WO2017159510A1 - 駐車支援装置、車載カメラ、車両および駐車支援方法 - Google Patents
駐車支援装置、車載カメラ、車両および駐車支援方法 Download PDFInfo
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- WO2017159510A1 WO2017159510A1 PCT/JP2017/009328 JP2017009328W WO2017159510A1 WO 2017159510 A1 WO2017159510 A1 WO 2017159510A1 JP 2017009328 W JP2017009328 W JP 2017009328W WO 2017159510 A1 WO2017159510 A1 WO 2017159510A1
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- parking
- vehicle
- image
- processor
- target position
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- 238000000034 method Methods 0.000 title claims description 26
- 239000000284 extract Substances 0.000 claims abstract description 13
- 238000003384 imaging method Methods 0.000 claims description 16
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- 238000010586 diagram Methods 0.000 description 8
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- 230000006870 function Effects 0.000 description 6
- 238000003708 edge detection Methods 0.000 description 2
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- 230000000295 complement effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D15/00—Steering not otherwise provided for
- B62D15/02—Steering position indicators ; Steering position determination; Steering aids
- B62D15/027—Parking aids, e.g. instruction means
- B62D15/028—Guided parking by providing commands to the driver, e.g. acoustically or optically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D15/00—Steering not otherwise provided for
- B62D15/02—Steering position indicators ; Steering position determination; Steering aids
- B62D15/027—Parking aids, e.g. instruction means
- B62D15/0275—Parking aids, e.g. instruction means by overlaying a vehicle path based on present steering angle over an image without processing that image
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/93—Sonar systems specially adapted for specific applications for anti-collision purposes
- G01S15/931—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/70—Determining position or orientation of objects or cameras
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/16—Anti-collision systems
- G08G1/168—Driving aids for parking, e.g. acoustic or visual feedback on parking space
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
- B60R2300/80—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement
- B60R2300/806—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the intended use of the viewing arrangement for aiding parking
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/93—Sonar systems specially adapted for specific applications for anti-collision purposes
- G01S15/931—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles
- G01S2015/932—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles for parking operations
- G01S2015/933—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles for parking operations for measuring the dimensions of the parking space when driving past
- G01S2015/935—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles for parking operations for measuring the dimensions of the parking space when driving past for measuring the contour, e.g. a trajectory of measurement points, representing the boundary of the parking space
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30248—Vehicle exterior or interior
- G06T2207/30252—Vehicle exterior; Vicinity of vehicle
- G06T2207/30264—Parking
Definitions
- the present disclosure relates to a parking assistance device that supports parking, an in-vehicle camera, a vehicle, and a parking assistance method.
- Patent Document 1 describes a parking assistance device that displays a target parking frame superimposed on a real image when a vehicle is parked.
- the parking assist device of Patent Document 1 can move the display position of the target parking frame by the operation of a user (for example, a driver of a vehicle) so that parking can be performed at an arbitrary position within the parking range.
- a parking assist device extracts a parking area from a surrounding image of the vehicle imaged by an imaging device provided in the vehicle, and generates an image in which the parking area and a parking target position are superimposed.
- a processor is provided.
- the parking assist device includes a memory that stores history information in which a parking position of the vehicle is associated with the parking area.
- the processor adjusts the position of the parking target position in the image based on the history information.
- the vehicle-mounted camera which concerns on one Embodiment of this indication is a vehicle-mounted camera provided with a parking assistance apparatus.
- the parking assist device includes a processor that extracts a parking area from a surrounding image of the vehicle imaged by an imaging device provided in the vehicle and generates an image in which the parking area and a parking target position are superimposed.
- the parking assist device includes a memory that stores history information in which a parking position of the vehicle is associated with the parking area. The processor adjusts the position of the parking target position in the image based on the history information.
- a vehicle is a vehicle including a parking assistance device.
- the parking assist device includes a processor that extracts a parking area from a surrounding image of the vehicle imaged by an imaging device provided in the vehicle and generates an image in which the parking area and a parking target position are superimposed.
- the parking assist device includes a memory that stores history information in which a parking position of the vehicle is associated with the parking area. The processor adjusts the position of the parking target position in the image based on the history information.
