JP2007121797A - Map display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a user to easily comprehend what a three-dimensional map displayed on a screen indicates and which position and direction it is viewed from. <P>SOLUTION: An icon viewpoint ai other than a reference viewpoint ip is set on a SPV map viewed from the reference viewpoint ip, and an icon viewpoint map viewed from the icon viewpoint ai is displayed together with the SVP map. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a map display device.

Conventionally, for example, in the navigation device described in Patent Document 1, a scroll switch that translates a three-dimensionally displayed map in the front-back, left-right, and diagonal directions, and the visual field direction from the viewpoint position in the three-dimensional display is leftward or rightward. A rotary scroll switch for rotating and scrolling the map displayed three-dimensionally is provided so as to rotate in the direction.
JP 2004-117830 A

  In the above prior art, the user operates the scroll switch, for example, the entrance position of a parking lot existing on a three-dimensionally displayed map (hereinafter referred to as a three-dimensional map) is hidden behind a facility, or a toll road Even if the interchange shape is difficult to understand, the position and shape can be confirmed. However, while scrolling the 3D map, it may become difficult to know from which position and direction the 3D map displayed on the screen is viewed.

  Moreover, the said prior art cannot display the inside of the plant | facility which exists on a three-dimensional map. Furthermore, when the inside of a facility is displayed, there is a problem that it becomes difficult to know which facility is being displayed.

  The present invention has been made in view of the above problems, and provides a map display device that can easily grasp what the three-dimensional map displayed on the screen is viewed from which position and direction. Objective.

The map display device according to claim 1, which has been made to achieve the above object, displays a three-dimensional map viewed from a reference viewpoint,
Another viewpoint setting means for setting one or more other viewpoints different from the reference viewpoint on the three-dimensional map viewed from the reference viewpoint;
Display control means for displaying a 3D map viewed from another viewpoint set by another viewpoint setting means, which is different from the 3D map viewed from the reference viewpoint.

  The present invention focuses on the fact that in order to scroll the three-dimensional map itself viewed from the reference viewpoint, it is difficult to know from which position and direction it is viewed while scrolling. One or more other viewpoints different from the reference viewpoint are set on the three-dimensional map viewed from the viewpoint, and the three-dimensional map viewed from the set other viewpoint is displayed.

  As a result, the user can know the position and direction of the set other viewpoint from the three-dimensional map viewed from the reference viewpoint. Therefore, from which position and direction the 3D map viewed from the other viewpoint is viewed. I will understand.

  Preferably, the display control means displays a three-dimensional map viewed from another viewpoint together with the three-dimensional map viewed from the reference viewpoint. By displaying in this way, a three-dimensional map viewed from another viewpoint can be confirmed, and at the same time, the position and direction of the other viewpoint can be grasped.

  According to a third aspect of the present invention, it is preferable to include another viewpoint changing means for changing at least one of the position of the other viewpoint, the depression angle from the other viewpoint, and the viewing direction from the other viewpoint set by the other viewpoint setting means. . As a result, it is possible to arbitrarily change settings relating to other viewpoints.

  According to a fourth aspect of the present invention, the other viewpoint changing means continuously changes at least one of the position of the other viewpoint, the depression angle from the other viewpoint, and the visual field direction from the other viewpoint, and the display control is performed. Preferably, the means continuously changes the display of the three-dimensional map viewed from the other viewpoint in accordance with the continuous change regarding the other viewpoint. Thereby, the display of the three-dimensional map seen from the other viewpoint is continuously changed in conjunction with the continuous change of the setting regarding the other viewpoint.

  According to a fifth aspect of the present invention, there is provided instruction means for instructing completion of the change of the other viewpoint changing means, and the display control means receives the instruction from the instruction means and displays the three-dimensional map viewed from the other viewpoint. It may be changed. As a result, a three-dimensional map viewed from another viewpoint when receiving an instruction from the instruction means is displayed.

