JP6050615B2 - MAP DISPLAY DEVICE, MAP DISPLAY METHOD, AND MAP DISPLAY PROGRAM - Google Patents

Description

  The present invention relates to a map display.

  A map that displays at least a part of features (such as a building) by a three-dimensional model is known. The three-dimensional model is for three-dimensionally illustrating the height of a feature (size in the vertical direction) on a map. When displaying a feature by a three-dimensional model, the depression angle is often made smaller than 90 degrees. When such a display is made, it may be difficult to see the characters that mark the feature overlapping with the three-dimensional model. As a technique in view of this, there is known a technique in which the above-mentioned duplication is eliminated and the characters are easy to see by expressing the height of the three-dimensional model low (for example, Patent Document 1).

JP 2000-321975 A

  The problem of the above prior art is that the three-dimensional model appears to be different from the real one by changing the scale of the three-dimensional model between the horizontal direction and the height direction.

  SUMMARY An advantage of some aspects of the invention is to solve the above-described problems and can be realized as the following forms or application examples.

Application Example 1: A viewpoint setting unit that sets a viewpoint in a three- dimensional space, and a three- dimensional map in which features included in a map range defined by the set viewpoint are three- dimensionally arranged on the ground surface are displayed. A display unit; an input unit that receives an input of an instruction by a user; and a processing unit that changes a display position of the target feature to be changed based on the instruction input by the input unit. A map display device capable of changing the display position of a target feature in a plurality of directions in a three-dimensional map . According to this application example, the display position of the change target feature can be changed in a plurality of directions in the three-dimensional map by an instruction from the user. In addition, the memory | storage of the map by a memory | storage means may be temporary (volatile), and may be non-temporary (nonvolatile).

Application Example 2: The map display device according to Application Example 1 , wherein the processing unit displays an icon that is a candidate for the display position after the change on the display unit around the feature to be changed, and is selected through the input unit. The map display apparatus which determines the display position corresponding to the made icon as a display position after a change. According to this application example, the user's input for changing the display position is as simple as selecting a candidate.

  The present invention can be implemented in various forms other than the above. For example, the present invention can be realized in the form of a map display method, a map display program, a non-temporary storage medium storing the program, and the like.

Configuration of map display system. The flowchart which shows map display processing. An example of a displayed map. The display position of the 3D model moves. The display position of the 3D model moves.

First Embodiment Configuration of Map Display System 10 (FIG. 1): FIG. As shown in FIG. 1, the map display system 10 includes a smartphone 20 and a map server 50. The smartphone 20 is a multifunctional mobile phone that can be connected to the Internet. The smartphone 20 and the map server 50 can be connected to each other via the Internet INT. The smartphone 20 is wirelessly connected to the Internet INT via the base station BS. In practice, the smartphone 20 is connected to the Internet INT via a transmission / reception antenna, a radio base station, and an exchange. The base station BS shown in FIG. 1 includes these antennas, radio base stations, and exchanges.

  As shown in FIG. 1, the map server 50 includes a communication unit 52, a control unit 54, and a map database 56. The map database 56 includes three-dimensional map data including ground surface information representing the ground surface in a three-dimensional space, feature information including shape and height information of the feature, and attribute information including a symbol marking the feature. Remember. Specifically, the ground surface represents a shape including the undulations of the ground, and is represented using elevation data such as contour lines and data that distinguishes administrative divisions, roads, rivers, sea levels, and the like. The feature information is information such as the shape and height of the feature, that is, information specifying the horizontal region of the feature (such as latitude and longitude of the representative position), information in the height direction (vertical direction), etc. It is. Specifically, the information for specifying the horizontal region of the feature is, for example, latitude / longitude information of the constituent points of the polygon representing the horizontal shape of the feature. The information in the height direction (vertical direction) includes information indicating how many floors the feature is above and below the ground, a map representing the floor of each floor in two dimensions, and the like. The height direction (vertical direction) information may be represented by, for example, an upward distance from the ground surface or a downward distance from the ground surface. Further, the map database 56 includes hierarchy moving means information representing the connection between floors. Hierarchy moving means information is information indicating the position, type, etc. with which each hierarchy of the three-dimensional model is in contact by means of hierarchy moving means (stairs, escalators, elevators, etc.). The map database 56 may include network information used for route search. The control unit 54 acquires map data corresponding to the request from the smartphone 20 from the map database 56 and transmits the map data to the communication unit 52 by executing this program. The communication unit 52 receives a command from the smartphone 20 and transmits map data acquired by the control unit 54. For this transmission, the communication unit 52 and the Internet INT are used.

