Map display apparatus
A map display device and map technology, which are applied in measurement devices, image data processing, 3D image processing and other directions, can solve problems such as difficulties, and achieve the effect of preventing jaggies and having high practical value.
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Embodiment approach 1
[0041] Image 6 It is a block diagram showing part of the configuration of the map display device according to Embodiment 1 of the present invention.
[0042] This map display device is a device that generates a three-dimensional image from digitized map data and displays the map on a screen, and includes a map data storage unit 101 that stores map data such as position information and altitude information of objects displayed on the screen. Obtain the map data from the map data storage unit 101, and generate the map drawing data generating unit 102 of the map drawing data such as the shape data of the object; the map drawing data generated in the above-mentioned map data generating unit is subjected to drawing processing, and generate and display on the screen The rendering unit 103 of the image in the image; the display unit 104 that displays the image generated by the rendering unit 103 on a real screen such as a monitor.
[0043] The map data storage unit 101 stores longi...
Embodiment approach 2
[0073] In this embodiment, a case will be described in which whether to perform correction and display for each building is determined based on a display correction flag included in map data. The structure of this embodiment is the same as that of Embodiment 1. Image 6 Descriptions are made, and descriptions of the same parts are omitted.
[0074] In this embodiment, the three-dimensional building data stored in the map data storage unit 101 and the operation of the model-view conversion matrix changing unit 102d are different from the first embodiment. Other points are the same as those in Embodiment 1.
[0075] In the map data storage unit 101, the height H of the building as a three-dimensional object, the number N of vertices N of the polygonal prism shape constituting the bounding rectangle of the building, the coordinates Pi (i=1 to N) of each vertex, attributes, etc. , further storing 3D building data with a display correction flag indicating whether to change the mo...
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