- the parking support method is a parking support method executed by a parking support device including a processor and a memory.
- the processor extracts a parking area from a surrounding image of the vehicle imaged by an imaging device provided in the vehicle.
- the processor generates an image in which the parking area and a parking target position are superimposed.
- the memory stores history information in which a parking position of the vehicle is associated with the parking area.
- the processor adjusts the position of the parking target position in the image based on the history information.
- FIG. 1 is a block diagram illustrating a schematic configuration of a parking support apparatus and a vehicle-mounted camera system including the parking support apparatus according to an embodiment of the present disclosure.
- FIG. 2 is a schematic diagram showing the arrangement of components of the in-vehicle camera system of FIG.
- FIG. 3 is a diagram illustrating a parking example of a vehicle on which the in-vehicle camera system of FIG. 1 is mounted.
- FIG. 4 is a diagram for explaining a parking area and a parking target position.
- FIG. 5 is a diagram for explaining a parking position of the vehicle and history information.
- FIG. 6 is a diagram for explaining statistical processing of history information.
- FIG. 7 is a diagram illustrating an adjusted parking target position.
- FIG. 8 is a flowchart illustrating processing of the imaging apparatus.
- FIG. 9 is a flowchart showing a parking assistance method.
- a parking assistance device 1 and an in-vehicle camera system 10 according to an embodiment of the present disclosure will be described.
- the in-vehicle camera system 10 includes a plurality of imaging devices, a parking assistance device 1, a display device 13, a position information acquisition unit 24, and a sensor unit 27.
- the plurality of imaging devices include a front camera 11a, a rear camera 11b, a left side camera 11c, and a right side camera 11d.
- the parking assist device 1 includes a processor 12 and a memory 30.
- each component of the in-vehicle camera system 10 and each component of the parking assist device 1 can transmit and receive information via a dedicated line or an in-vehicle network 14 such as a CAN (Controller-Area-Network).
- the memory 30 is included in the parking assistance device 1, components other than the processor 12 (for example, the front camera 11a and the like) can also be accessed.
- the front camera 11 a is arranged so as to be able to image a peripheral region in front of the vehicle 15.
- the rear camera 11b is disposed so as to be able to image a peripheral region behind the vehicle 15.
- the left side camera 11c and the right side camera 11d are arranged so that, for example, the left and right door mirrors 16 can vertically image the surrounding areas on the side of the vehicle 15 downward.
- the right side camera 11 d is not shown because it is hidden in the vehicle body of the vehicle 15.
- the left side camera 11 c and the right side camera 11 d are arranged symmetrically on the left and right sides of the vehicle 15.
- the display device 13 is disposed at a position that can be viewed from the driver's seat.
- the front camera 11a, the rear camera 11b, the left side camera 11c, and the right side camera 11d are provided with a lens having a wide angle of view such as a fisheye lens, for example, and can capture a peripheral region of the vehicle 15 at a wide angle.
- a lens having a wide angle of view such as a fisheye lens, for example, and can capture a peripheral region of the vehicle 15 at a wide angle.
- a wide angle shooting a wide range of subjects can be imaged, and the subjects in the periphery of the image are curved and imaged. Is done.
- the front camera 11a includes an optical system 17a, an image sensor 18a, a signal processing unit 19a, and a camera control unit 20a.
- the optical system 17a includes a diaphragm and a lens, and forms a subject image.
- the optical system 17a has a wide angle of view, and can form a subject image included in the peripheral region of the vehicle 15 as described above.
- the image sensor 18a is, for example, a CMOS (Complementary Metal Oxide Semiconductor) image sensor, and captures a subject image formed by the optical system 17a. In addition, the image sensor 18a outputs a captured image generated by imaging to the signal processing unit 19a as an image signal.
- CMOS Complementary Metal Oxide Semiconductor
- the signal processing unit 19a performs luminance signal processing (for example, brightness correction, gamma correction) and color signal processing (for example, color interpolation, color correction, white balance, etc.) on the image signal acquired from the image sensor 18a. .
- the signal processing unit 19a may further perform noise removal.
- the signal processing unit 19a outputs the image data subjected to these image processes to the parking assistance device 1.
