JP3851887B2 - Stereoscopic map display apparatus and method using stereo photography - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a stereoscopic map display apparatus and method that enable stereoscopic viewing of a map with the naked eye using a stereo photography method.
[0002]
[Prior art]
In general, a map displays the position information of a terrain or a feature on a piece of paper, but what is called a terrain map includes two-dimensional information such as terrain and features as well as the contours of the terrain. It also includes height information (3D information). Further, in the topographic map, the height information is generally expressed by contour lines.
[0003]
Contour lines of topographic maps are created by photogrammetry. Photogrammetry is based on aerial photographs taken while shifting the position, using the principle of stereoscopic photography, the position difference (parallax) of the same feature in a pair of photographs is measured with a plotter, and the feature has a high Get information about
In recent years, three-dimensional maps called 3D maps having three-dimensional information different from contour line representations of features possessed by computer technology have been actively created in map creation. Typical examples include a bird's eye view and a stereoscopic map. A bird's-eye view is a computer that uses a computer to calculate and draw a scene looking at the topography from an angle. In addition, the stereoscopic map is intended to be three-dimensionally expressed using computer technology using the conventionally known stereoscopic vision principle. Furthermore, there are various methods for implementing three-dimensional representation, and representative methods include an anaglyph method using extra-colored glasses, a method using polarized glasses, a stereo photography method using two maps with naked eyes, There is a hologram method.
[0004]
[Non-Patent Document 1]
“General View of Geodesy”, Geodetic Society of Japan, 1974, p. 386
[0005]
[Problems to be solved by the invention]
Of the topographic maps described above, the present invention relates to a stereoscopic map using a stereo photography system. A method of using a stereoscopic map by the stereo photography method will be described with reference to FIGS. 15 to 16. First, as shown in FIG. 15, a photograph 150 in which the subject A 152 and the subject B 153 are photographed and a photograph 151 in which the subject A 152 and the subject B 153 are photographed from a point shifted by a certain distance from the photographing point of the photograph 150 are arranged on the left and right. To do. At this time, the distance 157 between the subject A and the subject B, which is the distance between the subject A 155 and the subject B 156 photographed in the photograph 151, and the distance 154 between the subject A and the subject B photographed in the photograph 150 depend on the shooting angle. (In the following description, the difference between the distance 154 between the subject A and the subject B and the distance 157 between the subject A and the subject B is referred to as a shift amount).
[0006]
Next, as shown in FIG. 16, when the photograph 150 and the photograph 151 arranged on the left and right shown in FIG. By focusing the eye 160 on a possible point, the subject A161 and the subject B162 taken in the photograph 150 and the photograph 151 can be viewed stereoscopically by the principle of stereoscopic video.
[0007]
The subject A161 is photographed at the intersection of the line of sight of the left eye 160 with respect to the subject A161 and the photograph 150 while the subject A161 and the subject B162 are actually viewed from the viewpoint of the eye 160 (the focus of the eye 160 remains unchanged). Similarly, the photograph 150 in which the subject B162 is photographed at the intersection of the line of sight of the left eye 160 with respect to the subject B162 and the photograph 150, and the line of sight from the right eye 160 to the subject A161 and subject B162 and the photograph 151 are respectively photographed. When A 161 and a photograph 151 taken of subject B 162 are inserted in the middle of the line of sight to subject A 161 and subject B 162 of left eye 160 and in the middle of the line of sight of subject A 161 and subject B 162 of right eye 160, respectively. , Subject A161 and photos 150 and 151 It is possible to recognize the object B162 as a stereoscopic image (actually the image in a state of viewing the object A161 and subject B162). This is based on the principle of a stereoscopic image that is recognized as a stereoscopic image by the difference (shift amount) between the distance 154 between the subject A and the subject B projected in the left eye 160 and the distance 157 between the subject A and the subject B projected in the right eye 160. by.
[0008]
The problem with the 3D map using the conventional stereo photography method described above is that when using a map, two maps must be paired and viewed stereoscopically with both eyes, so the map must be within the pupil width of both eyes. In a large map, it is necessary to devise by making a reduced copy or the like, which means that the planar size is limited and it is not practical.
[0009]
The present invention is intended to solve such a conventional problem, and an object of the present invention is to release the range of field of view from a stereoscopic map by a stereo photography method.
