reduction rate of the information amount in the second range 110B in the case of high speed. Then, the control unit 30 causes the reduction processing unit 37 to reduce the information amount of the second range 110B of the display video data 110 by the set reduction rate.

  The control unit 30 causes the video processing unit 36 to determine whether the vehicle speed is a medium speed (step S36). In the present embodiment, the medium speed is, for example, 30 km / h or more and less than 80 km / h.

  When the video processing unit 36 determines that the vehicle speed is the medium speed (Yes in step S36), the control unit 30 proceeds to step S37.

  When the video processing unit 36 determines that the vehicle speed is not the middle speed (No in Step S36), the control unit 30 proceeds to Step S38.

  The control unit 30 causes the reduction processing unit 37 to perform the information amount reduction processing of the second range 110B of the display video data 110 at the time of the middle speed (step S37). More specifically, the control unit 30 controls the reduction processing unit 37 based on the relationship between the vehicle speed stored in the storage unit 20 and the reduction rate of the amount of information in the second range 110B. Is set to the reduction rate of the information amount in. Then, the control unit 30 causes the reduction processing unit 37 to reduce the information amount of the second range 110B of the display video data 110 by the set reduction rate.

  The control unit 30 causes the reduction processing unit 37 to perform the information amount reduction processing of the second range 110B of the display video data 110 at the time of low speed (step S38). More specifically, the control unit 30 uses the reduction processing unit 37 based on the relationship between the vehicle speed stored in the storage unit 20 and the reduction rate of the amount of information in the second range 110B in the second range 110B at a low speed. A reduction rate of the information amount is set. Then, the control unit 30 causes the reduction processing unit 37 to reduce the information amount of the second range 110B of the display video data 110 by the set reduction rate.

  The control unit 30 causes the display control unit 40 to display the display video data 110 on the rear view monitor 3 (step S39). Step S39 performs the same process as step S25.

  Specifically, when the reduction processing unit 37 sets the reduction rate of the information amount in the second range 110B of the display video data 110 according to the vehicle speed, the pattern of Example 1 of the reduction rate table shown in FIG. 24 is used. Will be described.

  For example, when the vehicle speed is 0 km / h, in step S38, the control unit 30 causes the reduction processing unit 37 to set the reduction rate of the information amount in the second range 110B to 0%. Then, the control unit 30 causes the reduction processing unit 37 to reduce the information amount of the second range 110B by 0% as shown in FIG. In other words, the information amount is not reduced in the second range 110B. Then, in step S39, the control unit 30 causes the display control unit 40 to display the display video data 400 on the rear view monitor 3. In the display video data 400, the information amount is not reduced in both the first range 400A and the second range 400B.

  For example, when the vehicle speed is 40 km / h, in step S37, the reduction processing unit sets the reduction rate of the information amount in the second range 110B to 50%. Then, the control unit 30 causes the reduction processing unit 37 to reduce the information amount of the second range 110B by 50% as shown in FIG. Then, the control unit 30 causes the display control unit 40 to display the display video data 410 on the rear view monitor 3. The display video data 410 includes a first range 410A in which the information amount is not reduced and a second range 410B in which the information amount is reduced by 50%.

  For example, when the vehicle speed is 80 km / h, in step S35, the reduction processing unit 37 sets the reduction rate of the information amount in the second range 110B to 100%. Then, the control unit 30 causes the reduction processing unit 37 to reduce the information amount of the second range 110B by 100% as shown in FIG. Then, the control unit 30 causes the display control unit 40 to display the display video data 420 on the rear view monitor 3. The display video data 420 includes a first range 420A in which the information amount is not reduced, and a second range 420B in which the information amount is reduced by 100% and the information amount is zero and not displayed.

  As described above, in the present embodiment, the reduction rate of the information amount of the second range 110B of the display video data 110 is changed according to the vehicle speed. Then, according to the set reduction rate of the information amount, the information amount reduction processing of the second range 110 </ b> B is performed, and the display video data 400, the display video data 410, or the display video data 420 is displayed on the rear view monitor 3. In the present embodiment, the reduction rate of the information amount is increased as the vehicle speed increases. For this reason, on the rear view monitor 3, the display video data 400, the display video data 410, or the display video data 420 of the amount of information that the driver can easily recognize is displayed. As described above, according to the present embodiment, an appropriate amount of information can be provided to the driver for the driver to recognize and determine according to the vehicle speed. As described above, according to the present embodiment, the amount of information obtained by the driver is suppressed from becoming too large, and thus the burden on the driver can be reduced. According to the present embodiment, the driver can appropriately check around the vehicle.

