JP2005134489A - Map stereoscopic display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a map stereoscopic display device enabling a user to have easy visual recognition of a destination by generating and stereoscopically displaying the image data of the destination and the image data around the destination as different types of image data so that the destination is emphasized. <P>SOLUTION: The map stereoscopic display device 100 comprises an image generating section 112 which obtains prescribed map/image information from inputted or obtained destination and the present position and processes the map/image information, and a display section 114 which stereoscopically displays the image data generated by the image generating section 112. The image generating section 112 is provided with an emphasis processing section 116, and the emphasis processing section generates different types of image data in order to emphatically display the image information of the destination with respect to the other image information around the destination. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a map stereoscopic display device to which stereoscopic display technology is applied in a map display device such as an in-vehicle navigation device, and in particular, in order to highlight a building or the like at a destination, the gradation level thereof is set around the destination. The present invention relates to a map three-dimensional display device that allows a user to easily display an image of a destination building or the like by displaying the building in a three-dimensional manner different from the gradation level of the building.

  With the development of communication and information processing systems in recent years, navigation systems using GPS (Global Positioning System) positioning systems have become widespread, and in-vehicle navigation devices (hereinafter abbreviated as car navigation devices) mounted on automobiles are used by many users. Has been.

  In general, such a car navigation apparatus holds map information, building information, and image information thereof in a storage device such as a CD-ROM, and measures the current position of a driving car using GPS, thereby driving the driver. When the destination that is about to reach is input, the map information including the current position and destination is read from the storage device, the current position is corrected on the map (on the road) by map matching, and the destination can be reached in the shortest time The route is searched, the map information, the searched route information, the image around the route, the image information of the buildings around the destination, etc. are developed in the drawing memory, and this is displayed on the display unit to navigate the driver. .

  Recently, in order to satisfy the convenience of the user, the route is guided by voice or the image of a building, a sign, or a road is displayed as a three-dimensional (virtual three-dimensional image) using polygons among images displayed on the display unit. There is also provided a car navigation device that is displayed on the screen for easy viewing.

  For example, a car navigation device disclosed in Patent Document 1 below displays one or more types of virtual three-dimensional images around a three-dimensional road drawing according to an actual road network, as shown in FIG. In addition, images and sounds such as day and night feelings, feelings of the four seasons, weather, and sound effects are added. The car navigation device includes an information storage medium reading unit that reads map information stored in an information storage medium, an image display unit that displays the map information, a current position detection unit that detects a current position of the moving body, and a moving body. The moving direction detecting means for detecting the moving direction of the moving object, the speed detecting means for detecting the speed of the moving body, and the image information storage unit storing the three-dimensional virtual landscape image.

  Then, according to the moving information of the moving body obtained from the current position detecting means, the traveling direction detecting means, and the speed detecting means, the road network information corresponding to the position of the moving body from the map information, and the three-dimensional virtual landscape image from the image information storage unit. , The road is drawn based on the road network information, the virtual landscape image around the road is drawn and displayed three-dimensionally, and the moving speed of the three-dimensional virtual landscape image is obtained from the speed detection means. Variable display by linking to.

  In addition, the car navigation device disclosed in Patent Document 2 is designed to enhance visibility by giving perspective to a route guide line when a building, a road, or the like is displayed three-dimensionally. As shown in FIG. 5, the car navigation device displays a route guide line 28 on the road 26 in a three-dimensional manner when displaying a three-dimensional map. Further, when the route guide line 28 is in a positional relationship hidden by the building 30 (see (b)), the overlapping portion of the route guide line 28 is displayed in a different color from the non-overlapping portion (see (a)). In particular, when the display color of the route guide line 28 and the display color of the building 30 are drawn on a VRAM (video RAM) in a semi-transparent manner in which the display color is alternately set in pixel units, the relative relationship between the route guide line 28 and the building 30 is obtained. Therefore, attention is paid to improving the visibility of the route guide line 28 by clarifying the positional relationship.