- the camera control unit 20a controls the operation of each part of the front camera 11a.
- the camera control unit 20a controls the operations of the image sensor 18a and the signal processing unit 19a to periodically output an image signal at, for example, 30 fps.
- the rear camera 11b, the left side camera 11c, and the right side camera 11d have optical systems 17b, 17c, and 17d, respectively, similar to the front camera 11a. Further, the rear camera 11b, the left side camera 11c, and the right side camera 11d include image sensors 18b, 18c, and 18d, respectively. The rear camera 11b, the left side camera 11c, and the right side camera 11d include signal processing units 19b, 19c, and 19d, respectively. The rear camera 11b, the left side camera 11c, and the right side camera 11d include camera control units 20b, 20c, and 20d, respectively.
- the functions and configurations of the optical systems 17b, 17c, and 17d, the image sensors 18b, 18c, and 18d, the signal processing units 19b, 19c, and 19d, and the camera control units 20b, 20c, and 20d are similar to those of the front camera 11a.
- the in-vehicle camera system 10 does not have to include some imaging devices.
- the in-vehicle camera system 10 may be configured without the front camera 11a.
- the processor 12 of the parking assistance device 1 includes an image acquisition unit 21, a parking area detection unit 22, a calculation unit 23, a vehicle position detection unit 25, and an image processing unit 26. Further, in the present embodiment, the processor 12 is a CPU (Central Processing Unit) that realizes a specific function by reading a specific program.
- the processor 12 can be composed of a single CPU or a plurality of CPUs.
- the memory 30 of the parking assistance apparatus 1 stores various data used in calculations and processes executed by the processor 12.
- the memory 30 stores a program for the processor 12 to function as the image acquisition unit 21, the parking area detection unit 22, the calculation unit 23, the vehicle position detection unit 25, and the image processing unit 26.
- the memory 30 stores a plurality of history information described later.
- the image acquisition unit 21 acquires image data of peripheral areas in the respective directions from the front camera 11a, the rear camera 11b, the left side camera 11c, and the right side camera 11d via the in-vehicle network 14.
- the image acquisition unit 21 may acquire all or part of the image data of the front, rear, and side (right and left) peripheral regions.
- the image acquisition unit 21 may acquire all the image data and temporarily store it in the memory 30, and then extract only the necessary area (designate the area).
- the image acquisition unit 21 stores an image in the memory 30 that is an image before the vehicle 15 stops in the parking area and can be used for calculation of a deviation rate described later.
- all or part of the images of the front, rear, and side peripheral regions acquired by the image acquisition unit 21 correspond to the peripheral images of the present disclosure.
- the parking area detection unit 22 detects a parking area (an area where the vehicle 15 can be parked). For example, when the vehicle 15 stops at a parking lot in a city, the parking area detection unit 22 can detect the parking area by performing white line detection. Moreover, when the vehicle 15 stops at a garage at home, for example, the parking area can be detected by detecting the side wall and the back wall.
- the parking area is an area where the vehicle 15 can stop.
- a parking target position is set inside the parking area. Information on the parking area detected by the parking area detection unit 22 is stored in the memory 30, and is used, for example, when the image processing unit 26 generates an image in which the parking area and the parking target position are superimposed.
- the calculating unit 23 calculates the deviation rate and stores it in the memory 30 as history information including past data.
- the deviation rate is a value indicating how much the position where the vehicle 15 is actually parked is biased with respect to the center of the parking area.
- the calculation unit 23 calculates the deviation rate in the left and right direction of the vehicle 15.
- the calculation unit 23 performs a statistical calculation process on the deviation rate. By statistically calculating the deviation rate including the past, the driver's preference for parking position and customs can be understood. In the statistical calculation, for example, an average value may be obtained, a mode value may be obtained as in the present embodiment, or an average value and a mode value may be switched according to the number of parameters. Moreover, the calculating part 23 may reflect a recent tendency by selecting the most recent predetermined number (for example, 10) deviation rate as a parameter. The calculation unit 23 stores the history information in the memory 30 and outputs the result of statistical processing to the image processing unit 26.
- the image processing unit 26 generates an image in which the parking target position is superimposed on an image from the rear camera 11b including the parking area acquired by the image acquisition unit 21, for example.