[0010]
[Means for Solving the Problems]
  The invention described in claim 1A stereoscopic map display device that displays a pair of map information that enables autostereoscopic viewing based on parallax on a display screen, the map information being converted into electronic data to be displayed on the display screen, Corresponding position with coordinatesFirst storage means for storing first map information;Displayed on the display screenBetween the first map informationEnable autostereoscopic viewingSo that parallax occursThe coordinates of each point included in the first map information are shifted according to the height information of each point.Second storage means for storing second map information;SaidA first display control means for displaying one of the first and second map information on the display screen; and the one map information displayed on the display screen by the first display control means. A designation unit for designating an arbitrary location of the map, and on the display screen, the other side corresponding to the partial region beside the partial region on the one map information corresponding to the location designated by the designation unit Second display control means for displaying the partial areas on the map information in parallel based on the parallax between the two partial areas displayed in parallelnaked eyeThe stereoscopic map display device is characterized by enabling stereoscopic viewing.
  The invention according to claim 2 is a third storage means for storing the relationship between the height information and the shift amount of the coordinates corresponding to the height information for obtaining parallax that enables autostereoscopic viewing; The shift amount corresponding to the height information of each point included in the first map information is acquired from the third storage means, and each point of the first map information is acquired by the acquired shift amount. 2. The stereoscopic map display device according to claim 1, further comprising: a shift correction processing unit that shifts each of the coordinates to generate the second map information.
[0011]
  Claim3The described inventionThe height information is a difference from a minimum altitude at each point included in the first map information.It is characterized byClaim 1 or 2It is a stereoscopic vision map display apparatus of description.
  Claim4The described inventionSaidFirst map information, andSaidThe second map informationAccordingcontourIncluding information for displaying on the display screenIt is characterized byAny one of Claims 1 thru | or 3It is a stereoscopic vision map display apparatus of description.
[0012]
  According to a fifth aspect of the present invention, the first map information and the second map information include information for displaying on the display screen a staged chart color-coded according to a difference from a minimum altitude. The stereoscopic map display device according to claim 1, wherein the stereoscopic map display device is a display device.
  According to a sixth aspect of the present invention, a pair of map information that enables autostereoscopic viewing based on parallax is displayed on a display screen of a computer.DoA method of displaying a stereoscopic map by a computer, said computerButThe first map information that is converted into electronic data to be displayed on the display screen and that associates the position of each point with the coordinates is stored in the first storage means of the computer.DoThe coordinates of each point included in the first map information are set so that a parallax that enables autostereoscopic viewing occurs between the step and the first map information displayed on the display screen. Generating second map information by shifting according to the height information, and storing the second map information in the second storage means of the computerDoStep and stored in the first storage meansSaidDisplay the first map information on the display screenDoStep and displayed on the display screenSaidWhen an arbitrary location on the first map information is designated by the designation means of the computer, it corresponds to the partial region next to the partial region on the first map information corresponding to the designated location. Display partial areas on the second map information in parallelDoStep and runDoThus, the stereoscopic map display method is characterized by enabling autostereoscopic viewing based on parallax between the two partial areas displayed in parallel.
[0013]
  Claim7The described inventionThe height information is a difference from a minimum altitude at each point included in the first map information.The claim of claim6This is the stereoscopic map display method described.
  Claim8The described inventionSaidFirst map information, andSaidThe second map informationAccordingcontourIncluding information for displaying on the display screenIt is characterized byClaim 6 or Claim 7This is the stereoscopic map display method described.
[0014]
  Claim9The described inventionSaidFirst map information, andSaidThe second map information is a multi-colored chart according to the difference from the minimum elevationContains information for displaying on the display screenIt is characterized byClaim 6 or Claim 7This is the stereoscopic map display method described.
  According to the first aspect of the present invention, a partial map is displayed by the second display control means on the place designated by the designation means for an arbitrary place on the map displayed on the display screen by the first display control means. Is displayed, and the map displayed by the first display control means and the map displayed by the second display control means have the effect of enabling stereoscopic viewing at any location on the map. Claims 2 to5According to the invention, the same operation and effect as those of the invention of claim 1 can be obtained.