  As shown in FIG. 6, the car navigation apparatus 11 disclosed in Patent Document 2 includes a position detection unit 12, a map data storage unit 13, a switch information input unit 14, a memory unit 15, a display unit 16, a voice output unit 17, a traffic An information receiving unit 18 and a control unit 19 are provided. The control unit 19 includes a map data acquisition unit 20, a map matching unit 21, a route calculation unit 22, a route guide unit 23, a drawing unit 24, a screen control management unit 25, and a video (not shown). It is composed of RAM (hereinafter referred to as VRAM).

  The control unit 19 is mainly composed of a microcomputer, and automatically selects an optimal route from the current position to the destination in accordance with an operation on the switch information input unit 14 and displays a route guide line. A guidance function is executed, map matching processing, guidance voice synthesis, map drawing, and the like are performed. The map matching unit 21 uses the vehicle position information detected by the position detection unit 12 and the road shape data of the map data acquired from the map data storage unit 13 to determine on which road the current position of the vehicle exists. Identify. At this time, the map data acquisition unit 20 acquires necessary map data from the map data storage unit 13. In addition, the user operates the switch information input unit 14 to display a desired map and sets the destination. The route calculation unit 22 calculates the current route information calculated by the map matching unit 21 and the optimum route from the starting point specified by the user and the destination.

  The route guidance unit 23 calculates points necessary for route guidance from the result of the above route calculation and road shape data stored in the map data, intersection position information, crossing position information, etc. To calculate the route guidance (whether to turn right or left). The drawing unit 24 draws a map of the current position, a schematic diagram of the expressway, an enlarged view of the vicinity of the intersection in the vicinity of the intersection, and the like in accordance with instructions from the screen control management unit 25 and displays them on the display unit 16. The map data acquisition unit 20 acquires the map data necessary for each processing unit from the map data storage unit 13 and provides it to each processing unit. Moreover, each process mentioned above is performed using ROM and RAM of the memory part 15. FIG.

The map drawn by the drawing unit 24 is a three-dimensional map (hereinafter referred to as a three-dimensional map), and the building is drawn three-dimensionally from the shape data and height information of the building stored in the map data. . In addition, a three-dimensional intersection is also drawn three-dimensionally based on road shape data. Based on the information calculated by the route guidance unit 23, when the vehicle travels and reaches a position to be route guidance, a desired image is drawn on the drawing unit 24, or a predetermined voice is uttered on the voice output unit 17 for use. Guide the person to the destination.
JP-A-9-62179 (FIGS. 1 and 7) Japanese Patent Laid-Open No. 2001-27535 (FIGS. 1 and 5)

  In general, in a car navigation system, the driver cannot stare at the map (display screen) while driving, but can instantly see the screen or else stop the car temporarily at a safe place to the destination After that, the vehicle travels based on the memory, and the screen is used as a means of instantaneously observing as an auxiliary. When the three-dimensional display is performed as in Patent Documents 1 and 2, the positional relationship between the current position and the neighboring situation is easy to visually recognize, but the image of the building or the like displayed on the display screen is uniformly displayed in three dimensions. However, there is a problem that it is difficult to identify an image of a destination building or the like by instantaneous screen observation. To solve this problem, display methods such as marking the destination with an asterisk or exclamation mark can be considered. However, there is a risk that a structure that is another landmark, such as a nearby building, may be hidden by that mark. It is not preferable.

  The inventor of the present application has conducted various studies to solve the above problems, and as a result, among the image data to be displayed, when displaying images such as maps, roads, buildings, and signs, It is found that if the image of the other part is displayed so as to be emphasized differently, the display image of the building at the destination can be easily distinguished from the display image of the other part for easy viewing. The invention has been completed.

  That is, the present invention aims to solve the above-mentioned problems, and is a map stereoscopic display device in which a stereoscopic display technology is applied to a map display device, wherein the destination image data is at least converted to image data around the destination. An object of the present invention is to provide a map stereoscopic display device that is generated as image data different from an original image so as to be emphasized and stereoscopically displayed so that a user can easily visually recognize a destination image. It is what.