- the image processing unit 26 displays the generated image on the display device 13.
- the image processing unit 26 also displays a parking guide line, which will be described later, in a superimposed manner. Furthermore, the image processing unit 26 may execute processing that makes the parking area stand out. Then, the image processing unit 26 adjusts the display position of the parking target position when the absolute value of the difference between the mode value of the deviation rate acquired from the calculation unit 23 and the current set value exceeds the threshold value. An image is generated and displayed on the display device 13.
- the image processing unit 26 acquires information related to the seating (information on the passenger of the vehicle 15) and adjusts the position of the parking target position in the generated image. For example, when many people are on the passenger seat side, the parking target position may be displayed by shifting the parking position on the driver seat side so that the passenger can easily get on and off.
- the vehicle position detection unit 25 acquires the position information of the vehicle 15 and outputs it to the calculation unit 23.
- the vehicle position detection unit 25 acquires position detection data based on GPS (Global Positioning System) from the position information acquisition unit 24 and grasps the position of the vehicle 15.
- GPS Global Positioning System
- the position information enables the calculation unit 23 to select an appropriate piece of history information stored in the memory 30.
- the parking assistance apparatus 1 can appropriately reflect the driver's preference that differs depending on the parking location by using a plurality of history information for each parking location. For example, if the driver prefers to park to the right in a garage at home and prefers to park in the center in a city parking lot, the parking assistance device 1 displays a parking target position suitable for each location. it can.
- the display device 13 includes an LCD (Liquid Crystal Display), for example, and can display a real-time moving image.
- the display device 13 displays an image in which at least the parking target position is superimposed and displayed via the in-vehicle network 14.
- the position information acquisition unit 24 is a device for acquiring GPS position information from the outside of the vehicle 15.
- the position information acquisition unit 24 may be a GPS antenna and a GPS receiver.
- a part of a car navigation system mounted on the vehicle 15 may function as the position information acquisition unit 24.
- the sensor unit 27 includes a pressure sensor 28 that detects the pressure of the seat and the backrest portion, a rotation sensor that is in a seat belt retractor and can detect a belt pull-out state. And the sensor part 27 outputs the information regarding seating to the processor 12 via the vehicle-mounted network 14.
- the vehicle 15 parks in a central area among the three parking areas PS.
- the center line CL is a virtual line in which the left and right widths of the parking area PS are equal.
- the obstacle B exists in the boundary part with the parking area PS on the left side of the page.
- the displayed parking target position is always the same, or even if it can be adjusted, manual operation by the driver is required.
- the parking assistance device 1 can display a driving assistance guide that reflects the preference and customs of the parking position without complicated operation by the driver.
- the image in the initial state includes a parking area PS and an obstacle B that are captured images captured by the rear camera 11b.
- the parking area PS is surrounded by a white line.
- the parking assistance apparatus 1 recognizes the parking area PS by a process of detecting a white line.
- the parking target position Ti is an image indicating the parking position of the vehicle 15 that is targeted by the driver.
- the parking guide line A0 is an image showing a predicted traveling locus of the vehicle 15, and changes according to the steering angle of the vehicle 15.
- the parking target position Ti and the parking guide line A0 are displayed superimposed on the captured image in order to support the driving operation of the vehicle 15.
- the driver can park in the center of the parking area PS by operating the vehicle 15 so that the parking guide line A0 overlaps the parking target position Ti.
- the center line CL of the parking area PS is a virtual line for explanation.
- the parking assistance apparatus 1 may superimpose and display the center line CL.
- the parking target position Ti displayed by the parking assist device 1 in the initial state is symmetrical with respect to the center line CL.
- the parking guide line A0 in FIG. 4 the driver tends to park the vehicle 15 on the right side of the drawing with respect to the parking target position Ti so as to avoid the obstacle B. Therefore, the parking target position Ti displayed by the parking assist device 1 in the initial state does not reflect the preference and custom of the driver's parking position.
- the parking assistance device 1 stores an image including the parking area PS and the parking guide line A0 in the memory 30 when the vehicle 15 is parked.
- the calculating part 23 acquires an image from the memory 30, calculates
- the deviation rate R is expressed by the following formula (1).