[0015]
  According to the invention of claim 6, the first map information is displayed on the display screen.DoStep and the second map information corresponding to the designated location are displayed in parallel next to the partial area designated by the designation means on the first map information displayed on the display screenDoStep andThat the computer runsThus, there is an effect that stereoscopic viewing is possible at an arbitrary place on the map. Further, according to the seventh to ninth aspects, the same effects and operations as those of the sixth aspect can be obtained.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 14 is a configuration of a computer that realizes the map display device according to the embodiment of the present invention. In accordance with the program instructions stored on the memory 141, the CPU 140 creates map data of a base diagram, a base diagram A, and a base diagram B. The created map data is once stored in the external storage device 144 (first storage means and second storage means). When the creation of the map data is completed, the base diagram A is displayed on the display which is the output device 143 (first display control means), and the apparatus waits for an instruction (designation means) from the mouse which is the input device 142. When an instruction is received from a mouse or the like, an interrupt command is issued to the CPU 140, and the partial area of the base diagram B corresponding to the instructed location is displayed on the display as the output device 143 (second display control means).
[0017]
Map data for creating a base map based on processing altitude data for adding step color data to the base map data with reference to the table for color stage corresponding to the specific height stored in the memory 141 at the time of creation Certain numerical map data and altitude data necessary for stage color processing and shift correction processing are stored in the portable storage medium 146. Also, the specific height required for the gradation processing and the table for color gradation corresponding to the specific height (FIG. 5) and the shift amount corresponding to the specific height required for the shift correction processing (FIG. 10) are as follows. , Stored in the memory 141, and referred to by the CPU 140 when the base drawing is staged or when the shift correction processing is performed.
[0018]
FIG. 1 is a flowchart showing an outline of an embodiment of the present invention. In the present invention, it is necessary to prepare a pair of stereo maps (base A display window 123 and base B display window 124 shown in FIG. 13) used when operating on the display. Therefore, in step S100, map information that is the basis of the pair of stereo maps is created. Hereinafter, the map information is referred to as a base map, and the map that has been subjected to the stage coloring process for adding color information corresponding to the height based on the height information of the features is referred to as a base chart A. Further, a base map B is obtained by calculating a shift amount based on the height information of the feature with respect to the base diagram A and performing a shift correction process for reflecting the shift amount in the map data of the base map A. . In the embodiment of the present invention, “Tokyo-5” of the CD version spatial data base / numerical map 2500 issued by the Geographical Survey Institute is used as the original data of the base map. The CD version spatial data base / numerical map 2500 has a unit area of 2 km x 1.5 km subdivision, and “Tokyo-5” includes Toshima Ward, Bunkyo Ward, Shinjuku Ward, Chiyoda Ward, Shibuya Ward, Chuo 56 pieces of vector map data relating to wards and minato wards are stored. The spatial data base / numerical map 2500 reads the vector map data into the memory 141 as the portable storage medium 146 via the medium driving device 145, the external storage device 144, or the network (step S101). The data divided into 56 sections of vector map data, which are divided and recorded, are combined into a single surface and converted into a bitmap data format to create base chart data, which is stored in the external storage device 144 (step) S100). The map data created in step S100 is shown in FIG.
[0019]
The altitude data is read from the portable storage medium 146 or the like to the memory 141 (step S103), and the step information corresponding to the specific altitude (difference from the minimum altitude in the map data to be used) is added to the base map data created in step S100. It is added and stored in the external storage device 144 (step S102). In the gradation processing, the present invention uses a specific height instead of an altitude as the height information. This is because, when creating a stage chart for an area such as Nagano City having a minimum altitude of several hundreds of meters, a stage process below the minimum altitude is not necessary. The map data created in step S102 is set as a base diagram A. In the embodiment of the present invention, the CD version numerical map 50m mesh elevation data is used as the elevation data issued by the Geographical Survey Institute. This is composed of 200x200 elevation data obtained by dividing one topographic map of 1 / 25,000 into vertical and horizontal intervals of about 50 m.
[0020]
In step S104, the shift amount is calculated by the CPU 140 according to the specific height for the map data of the base diagram A created in step S102, the shift correction process is executed, and the result is stored in the external storage device 144 or the like. To do. The map data created in step S104 is set as a base diagram B.