On the other hand, the smartphone 20 includes a main control unit 22, a communication unit 32, a communication control unit 34, a touch panel 36, a display unit 38, an audio output unit 40, and a GPS receiver 42. The main control unit 22 includes a CPU 24, a RAM 26, and a ROM 28. The main control unit 22 controls other devices provided in the smartphone 20. The RAM 26 temporarily stores map data transmitted from the map database 56. The ROM 28 stores a program executed by the CPU 24. This program is for realizing a map display process (described later together with FIG. 2) and the like. The communication unit 32 is a circuit for performing data communication or voice communication with the base station BS. The communication unit 32 operates to access the map server 50 via the base station BS and acquire map data. The communication control unit 34 is a circuit that performs incoming calls and calls for voice calls, conversion between voice signals and electrical signals, and the like. The smartphone 20 functions as a telephone by including the communication unit 32 and the communication control unit 34. The touch panel 36 has a touch panel function.

The audio output unit 40 is a speaker that outputs audio. The GPS receiver 42 is a device for acquiring information indicating the current location of the smartphone 20 by receiving GPS signals transmitted from a GPS satellite and an indoor GPS transmitter. The current location is a position specified by the latitude / longitude and the hierarchical position. The hierarchical position is information indicating on which floor of the feature. The hierarchical position can be estimated based on GPS signals from GPS satellites and / or indoor GPS transmitters. The display unit 38 displays an image on the liquid crystal screen based on the control of the main control unit 22. The touch panel 36 supports multi-touch input, and acquires one or more position coordinates at which a user's finger, a dedicated pen, or the like touches the liquid crystal screen and inputs the coordinates to the main control unit 22. The main control unit 22 determines a user instruction based on the input position coordinates, and executes processing corresponding to the determined instruction. The user instruction is, for example, an instruction to start map display or change the center point, depression angle, azimuth angle, viewpoint distance, scale, etc. of the displayed map.

Map display processing (Figure 2):
FIG. 2 is a flowchart showing map display processing. The execution subject of the map display process is the main control unit 22. The trigger for starting the execution of the map display process is that the main control unit 22 displays a map. To be precise, the “map display” is “to be performed on the liquid crystal screen by the display unit 38 based on the control of the main control unit 22” as described above, but here “to be performed by the main control unit 22”. It describes as.

  First, the main control unit 22 determines what the input instruction is (step S61). When the main control unit 22 determines whether there is an input of a viewpoint (at least one of a center point, a depression angle, an azimuth angle, a viewpoint distance, a scale, etc.) on the three-dimensional space for changing the display range of the map, In accordance with the input, the main control unit 22 arranges the three-dimensional model included in the map display range on the ground surface and arranges characters that mark the feature (step S63). . In the present embodiment, the instruction to move the center point is input by swiping any one point on the map. The instruction to change the depression angle, the azimuth angle, and the scale is performed by multi-touch input. Subsequently, the main control unit 22 displays a map according to the input (step S65).

  FIG. 3 shows an example of the displayed map. FIG. 3A shows a map when the main control unit 22 sets the depression angle of the viewpoint in the three-dimensional space to 90 degrees. Since the depression angle is 90 degrees, the features included in the map range are displayed two-dimensionally. FIG. 3B shows a three-dimensional display of the features displayed two-dimensionally on the ground surface of FIG. 3A by changing the depression angle of the viewpoint in the three-dimensional space by the main control unit 22. The map changed into the three-dimensional model is shown. The main control unit 22 arranges the respective three-dimensional models on the ground surface, and arranges symbols for marking the features. A symbol is a character or the like that marks a feature. As shown in FIGS. 3A and 3B, the features displayed in this example are five buildings 90 to 93 and an intersection 94.

  Next, when the azimuth angle of the viewpoint is changed, the main control unit 22 rotates the symbol so as to face the changed viewpoint (step S67), and returns to step S61. As shown in FIG. 3, the building 90 is “XX building”, the building 91 is “□□ hotel”, the building 92 is “XX hotel”, the building 93 is “ΔΔ building”, and the intersection 94 is “ ◇◇ Intersection ” These symbols are defined on the surface of a rectangular model with no thickness. When the depression angle and / or azimuth angle is changed, the main control unit 22 rotates the model so that the plane of the model is orthogonal to the changed line-of-sight direction.