- the right distance DR is a distance between the vehicle 15 and the right boundary (left side of the drawing) of the parking area PS with reference to the forward direction of the vehicle 15.
- the left interval DL is a distance between the vehicle 15 and the left boundary (right side in the drawing) of the parking area PS with reference to the forward direction of the vehicle 15.
- the deviation rate R is greater than 1 when the vehicle 15 is parked to the left (rightward on the page) with respect to the forward direction. On the contrary, the deviation rate R is smaller than 1 when the vehicle 15 is parked to the right (left side in the drawing) with the forward direction as a reference.
- the parking assistance apparatus 1 not only acquires the right interval DR and the left interval DL, but also determines the deviation of the parking position based on the deviation rate R that is the ratio thereof. Therefore, regardless of the size of the parking area PS, the deviation of the parking position is determined based on the same standard as the deviation rate R.
- the image acquired from the memory 30 by the calculation unit 23 to calculate the deviation rate R is an image when there is no change in the steering angle immediately before the vehicle 15 stops in this embodiment.
- the image is not particularly limited as long as the image can acquire the DR and the left interval DL.
- interval DL is set to the rearmost part vicinity of the vehicle 15 of the parking guide line A0 in this embodiment, it is not specifically limited.
- FIG. 5 shows a plurality of parking guide lines A1 to A4 of the vehicle 15 in an overlapping manner. That is, FIG. 5 collectively shows parking guide lines A1 to A4 indicating the respective parking positions after the vehicle 15 is parked a plurality of times.
- the driver illustrated in the present embodiment tends to park so that the center of the vehicle is located on the right side of the paper with respect to the center line CL of the parking area PS.
- the calculation unit 23 calculates the deviation rate R in each of the multiple parking of the vehicle 15. For example, the deviation rate R is calculated as “1.2”, “1.3”, “1.1”, “1.2”.
- the parking position of the vehicle 15 is related to the parking area PS by the deviation rate R.
- the calculation unit 23 stores the calculated deviation rate R in the memory 30 as history information. That is, the history information is a list of deviation rates R that are information on past parking positions. At this time, each deviation rate R may be stored in a table format associated with the time information.
- a plurality of pieces of history information according to a predetermined category (that is, by condition) are used.
- the predetermined section is position information of the vehicle 15, and history information is prepared for each parking place. Therefore, the parking assistance apparatus 1 can reflect a driver
- the calculation unit 23 acquires the position information of the vehicle 15 from the vehicle position detection unit 25, and selects history information about the parking area PS from the plurality of history information.
- the calculation unit 23 performs a statistical calculation process on the deviation rate R of a plurality of parking of the vehicle 15 to grasp the driver's preference for parking position and customs.
- the calculation unit 23 obtains the mode value of the deviation rate R.
- FIG. 6 shows an example of the result of statistical processing of history information executed by the calculation unit 23.
- the mode value of the deviation rate R is 1.2. That is, the driver tends to park with a bias toward the left (to the right of the page) with respect to the forward direction of the vehicle 15.
- the result of the statistical processing of the calculation unit 23 is output to the image processing unit 26.
- the image processing unit 26 adjusts the display position of the parking target position Ti to adjust the image. Is generated and displayed on the display device 13.
- the mode value of the deviation rate R acquired from the calculation unit 23 is 1.2.
- the current set value is a deviation rate R of the center of the current parking target position Ti, which is 1. Further, it is assumed that the threshold is set to 0.1. At this time, since the absolute value (0.2) of the difference between the mode value of the deviation rate R acquired from the calculation unit 23 and the current set value exceeds the threshold value (0.1), the image processing unit 26 exceeds the threshold (0.1). The display position of the position Ti is adjusted. FIG.
- FIG. 7 is a diagram showing the adjusted parking target position Ta, and it can be seen that the parking target position Ta is shifted to the right in the drawing according to the driver's preference for parking position and customs. Specifically, the image processing unit 26 adjusts so that the deviation rate R of the center of the parking target position Ta is 1.2. After this adjustment, the image processing unit 26 displays the parking target position Ta instead of the parking target position Ti and performs parking support. Therefore, the driver can park at a desired position by operating the vehicle 15 so that the parking guide line overlaps the parking target position Ta.
