JP2014002277A - Map display device, map display method, and program for map display - Google Patents

Abstract

Kind Code: A1 To make it difficult to hide a symbol marking a feature in a three-dimensional model without making it difficult to see the three-dimensional model of the feature.
As shown in (A), there is a case where an “XX hotel” marking a building 92 is hidden in a building 90 expressed by a three-dimensional model due to a change in depression angle. Therefore, by translating the “XX hotel” upward in the height direction, the state where the “XX hotel” is hidden in the building 90 is eliminated as shown in FIG.
[Selection] Figure 6

Description

  The present invention relates to a map display.

  A map is known that displays at least a part of features (such as a building) by a three-dimensional model that three-dimensionally represents the features. 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 easily seen 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 it is difficult to see the three-dimensional model of the feature. This is because changing the scale of the three-dimensional model between the horizontal direction and the height direction makes the three-dimensional model look different from the actual one.

  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 three-dimensional map 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 is stored. Storage means for performing; viewpoint setting means for setting a viewpoint in the three-dimensional space; using the three-dimensional map, features included in a map range defined by the set viewpoint as the feature information Processing means for determining a display content of a map by arranging the symbol in a three-dimensional manner on the ground surface, referring to the attribute information, and corresponding to the arrangement of the feature; A display means for displaying the three-dimensional map determined by the means; the processing means; and a display position of a symbol marking a certain feature and an overlapping condition with another feature An overlapping state determination unit for determining; and the certain feature A map provided with a display position changing unit that translates the display position of the symbol in the height direction with respect to the ground surface when it is determined by the overlap state determination unit that the symbol to be marked is hidden by the other feature Display device. According to this application example, it is difficult to hide symbols while maintaining a three-dimensional model in which features are displayed in three dimensions. The symbol is, for example, a character or a mark. A mark is a symbol other than a character, such as a map symbol or a graphic mark. The storage of the map by the storage means may be temporary (volatile) or non-temporary (nonvolatile).

Application Example 2: The map display device according to Application Example 1, wherein the display position change unit translates the symbol outside the range determined by the overlap condition determination unit when hidden by the other feature. A map display device that determines the later position. According to this application example, the symbols are more difficult to hide.

Application Example 3: The map display device according to Application Example 2, in which the processing means arranges a mark indicating the symbol directly on the three-dimensional map together with the symbol translated by the display position changing unit. A map display device comprising a pre-translation position display unit. According to this application example, the original position of the symbol can be indicated.

Application example 4: A three-dimensional map 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 is stored. Storage means for performing; viewpoint setting means for setting a viewpoint in the three-dimensional space; using the three-dimensional map, features included in a map range defined by the set viewpoint as the feature information Processing means for determining a display content of a map by arranging the symbol in a three-dimensional manner on the ground surface, referring to the attribute information, and corresponding to the arrangement of the feature; Display means for displaying the three-dimensional map determined by the means; and the processing means determines at least some of the display positions of the symbols as the depression angle or azimuth angle changes Translate distance and height Map display device comprising a shown position changing unit. According to this application example, it is difficult to hide the symbols in the three-dimensional model while maintaining the three-dimensional model in an easily viewable state. “At least some of the symbols” include “symbols hidden in a three-dimensional model representing other features as the depression angle or azimuth changes,” and “predetermined distance” is “symbol 3”. This is because the symbol can be displayed if the distance is such that the state hidden in the dimensional model can be resolved.

  The present invention can be implemented in various forms other than the above. For example, it 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. A table showing the data structure of the symbol. The figure for demonstrating translation and rotation of a symbol. The figure which shows a mode that the position of the height direction of a character is changed.

Configuration of the map display system 10 (FIG. 1):
FIG. 1 shows the configuration of the map display system 10. 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. Further, the height direction (vertical direction) information may be expressed by, for example, a distance from the ground surface upward or a distance below 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 how the positions, types, etc. of the respective layers of the three-dimensional model are communicated by means of hierarchical moving means (stairs, escalators, elevators, etc.). The map database 56 may include network information used for route search. The control unit 54 includes a CPU, a ROM, and a RAM, and executes a program for transmitting map data. 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. 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 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 acquires the position coordinates at which the user's finger, a dedicated pen, or the like touches the liquid crystal screen and inputs the position 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 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.) in a three-dimensional space for changing the display range of the map ( Step S61). If the main control unit 22 determines that there is no input of the viewpoint in the three-dimensional space (step S61, NO), the main control unit 22 repeats step S61 and waits until there is an input. When the main control unit 22 determines that there is an input of a viewpoint in the three-dimensional space (step S61, YES), the main control unit 22 follows the input to display the three-dimensional model included in the map display range on the ground surface. And a character marking the feature (step S63). 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 each three-dimensional model on the ground surface, and arranges a symbol for marking the feature. A symbol is a character or the like that marks a feature. As shown to FIG. 3 (A) and (B), the feature displayed in this example is four of the buildings 90-93.