[0021]
When the basic drawing A and the basic drawing B are created by step S102 and step S104, respectively, the basic drawing A is displayed on the display as the output device 143 (step S105), and input by the mouse 125 as the input device 142 or the like. The instruction is waited (step S106). The entire base A may be displayed on one screen on the display, or only a part of the base A may be displayed and dragged with the mouse 125 or the like to shift to the position of the map the user wants to see. May be.
[0022]
When the mouse 125 or the like that is the input device 142 is used to specify a point on the screen on which a stereoscopic map is to be displayed by clicking, the CPU 140 partially displays the base diagram B in a portion corresponding to the coordinates of the designated screen. Display processing for display is performed (step S108 and the base B display window 124 shown in FIG. 12). At this time, considering the visibility of the stereoscopic map, the size of the window frame of the base B display window 124 is the same as the base A display window 123 on the left side of the screen pointed by the mouse 125. A large window frame is displayed. Further, a window frame is also displayed on the displayed base B display window 124 for the same reason. The user of the stereoscopic map can use the periphery of the pointed map as a stereoscopic map by viewing the basic map A display window 123 and the basic map B display window 124 with both eyes.
[0023]
FIG. 4 is a flowchart showing details of the gradation processing in step S102 of FIG. In step 40, the altitude corresponding to each coordinate of the map data of the base map created in step S100 is obtained from the altitude data read in step S103. The map data of the base map and the CD version numerical map 50m mesh altitude data read in step S103 are stored in the memory 141, and the CPU 140 performs a process of comparing the altitude corresponding to the coordinates of the map data of all the base maps. Calculate the altitude.
[0024]
In step S41, one coordinate data is selected from the map data of the base map created in step S100, and the specific height is calculated by taking the difference from the minimum altitude calculated in step S40 (step S42). When the specific height is calculated in step S42, the gradation data based on the gradation table for the color corresponding to the specific height and the specific height shown in FIG. Is added to the map data (step S44).
[0025]
Here, in this embodiment, for each coordinate (x, y) corresponding to an interval of 50 m in the target area, the stage is colored with a circle having a radius r proportional to the specific height. The unit of coordinates (x, y) in the step color and displacement calculation is a pixel (pic). In the case of the example, 1 pic = 0.29 mm. In the embodiment, since the base map is created on a scale of 1 / 20,000 scale for the CD version spatial data base / numerical map 2500, a small section (2 km × 1.5 km) of the CD version spatial data base / numerical map 2500 is displayed on the display. Above, the image is drawn with a size of 100 mm × 75 mm, and the pixel unit is 345 pic × 259 pic. From the above, when displaying the base chart A in which the base chart is staged on the display, if the specific height is h, the coordinates (x, y) corresponding to the 50 m interval of the target area are shown in FIG. From the correspondence table, the color corresponding to the specific height is displayed with a circle of radius r = h / 10 (pic). FIG. 3 shows a diagram in which only yellow data is displayed on the display according to the table of FIG. 5 according to the specific height from the map data of the base diagram shown in FIG. Further, FIG. 6 shows a staged chroma chart obtained by performing staged chroma processing on the base chart (FIG. 2).
[0026]
When the gradation processing is completed, it is determined whether or not the gradation processing has been performed on all coordinates of the base data (step S45). If there is map data that has not yet been subjected to the gradation processing, the step is performed. Returning to S41, the stage color processing is performed. If the gradation processing has been performed for all the map data, the gradation processing is terminated (step S46), and the processing shifts to the displacement correction processing (step S104).
[0027]
FIG. 7 is a flowchart showing details of the shift correction process in step S104 of FIG. A specific coordinate is selected by the CPU 140 from the map data of the base A created in step S102 developed in the memory 141 (step S70), and a specific height corresponding to the selected coordinate is calculated (step S71). As shown in FIG. 10, the deviation amount corresponding to the specific height previously calculated and tabulated and stored in the memory 141 is reflected in the coordinates selected in step S70 (the coordinates are shifted by the deviation amount). ) The deviation amount shown in FIG. 10 is the deviation amount of the basic figure B with respect to the basic figure A when the basic figure B is displayed as the basic figure B display window 124 on the right side of the basic figure A display window 123 as shown in FIG. In the case of a positive value, it is shifted in the minus direction of the x-axis when a coordinate with the lower left corner of the display screen as the origin is considered. The coordinate data reflecting the shift amount is sequentially stored as the map data of the base diagram B in the external storage device 144.