  The storage means for storing information relating to the inside of the facility on the three-dimensional map as claimed in claim 6 is provided, and the other viewpoint setting means can be set inside the facility on the three-dimensional map, The means preferably displays a three-dimensional map inside the facility viewed from the other viewpoint when the other viewpoint is set inside the facility by the other viewpoint setting means.

  As a result, the inside of the facility existing on the three-dimensional map can be displayed. In addition, the user can know which facility is being displayed by the three-dimensional map viewed from the reference viewpoint.

  The road traffic information acquisition means for acquiring road traffic information including information on at least one of road congestion, traffic restrictions, and construction as claimed in claim 7, wherein the display control means includes a reference viewpoint and other viewpoints. It is preferable to display a point or section corresponding to the road traffic information on the three-dimensional map viewed from.

  Thereby, in the 3D map viewed from the reference viewpoint, for example, even if the road display of the traffic jam section is hidden behind the facility and cannot be confirmed, the road of the traffic jam section from the 3D map viewed from the other viewpoint Will be able to confirm.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, this embodiment demonstrates the example at the time of implement | achieving the map display apparatus of this invention as one function of a vehicle-mounted navigation apparatus.

  The present invention is realized as one function of the in-vehicle navigation device, and for example, the function program of the present invention is installed in other in-vehicle terminals, mobile phones, PDAs (Personal Digital Assistants), PCs (Personal Computers), etc. It can also be realized by executing.

  In FIG. 1, the whole structure of a vehicle-mounted navigation apparatus is shown. The storage unit 2 in FIG. 1 is a storage device that stores various data including so-called map matching data for improving the accuracy of position detection, map data, and facility drawing data for displaying the inside of a specific facility. Various data are stored in a storage medium such as a CD (Compact Disk), a DVD (Digital Versatile Disc), or an HD (Hard Disk).

  The real-time information acquisition unit 3 includes a GPS (Global Positioning System) receiver, a direction sensor, a gyro sensor, a vehicle position sensor that calculates current position information of the vehicle, a VICS (Vehicle Information and Communication System), etc. VICS communication unit that obtains road traffic information including traffic jam information, traffic regulation information, construction information, etc. provided by the traffic information system, a camera that captures images of the surroundings of the vehicle, and the empty / full state of the parking lot, empty vehicle An external information communication unit is provided for acquiring parking lot information including an empty vehicle position when in a state from the outside.

  The sensor group 5 includes an acceleration sensor that detects acceleration generated in the vehicle, a steering sensor that detects a steering angle, an accelerator pedal operation sensor that detects an operation amount of an accelerator pedal, a brake pedal depression force sensor that detects a depression force of a brake pedal, and the like. Composed. These detection results are used by the control unit 4 to determine the driving state of the driver.

  The display 6 is configured by, for example, a liquid crystal display, and is disposed near the center of the instrument panel as shown in FIG. The display 6 can be divided and displayed on a plurality of screens. The audio output unit 7 includes a speaker, an audio amplifier, and the like, and is used for audio guidance and the like.

  For example, a touch switch or a mechanical switch integrated with the display 6 is used as the operation unit 8, an operation for switching a map display mode of a road map (hereinafter referred to as a map) displayed on the display 6, an icon described later. It is used for various inputs such as a viewpoint setting change operation, a scroll operation of a map displayed on the display 6, character input, key selection, and the like.

  The control unit 4 executes a route guidance function that automatically selects an optimum route from the current position to the destination according to an operation on the operation unit 8 to form and display a guidance route, and also performs a map matching process. The calculation of guidance voice, the drawing of maps, etc. are performed. The Dijkstra method is known as a method for automatically setting an optimum route in this way.

  This control unit 4 is actually constituted by a microcomputer, but functionally includes a map data acquisition unit, a map matching unit, a route calculation unit, a route guidance unit, a drawing unit, and a screen control management unit. It is configured.

  The map matching unit specifies on which road the current position exists using the road shape data of the map data read from the storage unit 2 and the current position information acquired by the real-time information acquisition unit 3. Further, the user performs an operation of displaying a desired map using the operation unit 8 and sets the destination.