In order to solve the above problems, the present invention includes an image generation unit that acquires predetermined map / image information from an input or acquired destination and a current position and processes the map / image information, and an image generation unit. In a map stereoscopic display device including a display unit that stereoscopically displays generated image data,
The image generation unit includes an enhancement processing unit, and the enhancement processing unit discriminates the image information of the destination and other peripheral image information, and enhances the image information of the destination with respect to the other image information. It is characterized in that it is generated as displayed image data and synthesized with map data.

  Further, the present invention includes an input operation unit and a map / image DB storing map / image information in such a display device, and the image generation unit generates stereoscopic display data from planar data or acquires an acquired map. / Stereoscopic display data is generated from the height information of the image information, or preferably, the stereoscopic display data of the image generation unit is a stereoscopic display data of the Barrax method, and the display unit has a Barralux barrier that can be switched on / off. doing.

  More preferably, in such a map stereoscopic display device, the emphasis processing unit makes the image data different from the gradation level of the image information of the destination and the gradation level of the image information other than the destination, or Whether the gradation level of the image information is made higher than the standard gradation level, the gradation level of the image information other than the destination is made smaller than the standard gradation level, or the destination image information One or two or more combination processes are performed to convert the color code darkly or to convert the color code of image information other than the destination lightly.

  Other features will become more apparent in the best mode for carrying out the invention described below.

  In the invention, the emphasis processing unit of the image generation unit discriminates the destination image information from the other image information by distinguishing the destination image information from the other image information and highlighting the destination image information. Since the image data is generated and combined with the map data, the user can view the image of the destination building or the like easily and almost instantaneously by looking at the display screen.

  In addition, the configuration of the stereoscopic display is simple and easy, and the emphasis processing unit of the image generation unit can be processed at high speed, so that the display does not feel strange.

  Hereinafter, specific examples of the present invention will be described in detail with reference to examples and drawings. FIG. 1 is a block diagram showing a configuration of a map stereoscopic display device according to an embodiment of the present invention, and FIG. 2 is a flowchart showing an operation procedure of the map stereoscopic display device according to the embodiment of the present invention. FIG. 3 is a block diagram showing another embodiment of the map stereoscopic display device according to the present invention.

  As shown in FIG. 1, a map stereoscopic display device 100 according to an embodiment of the present invention includes a central processing control unit 101 composed of a microprocessor, a ROM 102 that stores a control program, a RAM 103 that is a temporary storage device, and a GPS receiver. A current position detector 118 having a machine 104, a speed sensor 105 for detecting the speed of the vehicle, and a direction sensor 106 for detecting the direction of the vehicle. Further, the map stereoscopic display device 100 includes an audio output unit 107, an input operation unit 108, a map / image DB 109 including a CD-ROM, a DVD, a hard disk, and the like storing a map and image information, and a reading control unit 110, A traffic information acquisition unit 111, an image generation unit 112 having an enhancement processing unit 116, a drawing memory 113, a display unit 114, and a display control unit 115, which are connected to a BUS 119 that is an internal signal line; It has become.

  The current position detection unit 118 moves based on a signal received by the GPS receiver 104 and a detection signal of a direction sensor 106 that includes a speed sensor 105 and a gyro sensor that detect the speed of the vehicle and detects the direction of the vehicle. It calculates and updates the current position of the current vehicle in real time. The input operation unit 108 includes a button switch array, a touch panel, a toggle switch, a joystick, and the like, and is a part for inputting an input for operating the map stereoscopic display device 100 and a destination of the vehicle. The map / image DB 109 stores map information and image information such as landmarks such as buildings corresponding to the map information and signs such as intersection names. Map information / image specified by the central processing control unit 101 is stored in the map / image DB 109. Information is read out via the read control unit 110.

  In the current position detection unit 118, the GPS receiver 104 receives signals from a plurality of satellites and calculates its own position (latitude, longitude, altitude). (Direction) can also be known, and the speed sensor 105 and the direction sensor 106 are not necessarily required, but the speed as an auxiliary measuring device while traveling in a tunnel, under a guard, overpass, or in a valley of a building where satellite signals cannot be measured. A sensor 105 and a direction sensor 106 are preferably provided. In addition to using the GPS receiver 104 as the current position detection unit 118, a geomagnetic sensor may be used.