  The illustrated components of the vehicle display system 1 are functionally conceptual, and need not necessarily be physically configured as illustrated. In other words, the specific form of each device is not limited to the one shown in the figure, and all or a part of each device may be functionally or physically dispersed or integrated in arbitrary units according to the processing load and usage status of each device. You may.

  The configuration of the vehicle display system 1 is realized by, for example, a program loaded into a memory as software. In the above-described embodiment, the description has been given as the function block realized by the cooperation of the hardware or the software. That is, these functional blocks can be realized in various forms by only hardware, only software, or a combination thereof.

  The components described above include those that can be easily assumed by those skilled in the art and those that are substantially the same. Further, the configurations described above can be appropriately combined. Further, various omissions, substitutions, or changes in the configuration can be made without departing from the spirit of the present invention.

REFERENCE SIGNS LIST 1 vehicle display system 10 vehicle display control device 30 control unit 31 display image data generation unit 32 image data acquisition unit 33 cutout unit 34 information acquisition unit 35 range setting unit 36 image processing unit 37 reduction processing unit 40 display control unit 2 Rear camera 3 Rear view monitor (display device)
100 photographed video data 110 display video data 110A first range 110B second range

Claims (8)

A display video data generation unit that acquires captured video data from a rear camera that captures the rear of the vehicle and generates display video data to be displayed on a display device that displays a rear video of the vehicle,
An information acquisition unit that acquires vehicle speed information of the vehicle,
For the display video data, a first range and a second range located on both sides of the first range and located on both sides of the display video data, the vehicle speed information acquired by the information acquisition unit A range setting unit that sets the first range to be wider as the vehicle speed is lower ,
When the vehicle speed information obtained by the information obtaining unit indicates a vehicle speed equal to or higher than a predetermined speed with respect to the video data of the second range in which the range is set by the range setting unit, the amount of information obtained by the driver A video processing unit for performing an information amount reduction process for reducing
A display control unit that causes the display device to display the display video data obtained by performing the information amount reduction processing on the second range. The video processing unit performs the information amount reduction process in which the degree of reduction of the information amount for the video data in the second range increases as the vehicle speed increases, based on the vehicle speed information acquired by the information acquisition unit. 2. The display control device for a vehicle according to claim 1 . The video processing section, as the information amount reduction process for the video data of the second range, the vehicle display control device according to claim 1 or 2 performs processing for reducing the color information or luminance. The video processing unit includes a feature point extraction unit that extracts feature points from video data,
The feature point extraction unit extracts a feature point from the video data of the second range,
The video processing unit, said as the information amount reduction process for the video data in the second range, any one of claims 1-3 for performing a process of displaying the feature point superimposed or replaced in the video data of the second range A display control device for a vehicle according to the paragraph. The video processing unit includes an object recognition unit that performs object recognition from video data,
The object recognition unit recognizes a vehicle from the video data of the second range,
The video processing unit performs a process of displaying an icon indicating a recognized vehicle by superimposing or replacing the video data on the second range as the information amount reduction process on the video data of the second range. The display control device for a vehicle according to any one of claims 4 to 7. A display control device for a vehicle according to any one of claims 1 to 5 ,
A display system for a vehicle, comprising: at least one of the display device having a display width capable of displaying at least the first range and the second range; and the rear camera. Obtaining captured video data from a rear camera that captures the rear of the vehicle, generating display video data to be displayed on a display device that displays a rear video of the vehicle, a display video data generation step,
An information acquisition step of acquiring vehicle speed information of the vehicle,
For the display video data, a first range, and second ranges located on both sides of the first range and located on both sides of the display video data, the vehicle speed information obtained in the information obtaining step A range setting step of setting the first range to be wider as the vehicle speed is lower ,
When the vehicle speed information obtained in the information obtaining step indicates a vehicle speed equal to or higher than a predetermined speed with respect to the video data in the second range in which the range is set in the range setting step, the amount of information obtained by the driver A video processing step of performing an information amount reduction process to reduce
A display control step of displaying, on the display device, the display video data obtained by performing the information amount reduction processing on the second range. Obtaining captured video data from a rear camera that captures the rear of the vehicle, generating display video data to be displayed on a display device that displays a rear video of the vehicle, a display video data generation step,
An information acquisition step of acquiring vehicle speed information of the vehicle,
For the display video data, a first range, and second ranges located on both sides of the first range and located on both sides of the display video data, the vehicle speed information obtained in the information obtaining step A range setting step of setting the first range to be wider as the vehicle speed is lower ,
When the vehicle speed information obtained in the information obtaining step indicates a vehicle speed equal to or higher than a predetermined speed with respect to the video data in the second range in which the range is set in the range setting step, the amount of information obtained by the driver A video processing step of performing an information amount reduction process to reduce
And a display control step of causing the display device to display the display video data that has been subjected to the information amount reduction processing on the second range.