  On the other hand, when the input instruction is a movement of the three-dimensional model (Step S61, movement of the 3D model), the main control unit 22 displays the three-dimensional model from the representative point of the selected three-dimensional model. It is moved in the direction of the imaginary line having the shortest length among the plurality of imaginary lines extending to the periphery of the region (step S69). Specifically, first, the main control unit 22 specifies a display area of the specified three-dimensional model that is defined from the shape and viewpoint of the specified three-dimensional model. Next, the main control unit 22 draws a virtual line radially from the central point, which is the representative point of the specified display area, to the periphery of the display area, and determines the direction of the virtual line in which the length of the virtual line is the shortest. decide. Next, the main control unit 22 moves the designated three-dimensional model to a position that does not overlap the specified display area in the determined direction. The main control unit 22 temporarily stores the display area of the three-dimensional model before being moved, and obtains a position where the display area and the shape of the designated three-dimensional model do not overlap as a position that does not overlap. . Next, the main control unit 22 returns the designated three-dimensional model to the display position before the change after a predetermined time has elapsed (step S71), and returns to step S61.

  FIG. 4 shows how the display position of the three-dimensional model moves. FIG. 4A shows a three-dimensional map with a certain depression angle and azimuth angle based on the input viewpoint. FIG. 4B shows a three-dimensional map in which the building 92 is moved by the main control unit 22 based on the display of FIG. As shown in FIG. 4A, most of the three-dimensional model and symbol of the building 90 and the shape and symbol of the intersection 94 are hidden by the three-dimensional model of the building 92 and are not displayed.

  The “instruction to move the three-dimensional model” determined in step S61 includes selection of a three-dimensional model to be moved. The three-dimensional model selected as the three-dimensional model to be moved is a three-dimensional model in which the display range is double-tapped (tap twice in quick succession). In addition, it may replace with a double tap and may be made to select by long press (it keeps touching more than predetermined time). The three-dimensional model selected in this way is moved by the main control unit 22 as shown in FIG. Then, as shown in FIG. 4A, the main control unit 22 returns the target three-dimensional model to the display position before moving after a predetermined time has elapsed. Specifically, the main control unit 22 stores the display position before the movement of the three-dimensional model to be moved, reads the stored display position before the movement after a predetermined time has elapsed, and displays the display position. Perform a return.

effect:
According to the first embodiment, information hidden in the three-dimensional model can be displayed without changing the depression angle and the azimuth while displaying using the three-dimensional model. The information hidden in the three-dimensional model includes other three-dimensional models and two-dimensional models, and symbols for marking them. After the three-dimensional model is moved, the original display is restored regardless of the user's operation, thereby reducing the burden on the user.

Correspondence between embodiment and application example:
Step S61 corresponds to software for realizing the viewpoint setting means, step S69 for the position changing unit, and step S71 for the position returning unit. The CPU 24 corresponds to hardware resources for realizing processing means, the RAM 26 for storage means, and the touch panel 36 for realizing display means and input means.

Embodiment 2:
In the first embodiment, the 3D model selected by the user is automatically moved to a position outside the display area of the 3D model and having the smallest amount of movement, but the user can arbitrarily move the 3D model. May be specified.
For example, the “instruction to move the three-dimensional model” determined in step S61 includes selection of the three-dimensional model to be moved and designation of the position after the movement. The three-dimensional model selected as the three-dimensional model to be moved is a three-dimensional model in which the display range is double-tapped (tap twice in quick succession). In addition, it may replace with a double tap and may be made to select by long press (it keeps touching more than predetermined time). The three-dimensional model selected in this way can be dragged. The position after the movement is designated as the position where the three-dimensional model is dropped. As a result of the drag and drop, the position of the three-dimensional model moves. Then, after the predetermined time has elapsed, the moved three-dimensional model returns to the position before the movement.

Embodiment 3:
Next, Embodiment 3 will be described. The third embodiment is realized by the same hardware as the above embodiment. Only the processing by the main control unit 22 is different from the display and user interface as the processing. Specifically, the method relating to the movement of the three-dimensional model is different from the above embodiment. FIG. 5 is a diagram for explaining a technique employed by the third embodiment. FIG. 5A shows a three-dimensional map with a certain depression angle and azimuth, and FIG. 5B shows a three-dimensional map where the building 92 has moved based on the display of FIG. 5A.
What is selected as a three-dimensional model to be moved is a three-dimensional model whose display range is double-tapped. The main control unit 22 displays an icon near the center of the three-dimensional model whose display range is double-tapped. This icon corresponds to each direction of “left”, “right”, “front”, “back”, and “up”. “Left”, “right”, “front”, and “back” are all parallel to the horizontal direction. “Up” means upward in the vertical direction. Each icon is a combination of a character indicating the direction and an arrow indicating the direction. The position designated as the moved position is a position moved by a predetermined distance in the direction indicated by the selected icon. In the case of “Left”, “Right”, “Front”, and “Up”, the predetermined distance is a distance at which all the information hidden by the selected 3D model can be displayed, that is, the display range does not overlap before and after the movement. It is a long distance. In the case of “back”, since the distance becomes too long if it is moved in the same way as “left” or the like, the movement is made a shorter distance than in the case of “left” or the like. The icon is selected by tapping. For example, when the “back” icon is tapped, as shown in FIG. 5B, the position of the building 92 moves to the back. Then, after a predetermined time has elapsed, the display returns to the display of FIG. Thus, according to the third embodiment, the same effect as that of the second embodiment can be obtained.