[0028]
When the shift correction processing is completed, it is determined whether the shift correction processing has been performed on all the coordinates of the map data (step S74), and if there is map data that has not yet been subjected to the shift correction processing. Returning to step S70, shift correction processing is performed. When the shift correction process is completed for all the map data, the shift correction process is terminated (step S75), and the process proceeds to a process of displaying the map data of the base diagram A on the display as the output device 143 (step S105).
[0029]
Here, an outline of calculation of the shift correction amount corresponding to the specific height shown in FIG. 10 used in step S72 will be described with reference to FIGS.
As shown in FIG. 8, when the relative positions of the two points A and B are observed from the observation points O1 and O2 (in the case of photogrammetry), on a plane at a certain distance c from the observation points O1 and O2. If a photo is placed, the direction angles from the observation points O1 and O2 to the point A are α1 and α2, respectively, and h1 and h2 are the main photo points,
tan α1 = a1h1 / c
tan α2 = a2h2 / c
The relationship holds.
If the actual distance between the two observation points O1 and O2 is b,
b / h = (h1a1 + h2a2) / c
b / (h + Δh) = (h1b1 + h2b2) / c
It becomes. Here, for the sake of simplicity, consider the case where a1 and b1 match.
a2b2≈b / h · c / h · Δh
It becomes.
Therefore, in the case of photogrammetry, an object having an actual elevation difference (specific height) in a pair of photographs (or eyes) is dp where a1 = b1 at the observation point O1 and dp at the observation point O2. = A2-b2 At this time, if the specific height of A and B is Δh and the scale factor is m,
Δh = h / b · m · dp
There is a relationship.
[0030]
In the embodiment of the present invention, as shown in FIG. 9, the eye width (b shown in FIG. 8) is bm = 200 pic (58 mm), the standard visual distance of the map (h shown in FIG. 8) is hm = 400 mm, and the PC monitor Assuming that the scale factor of the map on the (display) is m = 20000 and the shift amount of the base diagram B with respect to the base diagram A is dp (mm), the recognized relative height Δh is
Δh = (hm / bm) · m · dp
The relationship between the shift amount dp of the base diagrams A and B and the actual specific height is as follows.
sd = s2 / 4-s3
In addition, the deviation amount when the specific height of the feature is 80 m or more is
sd = 18 + s2 / 40-s3
Is given in. Here, sd is a shift amount in the horizontal direction of the display (unit is pic), and s2 is a specific height of the feature (unit is m). Further, s3 is a constant shift amount (10 pic). FIG. 11 shows a case where the map data of the base diagram B described above is displayed on the display as the output device 143.
[0031]
FIG. 12 is a conceptual diagram when the basic diagram A and the basic diagram B are displayed on the display as the output device 143. FIG. 13 shows a display example when the basic diagram A and the basic diagram B are actually displayed on the display. The base drawings A and B are displayed on the display so as to overlap each other. Immediately before the base A is displayed on the display in step S105 of FIG. 1, the base B is set to the display window width setting 130 in order to display the base B display window 124 in a pair with the base A display window 123. A process of translating the x-coordinate by the set value in the direction in which the base B display window 124 is displayed is stored in the memory 141 and displayed on the display. Thereafter, the base diagram A is displayed on the display. In this processing, the base diagram B may be stored in the memory 141 and not displayed on the screen. When an instruction from the mouse 125 described later is given, the corresponding base in the memory 141 is stored. Processing for displaying the part of FIG. Further, after the instruction from the mouse 125 is given, a process of translating the x coordinate by the value set in the display window width setting 130 in the direction in which the base B display window 124 is displayed for the corresponding base B portion. May be displayed on the display.