  The route calculation unit calculates information on the current position calculated by the map matching unit and a route from the departure point specified by the user and the destination. The route guidance section calculates the necessary points for guidance from the above route calculation results and road shape data stored in the map data, intersection location information, crossing location information, etc. (Whether it turns to the right or to the left, etc.).

  The drawing unit draws a map corresponding to the current position, a schematic diagram of an expressway, and an enlarged view of the vicinity of the intersection in the vicinity of the intersection according to the instruction of the screen control management unit, and a frame for storing the display image on the display 6 It memorize | stores in memory (for example, VRAM).

  In this case, the drawing unit sets a reference point on the map based on the current position information, and determines the viewing direction from the set reference point and the display range of the map. FIG. 3 shows a reference point, a reference viewpoint ip, a reference line, a display range of a three-dimensional map viewed from the reference viewpoint ip, and other viewpoints different from the reference viewpoint ip in a virtual three-dimensional space (XYZ coordinate system). It is a perspective view which shows the example of a setting of the display range of the three-dimensional map seen from viewpoint ai and this icon viewpoint ai.

  As shown in FIG. 3, the reference point is set on the two-dimensional plane (XY coordinate system) on the map, on the road where the vehicle is located, on the road included in the route to the destination, or in the vicinity of the road. The The reference viewpoint ip is set at an altitude corresponding to a preset depression angle with respect to a two-dimensional plane map. The reference line indicates the viewing direction of the reference viewpoint ip, and is determined from the positional relationship between the reference viewpoint ip and the reference point. The display range of the three-dimensional map viewed from the reference viewpoint ip defines the vertical and horizontal dimensions of the visual field range when the reference point is viewed from the reference viewpoint ip, and is determined according to the scale of the map. Is done.

  The icon viewpoint ai is set in the XYZ coordinates, and the setting of the position, the depression angle, the viewing direction, and the like can be arbitrarily changed by a user operation by the operation unit 8. The display range of the three-dimensional map viewed from the icon viewpoint ai is determined according to the settings of the position, depression angle, field of view, etc. of the icon viewpoint ai. For example, as shown in FIG. In some cases, the range is determined to be the same as the display range of the three-dimensional map.

  The drawing unit determines the display range of the three-dimensional map viewed from the reference viewpoint ip and the icon viewpoint ai, and performs an operation of calculating coordinate conversion parameters necessary for displaying the three-dimensional map, and further includes the determined display range An operation of reading a predetermined range of map data from the storage unit 2 is performed (a portion overlapping with the map data on the already-displayed screen does not need to be read again, and only newly required map data is read).

  Next, the drawing unit performs coordinate conversion of the map data obtained as described above into three-dimensional image data using the coordinate conversion parameters, and the map data after the coordinate conversion includes points corresponding to the vehicle position and road traffic information. In addition, image data in which display information indicating the empty / full state of a parking lot, a parking lot, an empty vehicle position in an empty state, and the like are superimposed is displayed on the display 6 in a bird's eye view state.

  The map data acquisition unit acquires map data necessary for each processing unit from the storage unit 2 and provides it to each processing unit. Then, in the control unit 4, based on the information calculated by the route guidance unit, when the vehicle travels and reaches a position to be guided, a desired image is drawn on the drawing unit, or a predetermined sound is output from the audio output unit 7. The user can be output to guide the user to the destination.

  Next, the operation of the in-vehicle navigation device 1 will be described. The in-vehicle navigation device 1 includes a normal mode for displaying a two-dimensional map shown in FIG. 4A as a map display mode, and a three-dimensional map shown in FIG. 4B (hereinafter referred to as satellite point view (SPV) map). The SPV mode for displaying the icon viewpoint map can be selected.

  As shown in FIG. 4B, when the SPV mode is selected, the SPV map viewed from the reference viewpoint ip is displayed and the icon viewpoint map viewed from the icon viewpoint ai set on the SPV map. Is displayed. Thereby, the icon viewpoint map seen from the icon viewpoint ai can be confirmed, and at the same time, the position and field of view direction of the icon viewpoint ai can be grasped from the SPV map.