  The traffic information acquisition unit 111 is a part that communicates with the traffic information center and acquires information about roads such as traffic jams and construction. The image generation unit 112 is an image generation unit for displaying the image information read from the map / image DB 109 on the display unit 114, and the image data generated by the image generation unit 112 is developed in the drawing memory 113, The image is displayed on the display unit 114 such as a liquid crystal display panel under the control of the display control unit 115.

  As a stereoscopic display displayed on a liquid crystal display panel or the like, the image generation unit 112 simply generates stereoscopic display data from plane data, and creates a so-called bird's-eye view that only gives a sense of perspective. Next, there is one that generates stereoscopic display data from the height information of the map / image information, and when the map / image DB 109 is a storage medium having a large capacity such as a DVD, it can have altitude information of the building or the ground. Therefore, the image generation unit 112 may add height information to the planar map information to generate a pseudo three-dimensional diagram and display the two-dimensional screen on the display unit 114 such as a liquid crystal display. . These perform pseudo three-dimensional display using only images on a flat panel display.

  Most preferably, stereoscopic image display is performed using parallax between the right eye and the left eye. Then, a liquid crystal display for displaying a screen / video or the like and a liquid crystal serving as a Barrax barrier are overlapped so that the barrier liquid crystal is turned off for two-dimensional display and turned on for three-dimensional display. The image generation unit 112 may generate image data by expanding the right-eye and left-eye data conforming thereto on one screen. That is, the stereoscopic display data of the image generation unit is the stereoscopic display data of the Barrax method, and it is preferable that the display unit is configured by a Barrax barrier that can be switched on and off, as a stereoscopic image that can be seen floating. . Such a stereoscopic display is disclosed in, for example, Japanese Patent Application Laid-Open No. 10-170866.

  Furthermore, a method using a polygon image disclosed in the above-described Patent Documents 1 and 2 may be employed. The voice output unit 107 is an output part for giving guidance to the driver by voice, and guides the distance to the intersection and the direction of the right / left turn during driving to the destination by voice.

  When generating image data of a map / image to be displayed on the display unit 114, the image generation unit 112 uses the enhancement processing unit 116 to distinguish and extract an image of a destination building or the like and image information of its surroundings, Image data with different gradation levels is generated for the destination image and the peripheral image.

  For example, (1) Standard 16 gradation level image data is converted to 18 levels, and the 17th and 18th levels are applied only to the destination image. (2) 16-gradation level image data is compressed and converted to 14 gradations, and the 15th and 16th levels are applied only to the destination image. (3) The image data of 16 gradation levels is used as it is, but the destination image data is added to the “1” or “2” level calculation. (4) Image data of 16 gradation levels is used as it is, but image data other than the destination is subtracted by “1” or “2” level calculation. (5) It is possible to increase the gradation level of the image data at the destination and decrease the gradation level of the image data other than the destination. In this way, it is possible to display an image of the building at the target location as an image with a darker tone than other images, and when the driver looks at the screen, the target location can be viewed instantaneously. .

  When the map three-dimensional display device 100 (car navigation system) is put into operation and a destination is input from the input operation unit 108, the current position detection unit 118 includes the GPS receiver 104, the speed sensor 105, and the direction sensor 106. Based on the detection signal, the current position of the vehicle is calculated in real time. The central processing control unit 101 searches for a route from the input information of the current position of the vehicle and the destination, sequentially reads map / image information corresponding to the vehicle route from the map / image DB 109, and sends it to the image generation unit 112.

  The image generation unit 112 generates image data to be displayed on the display unit 114 by combining the map information and image information to be superimposed on the map, such as the surrounding buildings, intersection names, and searched route lines, and stores the image data in the drawing memory. Expand to 113. At this time, as described above, the enhancement processing unit 116 extracts and extracts the image of the destination building or the like and the image information of the periphery thereof, and the gradation level is different between the image of the destination and the image of the periphery. The generated image data is generated. The display control unit 115 displays the image data developed in the drawing memory 113 on the display unit 114. The image generation unit 112 and the enhancement processing unit 116 can be configured not only by hardware as shown in FIG. 1 but also by software processing means.