[0032]
When there is no external input by clicking the mouse 125 or the like as the input device 142 in the initial screen state or the like, only the base diagram A121 is displayed (S106). Here, the widths of the display windows of the base A display window 123 and the base B display window 124 are set by the user in the display window width setting unit 130 shown in FIG. In this embodiment, 200 pic is set as the initial value. In the embodiment, the display window size is determined at a ratio of 1: 2 between the display horizontal width and the display vertical width. Therefore, when the initial value of the horizontal width of the display window is 200 pic, the initial value of the vertical width of the display window is 400 pic. However, the ratio between the horizontal width and the vertical width of the display window is not limited to 1: 2. When the user clicks and designates an arbitrary point of the base diagram A to be viewed as a stereoscopic map with the mouse 125 or the like, the display on the display is refreshed and the base diagram B is displayed. A display process is performed on a portion other than the display window 124 in FIG. Alternatively, after the display on the display is refreshed and the base A is displayed on the display, the base B of the corresponding part designated by the mouse 125 or the like may be displayed. As a result, a part of the base drawing B corresponding to the designated base drawing A is displayed on the base drawing B display window 124, the base drawing A window is opened, and the base drawing A window (base drawing B display window 124) is displayed. It becomes possible to see the base diagram B via. A window frame is displayed on the base B display window 124, and a window frame having the same size as this window frame is also displayed on the base A display window. In addition, the entire displayed map (base diagram A 121, base diagram A display window 122, base diagram B display window 123) may be moved to a position where the user can easily see by dragging the mouse 125. Then, the base B display window 122 may be displayed after the place where the stereoscopic view on the base A 121 is desired to be moved to a position that is easy for the user to see by dragging the mouse 125. The user can view a stereoscopic map of a place on the base map arbitrarily designated by viewing the base window A display window 123 and the base window B display window 124 with both eyes.
[0033]
Furthermore, when it is desired to use a three-dimensional map for a point on a different base A, the display of the base A display window 123 and the base B is displayed in the same manner as described above by clicking the place to be used with the mouse 125 or the like. A window 124 is displayed. Therefore, the user does not need to prepare a pair of paper maps for each desired map as in the prior art, and simply indicates the desired point on the map displayed on the display with the mouse 125 or the like. The stereoscopic map is displayed on the screen, and the stereoscopic map can be easily used. FIG. 13 is a diagram when the map shown in FIG. 12 according to the embodiment of the present invention is actually displayed on the display.
[0034]
In the above description, in the embodiment of the present invention, vector map data is used as the original data of the base map, such as the CD version spatial data base / numerical map 2500 issued by the Geographical Survey Institute. Alternatively, raster numerical map data may be used, or data obtained by digitizing an old paper map by means of a scanner or the like may be used. In addition, a staged chroma chart that has been staged according to the specific height (altitude) is used in the base diagram A, but the staged chroma process is not necessarily required in the present invention. In order to improve the three-dimensional visual effect, an absolute value display of elevation such as contour lines may be used. Of course, the present invention can realize a stereoscopic map that can be stereoscopically viewed even when staged color processing or contour lines are not used. Further, the arrangement order of the base A display window 123 and the base B display window 124 is not limited to the order shown in FIG. The base B display window 124 may be displayed on the left side of the base A display window 123. In this case, when the deviation correction process of the base diagram B with respect to the base diagram A is a positive value according to the table shown in FIG. However, it can be easily realized by shifting in the positive direction of the x-axis.
[0035]
In FIG. 12, the base diagram A121 is displayed on the entire screen, and when the mouse 125 or the like is instructed, the base diagram B display window 124 is displayed. However, the base diagram B122 is displayed on the entire screen. In addition, when there is an instruction from the mouse 125 or the like, the display window 123 of the base diagram A may be displayed.
[0036]
Further, the output device 143 and the input device 142 displayed on the display do not need to be configured as a single device as shown in FIG. 14, and the output device 143 and the input device 142 are connected via a telecommunication network such as the network 148. It may be an output device and an input device.
[0037]
【The invention's effect】
As described above, the electronic stereoscopic map according to the stereo photographic method of the present invention displays a pair of maps necessary for the stereo photographic method by designating an arbitrary place displayed on the display. Therefore, it is possible to use a stereoscopic map based on the stereo photography method for an arbitrary place displayed on the display. In addition, it is easy to specify the place you want to see by displaying on the display, no matter how large a map (wide range map), by being freed from the limitation of the range of field of view in the conventional stereoscopic map by paper. It is possible to provide a stereoscopic map that can be viewed as a stereoscopic map.
[Brief description of the drawings]
FIG. 1 is a flowchart of an embodiment of the present invention.
FIG. 2 is a basic diagram created in an embodiment of the present invention.
FIG. 3 is a stage chromatic diagram of a specific elevation created in the embodiment of the present invention.
FIG. 4 is a flowchart for creating a stage chroma diagram according to the embodiment of the present invention.