- the image processing unit 26 may receive information related to sitting from the sensor unit 27. Based on this information, the image processing unit 26 can further adjust the parking target position Ta so as to be more convenient for the passengers P1, P2, and P3.
- the image processing unit 26 grasps that the “sitting position” of the passengers P1, P2, and P3 is the driver's seat side (see FIG. 3).
- the image processing unit 26 may further shift the parking target position Ta to the right side of the page so that a sufficient boarding / alighting space is provided.
- the image processing unit 26 may adjust the deviation rate R at the center of the parking target position Ta to be 1.25.
- the driver can park the vehicle 15 at an appropriate position in consideration of getting on and off of the passengers P1, P2, and P3 by operating the vehicle 15 so that the parking guide line overlaps the parking target position Ta.
- FIG. 8 The processing executed in the above embodiment will be described below with reference to FIGS. First, the flowchart of FIG. 8 is shown about the process which signal processing part 19a, 19b, 19c, 19d of the imaging device (front camera 11a, rear camera 11b, left side camera 11c, right side camera 11d) with which the vehicle 15 was equipped performs. It explains using. And the parking assistance method which the parking assistance apparatus 1 performs is demonstrated using the flowchart of FIG.
- the signal processing units 19a, 19b, 19c, and 19d acquire image signals from the image sensors 18a, 18b, 18c, and 18d, respectively (step S1).
- the signal processing units 19a, 19b, 19c, and 19d perform luminance signal processing (eg, brightness correction, gamma correction, etc.) and color signal processing (eg, color interpolation, color correction, white balance, etc.) on the acquired image signal. Execute (Step S2).
- luminance signal processing eg, brightness correction, gamma correction, etc.
- color signal processing eg, color interpolation, color correction, white balance, etc.
- the signal processing units 19a, 19b, 19c, and 19d output the image data after the signal processing to the image acquisition unit 21 (step S3).
- the processing of steps S1, S2, and S3 is executed by the signal processing units 19a, 19b, 19c, and 19d in accordance with control signals from the camera control units 20a, 20b, 20c, and 20d.
- the image acquisition unit 21 acquires image data (step S10).
- the image acquisition unit 21 acquires all of the image data of the front, rear, and side (right and left) peripheral regions.
- the image acquisition unit 21 designates a necessary image data area (step S11).
- the image acquisition unit 21 temporarily stores all the image data in the memory 30, and then extracts the image of the rear camera 11b.
- the parking area detection part 22 performs a binarization process (step S12).
- the image of the rear camera 11b is binarized (represented by two gradations of white and black) in order to easily detect the white line.
- the parking area detection unit 22 performs labeling feature extraction (step S13). That is, the parking area detection part 22 extracts a white area
- step S15 When the parking area detection unit 22 detects the white line, the process proceeds to step S15 (Yes in step S14). When the white line cannot be detected and the parking area PS cannot be specified (No in step S14), the process returns to step S10. That is, the image acquisition unit 21 acquires image data again. At this time, the parking area detection unit 22 may cause the camera control units 20a, 20b, 20c, and 20d, for example, to perform adjustment of luminance signal processing or the like via the in-vehicle network 14.
- the calculating unit 23 calculates the deviation rate R for the current parking of the vehicle 15 (step S15). And the calculating part 23 acquires the positional infomation on the vehicle 15 from the vehicle position detection part 25, and selects the historical information about the parking area PS which is object from several historical information.
- the calculation unit 23 acquires a deviation rate R for the past parking of the vehicle 15 from the history information, and executes statistical processing (step S16). In the present embodiment, the calculation unit 23 obtains the mode value of the deviation rate R. In addition, after executing the statistical processing, the calculation unit 23 adds the deviation rate R with respect to the current parking of the vehicle 15 to the history information about the parking area PS and stores it in the memory 30. That is, the calculation unit 23 updates the history information. Then, the calculation unit 23 outputs the mode value of the deviation rate R to the image processing unit 26.
- the image processing unit 26 adjusts the parking target position ( From step S18), the series of processing ends. That is, when there is a certain difference between the parking target position based on the current set value and the parking position according to the driver's preference and habit, the image processing unit 26 adjusts the parking target position.