  FIG. 2 is a flowchart showing an example of an operation procedure of the map stereoscopic display device of FIG. When the map 3D display device 100 is turned on and put into operation, and the destination is input from the input operation unit 108 in step S1, the display screen frame of the display unit 114 is updated at predetermined intervals (step S2). . If it is a frame update timing, in step S3, the current position detection unit 118 causes the GPS receiver 104 to determine the current position of the vehicle from the sensor information of the speed sensor 105 and the direction sensor 106.

  Map / image information is read from the map / image DB 109 in step S4 from this current position and the destination input in the previous step S1, and the central processing control unit 101 determines between the current position and the destination in step S5. Route search is performed. Further, in step S5, information on road / traffic such as traffic jam information is acquired from the traffic information acquiring unit 111 as necessary.

  When the route search is completed and the route to be navigated is determined, in steps S6 to S9, the image generation unit 112 adds map information and image information to be superimposed on the map such as surrounding buildings, intersection names, and searched route lines. Image data to be combined and displayed on the display unit 114 is generated as polygon image data. At this time, in step S6, the image generation unit 112 separates (extracts) and extracts the image of the destination building or the like and the image information on the periphery thereof in the enhancement processing unit 116, and in step S7, the image data of the destination image data is extracted. For example, the tone level is made “2” larger than the standard tone level, and the tone level of the image data other than the destination (peripheral portion) is set to “1”, for example, than the standard tone level in step S8. In step 9, the image data is generated by combining them. That is, the enhancement processing unit 116 generates image data in which the gradation level of the destination image is different from the gradation levels of the other images around the destination.

  When the image data to be displayed on the display unit 114 is generated by the image generation unit 112, the image data is expanded in the drawing memory 113 in step S10, and displayed on the display unit 114 under the control of the display control unit 115 in step S11. Is done. Accordingly, the image displayed on the display unit 114 is displayed in a darker tone of the destination building or the like than the surrounding image. In step S12, it is determined whether or not the navigation is finished. If not finished, the process returns to step S2, and if finished, the operation is finished. If it is not the frame update timing in step S2, the process skips to step S12 for determining whether or not to end navigation.

  In the first embodiment, the enhancement processing unit 116 changes the gradation levels of the destination image information and the other image information, raises the gradation level of the destination image information, and other images. In the second embodiment of the present invention, the enhancement processing unit 116 is configured to display the destination image information and other peripheral image information by reducing the gradation level of the information. By changing the color code to be different, the luminance of the destination image information and other peripheral image information is changed and displayed.

  For example, an image other than the destination is changed from red (R: 1.0, G: 0.0, B: 0.0) to orange (R: 0.9, G: 0.1, B: 0.0). By generating and displaying as lightly converted image data as in the above, only the image information of the destination building or the like is displayed with increased brightness. Alternatively, a method such as leveling up the primary color code of the destination image is taken. As a result, the user can visually recognize the destination image even when the screen is observed instantaneously.

  FIG. 3 is a block diagram showing another embodiment of the map stereoscopic display device 100 according to the present invention. In the embodiment of FIG. 1, the map stereoscopic display device 100 includes a current position detection unit 118 and a map / image DB 109, and the map / image DB 109 can be easily updated. Absent. In the embodiment of FIG. 3, the map stereoscopic display device 100 does not include the current position detection unit 118 and the map / image DB, and the current position acquisition unit 117 acquires current position information from outside the device through a communication interface (not shown). The map / image information acquisition unit 116 for acquiring the map / image information is provided. The map stereoscopic display device 100 in FIG. 3 only has to acquire each information via the communication interface when each information is required, and the information acquisition destination may be a server that services each information. The map 3D display device 100 may be a device that operates separately. The configuration and operation of other parts of the map stereoscopic display device 100 of FIG. 3 are the same as the configuration and operation of the map stereoscopic display device 100 of FIG.