  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). As shown in FIG. 3, the building 90 is indicated by the letters “XX building”, the building 91 is indicated by “□□ hotel”, the building 92 is indicated by “XX hotel”, and the building 93 is indicated by the letters “ΔΔ building”. The

  FIG. 4 is a table showing the attribute data of the feature and the data structure of the symbol marking the feature. As shown in FIG. 4, this data structure includes an ID indicating a marked feature, a display reference point, a display angle offset amount, a rotation reference point, character information, format information, mark information, a feature type, and a display. Priority and grouping information. The ID is actually described by a serial number or the like, but in FIG. 4, “building 90” or the like is described for easy understanding of the explanation. The display reference point indicates the arrangement in the three-dimensional space of the reference point of the symbol display range. In the present embodiment, the symbol display range is defined by a rectangular model having no thickness, and the reference point of the display range is determined at the center of the rectangle. The offset amount of the display angle is for arranging symbols along the direction in order to mark a feature having a direction (such as a road or a river). The rotation reference point is a point that becomes the center of rotation when the symbol is rotated. In the present embodiment, the display reference point and the rotation reference point are matched. The character information is information for specifying a character when the symbol to be included includes the character. The format information is information for specifying the size, font, color, etc. of the character to be marked. The mark information is information for specifying the mark design when the symbol includes a mark. The mark referred to here is a symbol other than a character such as a map symbol or a graphic mark. The feature types are associated with famous names, general buildings, traffic features, natural features (such as rivers), and the like, and are information for determining display priority. In the present embodiment, the higher the priority is given above. The display priority is information that defines an exception of the display priority according to the “type of feature”. The grouping information is information for grouping characters and marks.

  FIG. 5 is a diagram for explaining the translation and rotation of symbols. FIG. 5 is a diagram of a three-dimensional model of the building 94 and a symbol marking the three-dimensional model as viewed from a direction orthogonal to the line-of-sight direction. As described above, since the display range of the symbol is defined by a rectangular model without thickness, it is indicated by a line segment in FIG. The position of the display reference point in the height direction is determined so that the entire display range of the symbol is always located above the ground even if it is rotated. That is, it is sufficient that the height of the reference point is at least half of the height of the symbol (the length of the rectangular side). In this embodiment, as shown in FIG. 5, the height of the center is made to coincide with half the height of the symbol. Furthermore, the character display range may be translated in the height direction as shown in FIG. In this embodiment, the range that can be translated upward in the height direction is a range that does not protrude from the display range of the marked feature, as shown in FIG. In other words, as shown in FIG. 5, the entire symbol display range is within the display range of the three-dimensional model as viewed from the viewpoint.

  When the depression angle and / or azimuth angle is changed, the main control unit 22 is configured so that the display range faces the changed viewpoint, that is, the rectangle defining the display range and the line-of-sight direction are orthogonal to each other. Rotate around the rotation reference point.

  Subsequently, the main control unit 22 determines whether there is a symbol hidden in the three-dimensional model (step S69). That is, it is determined whether a symbol that marks a certain feature is hidden by a three-dimensional model of another feature. Specifically, the main control unit 22 refers to the attribute information of the feature, arranges the shape and height three-dimensional model and the symbol, and hides it in the three-dimensional model according to the set depression angle and azimuth angle of the viewpoint. Determine the state of the symbol to be displayed. In this determination, the positional relationship between the three-dimensional model and the symbol with respect to the viewpoint set by inputting the depression angle and the azimuth angle is used. If it is determined that there is no symbol hidden in the three-dimensional model (step S69, NO), the process returns to step S61. For example, in the case shown in FIG. 3B, since there is no symbol hidden in the three-dimensional model, NO is determined in step S69.

  On the other hand, if the main control unit 22 determines that there is a symbol to be hidden in the three-dimensional model (step S69, YES), the main control unit 22 changes the position in the height direction of the symbol to hide it in the three-dimensional model of other features. A process for canceling the state is executed (step S71). And the main control part 22 returns to step S61, after changing the position of the height direction of the symbol hidden in step S71. However, the main control unit 22 does not change the position of the symbol if the state hidden by the three-dimensional model cannot be resolved even if the position of the symbol is changed.