- the image processing unit 26 adjusts the parking target position. The series of processing ends.
- the image processing unit 26 may further adjust the display position according to the information related to the seating from the sensor unit 27.
- the parking assistance device 1 reflects the preference and customs of the parking position without complicated operation by the user by adjusting the parking target position based on the statistical processing result of the history information.
- the parking target position can be displayed.
- the parking area detection unit 22 performs white line detection, but the parking area may be specified by performing edge detection instead of white line detection.
- the processing for detecting the side wall and the back wall by performing edge detection using, for example, a Sobel filter or a Previtt filter is performed in steps S12, S13 and S14 in FIG. It may replace with and may be performed.
- a plurality of history information is used according to the position information of the vehicle 15, but a plurality of history information according to other predetermined sections may be used.
- the predetermined division may be a division based on a parking type such as parallel parking and parallel parking.
- the parking type can be determined based on the positional relationship between the vehicle 15 and the parking area.
- different history information is used when the parking area is located obliquely behind the vehicle 15 for parallel parking and when the parking area is located behind the vehicle as in the above embodiment.
- the parking assistance device 1 that can further reflect the driver's preference is realized.
- different history information may be used for each number of passengers (for example, whether the number of passengers is one or two).
- different history information may be used for each seating position of a passenger other than the driver (for example, whether it is a passenger seat or a rear seat on the driver's seat side).
- the history information varies depending on the size of the parking area (for example, the left and right widths are divided into 250 to 269 [cm], 270 to 289 [cm], 290 to 309 [cm], 310 [cm] or more). May be used.
- one piece of history information may be used regardless of the position information of the vehicle 15 or the like.
- the parking assistance apparatus 1 can reflect the driver's preference and tendency (for example, a tendency to move to the right side from the center) regardless of the location.
- the calculation unit 23 calculates the deviation rate in the left-right direction of the vehicle 15, but may further calculate the deviation rate in the front-rear direction of the vehicle 15, or in the direction of the front-rear direction of the vehicle 15. Only the deviation rate may be calculated.
- the calculation unit 23 obtains the distance (DR in FIG. 5) from the rear boundary of the parking area during parking, stores it in the memory 30 as history information, and performs statistical calculation processing. May be performed. At this time, the parking assistance device 1 that can further reflect the driver's preference is realized.
- the processor 12 of the parking assistance apparatus 1 and the signal processing parts 19a, 19b, 19c, and 19d of an imaging device perform a different process, both are integrated, FIG.8 and FIG.9. All the described processes may be performed.
- the signal processing units 19a, 19b, 19c, and 19d may execute the processing of the processor 12 of the parking assistance device 1.
- the imaging device vehicle camera
- the parking assist device 1 may include the parking assist device 1.
- the image processing unit 26 further adjusts the parking target position Ta when receiving information related to sitting from the sensor unit 27.
- the image processing unit 26 may have a function of further adjusting the parking target position Ta when it is detected that there are other vehicles on the left and right of the parking area.
- the image acquisition unit 21 extracts the image data of the peripheral region on the side (right side and left side).
- the parking area detection unit 22 detects whether there is a vehicle on the side, and outputs a detection result to the image processing unit 26.
- the image processing unit 26 adjusts the parking target position Ta to be further shifted to the opposite side (left side).
- the parking assistance apparatus 1 can perform parking assistance that makes it easier for the passenger to get on and off.
- the parking assistance device 1 includes the memory 30, but a storage device such as a hard disk drive may be used.
- the memory 30 includes a volatile memory and a nonvolatile memory, but may include only one of these (for example, a volatile memory).