It is a block diagram which shows the structure of the map three-dimensional display apparatus which concerns on the Example of this invention. It is a flowchart which shows the operation | movement procedure of the map three-dimensional display apparatus which concerns on the Example of this invention. It is a block diagram which shows the other Example of the map three-dimensional display apparatus which concerns on this invention. It is a schematic diagram which shows the example of a display in the conventional map three-dimensional display apparatus. It is a schematic diagram which shows the example of a display in the other conventional map three-dimensional display apparatus, (a) shows the case where it displays by changing the color and the part which does not overlap about the overlapping part of a route guide line, (b) shows a route. It is a figure which shows the case where it becomes the positional relationship which a guide line hides in a building. It is a block diagram which shows the structure of the conventional map three-dimensional display apparatus.

Explanation of symbols

100 ... Map stereoscopic display device 101 ... Central processing control unit 102 ... ROM
103 ... RAM
104 ... GPS receiver 105 ... speed sensor 106 ... direction sensor 107 ... voice output unit 108 ... input operation unit 109 ... map / image DB
110 ... Reading control unit 111 ... Traffic information acquisition unit 112 ... Image generation unit 113 ... Drawing memory 114 ... Display unit 115 ... Display control unit 116 ... Enhancement processing unit 118. ..Current position detector 119 ... BUS

Claims (13)

From an input or acquired destination and current position, an image generation unit that acquires predetermined map / image information and processes the map / image information, and a display unit that stereoscopically displays the image data generated by the image generation unit In the map stereoscopic display device
The image generation unit includes an enhancement processing unit, which identifies the destination image information and other peripheral image information, and uses the destination image information as other at least destination image information. A map three-dimensional display device characterized in that it is generated as image data highlighted with respect to the image data and synthesized with the map data. Predetermined map / image information is acquired from the input operation unit, the map / image DB storing the map / image information, the destination and the current position acquired from the input operation unit and the map / image DB, and the map / image is acquired. In a map stereoscopic display device including an image generation unit that processes information and a display unit that stereoscopically displays image data generated by the image generation unit,
The image generation unit includes an enhancement processing unit, which identifies the destination image information and other peripheral image information, and uses the destination image information as other at least destination image information. A map three-dimensional display device characterized in that it is generated as image data highlighted with respect to the image data and synthesized with the map data.   The map stereoscopic display device according to claim 1, wherein the image generation unit generates stereoscopic display data from planar data.   The map stereoscopic display device according to claim 1, wherein the image generation unit generates stereoscopic display data from height information of the acquired map / image information.   The 3D display data of the image generation unit is 3D display data of a Barrax method, and the display unit has a Ballarax barrier that can be switched ON / OFF. 3D map display device.   The map stereoscopic display device according to claim 1, wherein the enhancement processing unit generates data by separating and enhancing a destination and image information around the destination.   3. The map stereoscopic display device according to claim 1, wherein the enhancement processing unit is a data converter that converts map / image information into highlighted image data.   The map three-dimensional display has a drawing memory, and the emphasis processing unit distinguishes the corresponding structure / road of the map / image information from the latitude / longitude information of the destination and writes it in the drawing memory. The map three-dimensional display device according to claim 1, wherein the map stereoscopic display device is a control unit for processing.   3. The enhancement processing unit according to claim 1, wherein the enhancement processing unit changes the gradation level of the image information of the destination and the gradation level of the image information other than the destination to generate image data. 3D map display device.   The map stereoscopic display device according to claim 9, wherein the enhancement processing unit is configured to make the gradation level of the image information of the destination larger than a standard gradation level.   The map stereoscopic display device according to claim 9, wherein the enhancement processing unit is configured to make a gradation level of image information other than the destination smaller than a standard gradation level.   3. The map stereoscopic display device according to claim 1, wherein the enhancement processing unit converts a color code of the image information of the destination to dark. 3. The map three-dimensional display device according to claim 1, wherein the enhancement processing unit converts a color code of image information other than the destination lightly.

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