FIG. 5 is a diagram illustrating a coloring table with respect to a specific height.
FIG. 6 is a diagram showing a base diagram A created in the embodiment of the present invention.
FIG. 7 is a flowchart for creating a shift diagram according to the embodiment of the present invention.
FIG. 8 is a diagram showing an outline of a body photograph.
FIG. 9 is a diagram used for calculating a deviation amount.
FIG. 10 is a diagram showing a table of deviation amounts with respect to specific heights.
FIG. 11 is a diagram showing a base diagram B obtained by shifting FIG. 6;
FIG. 12 is a diagram showing an embodiment of the present invention.
FIG. 13 is a diagram showing the screen of FIG.
FIG. 14 is a circuit diagram used in the embodiment of the present invention.
FIG. 15 is a diagram of a stereo photograph.
FIG. 16 is a top view when a stereo photograph is used.
[Explanation of symbols]
120 ... Display
121 ... Base A
122 ... Basic drawing B
123 ... Base A display window
124 ... Base B display window
125 ... Mouse
140 ... CPU
141... Memory
142 ... Input device
143 ... Output device
144: External storage device
145... Medium driving device
146... Portable storage device
147 ... Network connection device
148 ... Network
149 ... Bus

Claims (9)

A stereoscopic map display device that displays a pair of map information that enables autostereoscopic viewing based on parallax on a display screen,
Map information converted into electronic data to be displayed on the display screen, and storing first map information in which the position of each point is associated with coordinates;
The coordinates of each point included in the first map information are such that the height of each point is such that a parallax that enables autostereoscopic viewing occurs with the first map information displayed on the display screen. Second storage means for storing second map information shifted according to the information;
First display control means for displaying one of the first and second map information on the display screen;
Designation means for designating an arbitrary location on the one map information displayed on the display screen by the first display control means;
On the display screen, a second partial area on the other map information corresponding to the partial area is displayed side by side next to the partial area on the one map information corresponding to the place designated by the designation means. Display control means,
A stereoscopic map display device characterized by enabling autostereoscopic viewing based on parallax between two partial regions displayed in parallel. A third storage means for storing a relationship between the height information and a shift amount of coordinates corresponding to the height information for obtaining parallax that enables autostereoscopic viewing;
The shift amount corresponding to the height information of each point included in the first map information is acquired from the third storage means, and each point of the first map information is acquired by the acquired shift amount. Shift correction processing means for generating the second map information by shifting each of the coordinates of
The stereoscopic map display device according to claim 1, further comprising: 3. The stereoscopic map display device according to claim 1, wherein the height information is a difference from a minimum altitude at each point included in the first map information. The first map information and the second map information include information for displaying contour lines according to altitude on the display screen. The stereoscopic map display device described. The first map information and the second map information include information for displaying on the display screen a staged chart color-coded according to a difference from a minimum altitude. The stereoscopic map display device according to any one of 1 to 3. A computer-aided stereoscopic map display method for displaying on a computer display screen a pair of map information that enables autostereoscopic viewing based on parallax,
The computer is
A electronic data is map information to be displayed on said display screen, comprising the steps of: a first map information and the position of each point in correspondence with the coordinates, stored in the first storage means of the computer,
The coordinates of each point included in the first map information are set to the height of each point so that a parallax that enables autostereoscopic viewing with the first map information displayed on the display screen is generated. Shifting according to the information to create the second map information;
And storing the map information of the second to the second storage means of the computer,
And displaying the first map information stored in the first storage unit on the display screen,
If any location on said display said first map information is displayed on the screen is specified by the specified means of the computer, the horizontal portion region on the first map information corresponding to the location the designated And displaying in parallel the partial areas on the second map information corresponding to the partial areas;
By executing stereoscopic map display method characterized by allowing the autostereoscopic based on the disparity between the parallel displayed two partial regions. The stereoscopic map display method according to claim 6, wherein the height information is a difference from a minimum altitude at each point included in the first map information. 8. The three-dimensional object according to claim 6, wherein the first map information and the second map information include information for displaying a contour line corresponding to an altitude on the display screen. Visual map display method. The first map information and the second map information include information for displaying on the display screen a staged chart color-coded according to a difference from a minimum altitude. The stereoscopic map display method according to claim 6 or 7.

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