发明名称 |
Navigation system, method for stereoscopically displaying topographic map for the navigation system, and recording medium recording the method |
摘要 |
In a method for stereoscopically displaying the topographic map, a navigation system, and the recording medium recording the method, a multiple number of quadrilaterals with mutually adjoining four points of terrain locations as four vertices of each quadrilateral from the three-dimensional road map information are generated, each quadrilateral is divided into four triangles with one or two diagonal lines of each quadrilateral, a perspective projection transformation of three vertices of each triangle is performed onto a predetermined perspectively projected plane, a display color is allocated to each of the perspectively projected triangles, and the allocated display color is displayed on an image screen of a display device together with each of the perspectively projected triangles.
|
申请公布号 |
US6121972(A) |
申请公布日期 |
2000.09.19 |
申请号 |
US19980130443 |
申请日期 |
1998.08.06 |
申请人 |
NISSAN MOTOR CO., LTD. |
发明人 |
TAKAHASHI, TOSHIAKI;KISHI, NORIMASA;WATANABE, MASAKI |
分类号 |
G09B29/00;G01C21/00;(IPC1-7):G06F15/00 |
主分类号 |
G09B29/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|