发明名称 |
DISPLAYING ELEVATION INFORMATION FROM A DIGITAL MAP |
摘要 |
<p>A method and apparatus are described for rendering a display image generated from digital map information. The method includes the steps of: determining elevation information (20a) from the digital map information; determining display scale information (28) for the display image; and determining (22) a shading value to apply to a pixel in the display image, and applying the shading value to the respective pixel in the display image, to generate a display (24) that represents elevation information by pixel shading. The shading value varies as a function of the elevation information and the display scale information, whereby the display is generated to represent elevation information by pixel shading that varies with display scale.</p> |
申请公布号 |
WO2008083979(A1) |
申请公布日期 |
2008.07.17 |
申请号 |
WO2008EP00182 |
申请日期 |
2008.01.09 |
申请人 |
TOMTOM INTERNATIONAL B.V.;SERBANESCU, ALEXANDRU |
发明人 |
SERBANESCU, ALEXANDRU |
分类号 |
G06T17/50;G06F17/30;G06T11/00 |
主分类号 |
G06T17/50 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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