Other embodiments:
The trigger for returning the moved three-dimensional model to the original position may not be the passage of a predetermined time. For example, it may be triggered by an input of an instruction by the user.
There are various ways of determining the position of the three-dimensional model after movement. For example, the movement of the three-dimensional model may be instructed by a flick operation, and the movement direction may be determined based on the flick direction and the movement amount based on the flick speed. The manner in which the three-dimensional model moves may be indicated by animation. The position after movement by this method may be outside the map display range.
When the direction of a candidate for movement is indicated by an icon as in the second embodiment, various candidates can be considered. For example, a “downward” direction may be added. The “downward” direction is the downward direction in the vertical direction. When it is moved downward, for example, it may be displayed as if buried in the ground.
The three-dimensional model to be moved may be automatically selected regardless of a user instruction. As the selection criterion, for example, the one arranged at the center in the horizontal direction of the screen and in front may be selected, or the one having the largest display range may be selected.
The display mode of the three-dimensional model may be changed when the three-dimensional model is selected as a movement target or when the three-dimensional model moves. The change of the display mode may be, for example, changing the color or blinking.
Embodiments 2 and 3 may be combined. That is, an arrow may be shown as shown in FIG. 5A, and the three-dimensional model may be moved by either selection of the arrow or drag and drop.

The device to be incorporated may not be a smartphone. For example, various types such as a normal mobile phone, a tablet personal computer, a stationary personal computer (desktop type or notebook type), a car navigation device, a head mounted display (HMD), and the like are conceivable.
In the case of the HMD, a three-dimensional model to be moved may be selected or a display position after the movement may be determined by detecting the user's line of sight.
What is necessary is just to change an input means according to the apparatus to incorporate. For example, in the case of a personal computer, a mouse, a touch pad, or the like can be used. In the case of a smartphone, a hard key may be used.
The display means may not be a liquid crystal display, and for example, a display using an organic EL, a plasma display, electronic paper, a retinal projection display, or the like can be considered.

  The present invention is not limited to the above-described embodiments, examples, and modifications, and can be realized with various configurations without departing from the spirit of the present invention. For example, the technical features in the embodiments, examples, and modifications corresponding to the technical features in each form described in the summary section of the invention are to solve some or all of the above-described problems, or In order to achieve part or all of the above effects, replacement or combination can be performed as appropriate. Further, if the technical feature is not described as essential in the present specification, it can be deleted as appropriate.

DESCRIPTION OF SYMBOLS 10 ... Map display system 20 ... Smartphone 22 ... Main control part 24 ... CPU
26 ... RAM
28 ... ROM
32 ... Communication unit 34 ... Communication control unit 36 ... Touch panel 38 ... Display unit 40 ... Audio output unit 50 ... Map server 52 ... Communication unit 54 ... Control unit 56 ... Map database 90 ... Building 91 ... Building 92 ... Building 93 ... Building 94 ... Building BS ... Base station INT ... Internet

Claims (3)

Viewpoint setting means for setting a viewpoint in a three- dimensional space;
Display means for displaying a three-dimensional map obtained by three-dimensionally arranged on the feature of the ground surface that is included in the map range defined by the previous SL set viewpoint,
An input means for receiving an instruction input by a user ;
Based on an instruction input by the entering-force means, and processing means for changing the display position to be changed feature to be changed,
The map display device that enables the processing means to change the display position of the change target feature in a plurality of directions in the three-dimensional map . The processing means causes the display means to display an icon that is a candidate for the display position after the change around the change target feature, and changes the display position corresponding to the icon selected through the input means after the change. The map display device according to claim 1, wherein the map display device is determined as a display position. The viewpoint setting means sets a viewpoint in a three-dimensional space,
The display means displays a three-dimensional map in which features included in the map range defined by the set viewpoint are three-dimensionally arranged on the ground surface,
The input means receives an instruction input from the user,
  The processing means changes the display position of the change target feature to be changed based on the instruction input by the input means,
The processing means is a map display program for causing a computer to function so that the display position of the change target feature can be changed in a plurality of directions in the three-dimensional map.

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