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Abstract
Description
本開示の一実施形態に係る駐車支援装置1および車載カメラシステム10について説明する。
以下では、表示装置13に表示される、撮像画像に駐車目標位置および駐車ガイド線を重畳した画像の例を示す。その後に、駐車支援装置1の処理(駐車支援方法)について説明する。図3に示されるように、駐車支援装置1を備える車載カメラシステム10を搭載した車両15が、所定の駐車領域PSに後方から進入して駐車する例を適宜用いて説明する。
以下に上記の実施形態で実行される処理について図8および図9を参照して説明する。まず、車両15に備えられた撮像装置(フロントカメラ11a、リアカメラ11b、左サイドカメラ11c、右サイドカメラ11d)の信号処理部19a,19b,19c,19dが実行する処理について図8のフローチャートを用いて説明する。そして、駐車支援装置1が実行する駐車支援方法について図9のフローチャートを用いて説明する。
10 車載カメラシステム
11a フロントカメラ
11b リアカメラ
11c 左サイドカメラ
11d 右サイドカメラ
12 プロセッサ
13 表示装置
14 車載ネットワーク
15 車両
16 ドアミラー
17a,17b,17c,17d 光学系
18a,18b,18c,18d 撮像素子
19a,19b,19c,19d 信号処理部
20a,20b,20c,20d カメラ制御部
21 画像取得部
22 駐車領域検出部
23 演算部
24 位置情報取得部
25 車両位置検出部
26 画像処理部
27 センサ部
28 圧力センサ
29 回転センサ
30 メモリ
A0,A1,A2,A3,A4 駐車ガイド線
B 障害物
CL センターライン
D ドア
DL 左方間隔
DR 右方間隔
P1,P2,P3 搭乗者
PS 駐車領域
R ズレ率
Ta,Ti 駐車目標位置
Claims (9)
- 車両に備えられた撮像装置で撮像された前記車両の周辺画像から駐車領域を抽出し、前記駐車領域と駐車目標位置とが重畳した画像を生成するプロセッサと、
前記車両の駐車位置を前記駐車領域と関連付けた履歴情報を記憶するメモリと、を備え、
前記プロセッサは、
前記履歴情報に基づいて前記駐車目標位置の前記画像における位置を調整する駐車支援装置。 - 前記メモリは、所定の区分による複数の前記履歴情報を記憶する、請求項1に記載の駐車支援装置。
- 前記所定の区分は、前記車両の位置に基づく区分である、請求項2に記載の駐車支援装置。
- 前記所定の区分は、駐車種別に基づく区分である、請求項2に記載の駐車支援装置。
- 前記プロセッサは、
更に前記車両の搭乗者に関する情報に基づいて前記駐車目標位置の前記画像における位置を調整する請求項1から4のいずれか一項に記載の駐車支援装置。 - 前記車両の搭乗者に関する情報は、前記車両の搭乗者の着座席の位置である、請求項5に記載の駐車支援装置。
- 駐車支援装置を備える車載カメラであって、
前記駐車支援装置は、
車両に備えられた撮像装置で撮像された前記車両の周辺画像から駐車領域を抽出し、前記駐車領域と駐車目標位置とが重畳した画像を生成するプロセッサと、
前記車両の駐車位置を前記駐車領域と関連付けた履歴情報を記憶するメモリと、を備え、
前記プロセッサは、
前記履歴情報に基づいて前記駐車目標位置の前記画像における位置を調整する、車載カメラ。 - 駐車支援装置を備える車両であって、
前記駐車支援装置は、
前記車両に備えられた撮像装置で撮像された前記車両の周辺画像から駐車領域を抽出し、前記駐車領域と駐車目標位置とが重畳した画像を生成するプロセッサと、
前記車両の駐車位置を前記駐車領域と関連付けた履歴情報を記憶するメモリと、を備え、
前記プロセッサは、
前記履歴情報に基づいて前記駐車目標位置の前記画像における位置を調整する、車両。 - プロセッサとメモリとを備える駐車支援装置が実行する駐車支援方法であって、
前記プロセッサが、車両に備えられた撮像装置で撮像された前記車両の周辺画像から駐車領域を抽出し、
前記プロセッサが、前記駐車領域と駐車目標位置とが重畳した画像を生成し、
前記メモリが、前記車両の駐車位置を前記駐車領域と関連付けた履歴情報を記憶し、
前記プロセッサが、前記履歴情報に基づいて前記駐車目標位置の前記画像における位置を調整する、駐車支援方法。
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JP2018505863A JP6717929B2 (ja) | 2016-03-18 | 2017-03-08 | 駐車支援装置、車載カメラ、車両および駐車支援方法 |
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