  FIG. 6 is a diagram illustrating a state in which the position of the character in the height direction is changed. 6A is a display in which the depression angle is changed from FIG. 3B, and FIG. 6B is a display in which the azimuth angle is changed from FIG. 3B. In the case shown in FIG. 6 (A), the “□□ hotel” marking the building 91 is in the position of the rectangular rectangle shown in the figure at the stage where the rotation in step S67 is performed. It hides in the expressed building 90. In addition, the “XX hotel” that marks the building 92 is also hidden in the building 90. Therefore, in step S71, the main control unit 22 translates the positions in the height direction of “□□ hotel” and “XX hotel” vertically upward, as shown in FIG. The state where “□□ Hotel” and “XX Hotel” are hidden in the building 90 is eliminated. Regarding the position of the symbol after translation, the main control unit 22 arranges it a predetermined distance above the position determined by the shortest translation distance that can eliminate the hidden state. The reason why the main control unit 22 arranges the translated symbol by a predetermined distance is to prevent the translated symbol and the three-dimensional model that has hidden the symbol from being too close to each other.

  In the case shown in FIG. 6B, in the stage of step S67, “XX building” marking the building 90 is hidden in the building 93 and “□□ hotel” marking the building 91 is hidden in the building 92. End up. In step S71, the “□□ hotel” is translated upward in the height direction to eliminate the state where the “□□ hotel” is hidden in the building 92 as shown in FIG. On the other hand, the position of “XX building” is not translated. This is because even if the translation is performed within the display range of the building 90, the state hidden in the building 93 cannot be resolved. Naturally, if the translation is performed outside the display range of the building 90, the state can be eliminated. However, such a method is not adopted in the present embodiment because it may be difficult to understand which feature is marked.

  In FIG. 6, the original position of the symbol is indicated by a dashed rectangle. This rectangle may or may not be actually displayed. If displayed, the original position of the symbol can be indicated. If it is not displayed, the display can be simplified.

effect:
According to this embodiment, the state in which the symbols are hidden by the three-dimensional model can be eliminated without deforming the three-dimensional model. Of course, the symbols do not actually exist in the space represented by the map, but are added to make the map easier to understand. Therefore, if the symbol is easy to understand which feature is marked, it does not cause any particular problem no matter where it is placed. However, when the symbol is arranged near the ground like the display reference point of this embodiment, the smaller the depression angle, the easier it is to hide in the three-dimensional model. On the other hand, when representing a feature using a three-dimensional model, the display range of the feature expands in the height direction as the depression angle decreases. The method described as an embodiment utilizes such a three-dimensional display characteristic. Moreover, since the movement is made only in the height direction, the processing load is light and suitable for execution every time the map display is switched.

  In the present embodiment, the position in the height direction is also translated for the symbol that marks the two-dimensional model. Although the range in which translation is possible is narrower than that of a three-dimensional model, the above-described effect is exhibited.

Correspondence between embodiment and application example:
Step S69 is equivalent to software for realizing an overlapping degree determination unit, and step S71 is software for realizing a display position changing unit. The CPU 24 corresponds to hardware resources for realizing processing means, the RAM 26 for storage means, and the touch panel 36 for display means.

Other embodiments:
In the example shown in FIG. 5, the range in which the main control unit 22 can translate the symbol upward in the height direction is a range that does not protrude from the display range of the marked feature, but is not limited thereto. The main control unit 22 may include a range in which the symbol can be translated upward in the height direction including a position exceeding the three-dimensional model that hides the symbol. Specifically, when the main control unit 22 determines that the symbol is hidden by the three-dimensional model, the main control unit 22 refers to the height information of the hidden three-dimensional model and arranges the symbol on the top. good. By doing so, the symbol hidden by the three-dimensional model is displayed so as to be visible, and since the symbol is translated in the height direction, the position of the symbol on the three-dimensional map can be easily estimated. .
The main control unit 22 may arrange a mark indicating just below the translated symbol, instead of displaying a broken-line rectangle. For example, an arrow may be used as this mark. In this way, even if the translated position of the symbol hidden by the three-dimensional model protrudes from the marked feature, the position of the base symbol can be estimated by referring to this mark. There is an effect that can be done.
The position after translation in the height direction may be a method different from the embodiment. For example, the main control unit 22 may translate the position as high as possible within the display range of the three-dimensional model.
As described above, “if the symbol is easy to understand which feature is marked, it will not cause a particular problem no matter where it is placed”, the main control unit 22 adds the symbol in the horizontal direction in addition to the height direction. Or may be translated outside the display range of the three-dimensional model. For example, it may be arranged so that at least a part of the symbol display range is located within the display range of the three-dimensional model.
In the case of translation outside the display range of the three-dimensional model, the main control unit 22 may make it easy to understand which feature is marked by using a lead line or the like.
The direction of translation in the height direction may be downward. For example, when a viaduct is represented by a three-dimensional model, the three-dimensional model may conceal symbols of other features. In this case, the main control unit 22 may be able to eliminate the state by translating the hidden symbol downward. As shown in FIG. 5, the downward translation is preferably within the range where the entire symbol display range is located above the ground. This is because the range located below the ground is hidden by the ground.
When the symbol becomes hidden as the viewpoint distance or scale changes, the state may be eliminated using the method of the previous embodiment.