  Further, as shown in FIG. 4B, even if the SPV map is hidden behind the facility and the vacant position of the parking lot pk cannot be confirmed when it is empty or empty, the icon viewpoint map can be used. Will be able to confirm it. In addition, although not shown in the drawing, the SPV map and the icon viewpoint map are displayed with overlapping points and sections corresponding to the road traffic information. For example, in the SPV map, traffic congestion near the entrance of the expressway or near the destination. Even when the display of the road of the section is hidden behind the facility and cannot be confirmed, the road of the traffic jam section can be confirmed from the icon viewpoint map.

  Further, as described above, the icon viewpoint ai shown in FIG. 4B can be continuously and arbitrarily set in the position, depression angle, and viewing direction (R / L direction) by the operation of the user by the operation unit 8. Can be changed. For example, when the visual field direction is continuously changed from the visual field direction of the icon viewpoint ai shown in FIG. 5A to the L direction or the R direction, the visual field direction is continuously changed as shown in FIG. 5B. Icon perspective map linked to is displayed.

  Further, the position of the icon viewpoint ai can be set inside a specific facility having facility drawing data. In this case, a three-dimensional map inside the facility viewed from the icon viewpoint ai is displayed as the icon viewpoint map. Thereby, it becomes possible to confirm the inside of the facility existing on the SPV map from the icon viewpoint map, and from the SPV map, it can be understood which facility the icon viewpoint map displays. In addition, when the icon viewpoint ai on the SPV map is located inside the facility, it is preferable to grasp the position and direction of the icon viewpoint ai by, for example, transparently displaying the facility.

  Further, as shown in FIG. 4B, the icon viewpoint ai of the SPV map is displayed by, for example, an icon indicating the shape of a bird, and the position, depression angle, visual field direction (R) by the user's operation by the operation unit 8. / L direction) is changed, the position and orientation of the bird may be changed according to the change. Thereby, the user can know from which position and direction the icon viewpoint map is viewed from the position and orientation of the bird.

  Next, map display processing executed in the car navigation device will be described with reference to the flowchart shown in FIG. First, in step S10, it is determined whether or not the map display mode has been changed to the SPV mode. If the determination is affirmative, the process proceeds to step S20. If the determination is negative, the normal mode two-dimensional map shown in FIG. 4A is displayed until the mode is changed to the SPV mode. Hold the standby state.

  In step S20, the SPV map and the icon viewpoint map shown in FIG. The position, depression angle, and visual field direction of the icon viewpoint ai displayed on the SPV map are set based on preset initial values.

  In step S30, the operation unit 8 is operated to change the position, the depression angle, and the viewing direction of the icon viewpoint ai. As described above, the position of the icon viewpoint ai can be moved not only on the SPV map but also inside a facility such as a building on the SPV map.

  In step S30, the SPV map is scroll-displayed with the operation of the icon viewpoint ai. When the operation of the icon viewpoint ai is completed, the user is notified to press the view button of the operation unit 8.

  In step S40, it is determined whether or not the view button has been pressed. Here, when an affirmative determination is made, in step S50, the icon viewpoint map viewed from the operated icon viewpoint ai is updated. Thereby, the icon viewpoint map viewed from the icon viewpoint ai when the view button is pressed is displayed. On the other hand, if a negative determination is made, the process proceeds to step S30, and the above-described process is repeated.

  In step S60, it is determined whether the map display mode has been changed to the normal mode. Here, when an affirmative determination is made, this process is terminated and a normal mode two-dimensional map is displayed, and when a negative determination is made, the process proceeds to step S30 and the above-described process is repeated.

