| 摘要 |
PROBLEM TO BE SOLVED: To relax hindrance arising from a depth determination upon drawing a three-dimensional map.SOLUTION: A three-dimensional map display system 100 is configured to: perform a depth determination and hidden surface processing, and draw a ground surface and a ground feature on a ground by a first drawing unit 42; then, draw an object ground feature regardless of a depth relationship between the ground surface drawn by the first drawing unit and the ground feature thereby, by a second drawing unit 46, and draw an underground ground feature by overwriting the underground ground feature on a result drawn by the first drawing unit 42; and, when drawing the underground ground feature, prohibit the underground ground feature from being drawn in an area overlapping on the building on the ground by a mask image generated by a mask image generation unit 44 so that the underground ground feature is displayed as if the depth determination between a building on the ground and the underground ground feature is conducted. |