The main control unit 22 may translate symbols that are not hidden and / or symbols that cannot be resolved even if translated.
The rotation of the symbol does not necessarily have to face the viewpoint. For example, the main control unit 22 may select an angle closest to a directly facing state from angles of a predetermined angle (for example, 15 °) and rotate the angle so as to be the angle. In this way, the processing load is reduced. For example, the current depression angle and azimuth angle may be substituted into a predetermined map, or the current depression angle and azimuth direction may be selected, for example, by selecting “the one closest to the directly facing state from the predetermined angle increments”. You may calculate from the corner. Since the elevation angle of the normal vector of the symbol display range is equal to the depression angle, it can be easily obtained.
The main control unit 22 may use a symbol marking an underground structure such as an underground shopping street as a translation target in the height direction.
The device to be incorporated may not be a smartphone. For example, various types such as a normal mobile phone, a tablet-type personal computer, a stationary personal computer (desktop type or notebook type), a car navigation device, and a head-mounted display are conceivable.
The hardware for displaying the map does not have to be a liquid crystal display. 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 (6)

Storage means for storing a three-dimensional map including ground surface information representing a ground surface in three-dimensional space, feature information including shape and height information of the feature, and attribute information including a symbol marking the feature; ,
Viewpoint setting means for setting a viewpoint in the three-dimensional space;
Using the 3D map, the features included in the map range defined by the set viewpoint are three-dimensionally arranged on the ground surface based on the feature information, referring to the attribute information, Processing means for determining display contents of the map by arranging the symbols in correspondence with the arrangement of the features;
A map display device comprising: display means for displaying the three-dimensional map determined by the processing means,
The processing means includes
An overlapping state determination unit for determining the overlapping state between a display position of a symbol marking a certain feature and another feature;
A display position that translates the display position of the symbol in the height direction with respect to the ground surface when the overlap determining unit determines that the symbol marking the certain feature is hidden by the other feature A map display device comprising a change unit. The map display device according to claim 1,
When the display position changing unit is hidden by the other feature, the position of the symbol after translation is determined to be outside the range determined by the overlapping state determining unit. The map display device according to claim 2,
The processing means includes: a pre-translational position display unit that arranges a mark indicating a position directly below the symbol along with the symbol translated by the display position changing unit on the three-dimensional map. The storage means stores a three-dimensional map including ground surface information representing the ground surface in a three-dimensional space, feature information including feature shape and height information, and attribute information including a symbol marking the feature. And
A viewpoint setting means sets a viewpoint in the three-dimensional space;
The processing means uses the three-dimensional map to three-dimensionally arrange the features included in the map range defined by the set viewpoint on the ground surface based on the feature information, and the attribute information Referring to the arrangement of the feature, the display content of the map is determined by arranging the symbol,
A display means, wherein the display means displays the three-dimensional map determined by the processing means,
The processing means includes
Determine the overlap between the display position of the symbol marking a certain feature and other features,
A map display method for translating a display position of the symbol in a height direction with respect to the ground surface when it is determined that the symbol marking the certain feature is hidden by the other feature. The storage means stores a three-dimensional map including ground surface information representing the ground surface in a three-dimensional space, feature information including feature shape and height information, and attribute information including a symbol marking the feature. And
A viewpoint setting means sets a viewpoint in the three-dimensional space;
The processing means uses the three-dimensional map to three-dimensionally arrange the features included in the map range defined by the set viewpoint on the ground surface based on the feature information, and the attribute information Referring to the arrangement of the feature, the display content of the map is determined by arranging the symbol,
A map display method for causing a computer comprising the storage means, the viewpoint setting means, the processing means, and the display means to display the three-dimensional map determined by the processing means. And
The processing means is
Determine the overlap between the display position of the symbol marking a certain feature and other features,
A map display program for translating the display position of the symbol in the height direction with respect to the ground surface when it is determined that the symbol marking the certain feature is hidden by the other feature. Storage means for storing a three-dimensional map including ground surface information representing a ground surface in three-dimensional space, feature information including shape and height information of the feature, and attribute information including a symbol marking the feature; ,
Viewpoint setting means for setting a viewpoint in the three-dimensional space;
Using the 3D map, the features included in the map range defined by the set viewpoint are three-dimensionally arranged on the ground surface based on the feature information, referring to the attribute information, Processing means for determining display contents of the map by arranging the symbols in correspondence with the arrangement of the features;
A map display device comprising: display means for displaying the three-dimensional map determined by the processing means,
The said display means is a map display apparatus provided with the display position change part which translates the display position of at least one part of the said symbol to a predetermined distance and a height direction with a change of a depression angle or an azimuth.

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