  As described above, the in-vehicle navigation device 1 according to the present embodiment sets an icon viewpoint ai different from the reference viewpoint ip on the SPV map viewed from the reference viewpoint ip, and the icon viewpoint map viewed from the icon viewpoint ai together with the SPV map. It was set as the structure displayed. As a result, the user can know the position and direction of the icon viewpoint ai from the SPV map viewed from the reference viewpoint ip. Therefore, the user can see the icon viewpoint map viewed from the icon viewpoint ai from which position and direction. I will understand.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.

  For example, in the present embodiment, only one icon viewpoint ai different from the reference viewpoint ip is set, but a plurality of icon viewpoints ai may be set. If a plurality of icon viewpoints ai are set, an icon viewpoint map viewed from each icon viewpoint ai may be displayed together with the SPV map.

  For example, in this embodiment, as shown in FIG. 4B, the SPV map and the icon viewpoint map are displayed at the same time, but the position, depression angle, and viewing direction of the icon viewpoint ai displayed on the SPV map are displayed. After changing the setting, the SPV map may be switched to the icon viewpoint map for display. By displaying in this way, it is possible to confirm the three-dimensional map viewed from the icon viewpoint ai after confirming the position and direction of the icon viewpoint ai. As a result, it can be understood from which position and direction the icon viewpoint map displayed on the screen is viewed.

1 is a block diagram illustrating an overall configuration of an in-vehicle navigation device 1. FIG. It is a figure which shows arrangement | positioning of the display. It is a perspective view showing a reference point, a reference line, and a viewpoint ip in a virtual three-dimensional space (XYZ coordinate system). (A) is a figure which shows the screen display at the time of designating normal mode as map display mode, (b) is a figure which shows the screen display at the time of designating SPV mode as map display mode. (A) is a figure which shows the screen display of an icon viewpoint map, (b) is a figure which shows the screen display of an icon viewpoint map when the visual field direction of the icon viewpoint ai is changed to the L circumference or the R circumference. . It is a flowchart which shows the flow of a map display process.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car-mounted navigation apparatus 2 Memory | storage part 3 Real time information acquisition part 4 Control part 5 Sensor group 6 Display 7 Audio | voice output part 8 Operation part ai Icon viewpoint ip Reference viewpoint

Claims (7)

A map display device that displays a three-dimensional map viewed from a reference viewpoint,
Other viewpoint setting means for setting one or more other viewpoints different from the reference viewpoint on the three-dimensional map viewed from the reference viewpoint;
A map display device comprising: display control means for displaying a three-dimensional map viewed from another viewpoint set by the other viewpoint setting means, which is different from the three-dimensional map viewed from the reference viewpoint.   The map display device according to claim 1, wherein the display control means displays a 3D map viewed from the other viewpoint together with a 3D map viewed from the reference viewpoint.   The other viewpoint changing means for changing at least one of the position of the other viewpoint set by the other viewpoint setting means, the depression angle from the other viewpoint, and the visual field direction from the other viewpoint. 2. The map display device according to 2. The other viewpoint changing means continuously changes at least one of the position of the other viewpoint, the depression angle from the other viewpoint, and the visual field direction from the other viewpoint,
4. The map display device according to claim 3, wherein the display control means continuously changes the display of the three-dimensional map viewed from the other viewpoint in accordance with the continuous change regarding the other viewpoint. Instructing means for instructing completion of the change of the other viewpoint changing means,
4. The map display device according to claim 3, wherein the display control means changes the display of the three-dimensional map viewed from the other viewpoint in response to an instruction from the instruction means. Storage means for storing information about the inside of the facility on the three-dimensional map;
The other viewpoint setting means can be set inside a facility on the three-dimensional map,
The display control means displays a three-dimensional map inside the facility viewed from the other viewpoint when the other viewpoint is set inside the facility by the other viewpoint setting means. The map display apparatus of any one of -5. Road traffic information acquisition means for acquiring road traffic information including information on at least one of road congestion, traffic regulation, and construction;
The said display control means displays the point applicable to the said road traffic information, or a section on the three-dimensional map seen from the said reference | standard viewpoint and the said other viewpoint, The any one of Claims 1-6 characterized by the above-mentioned. The map display device described in 1.

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