发明名称 |
SYSTEM AND METHOD FOR DETERMINING A SPATIAL HIERARCHY FOR POLYGONAL DATA BY USING CUBE-ROOT SCALING |
摘要 |
A method of determining a spatial hierarchy for polygon data, comprises obtaining a switching range, and determining a polygon density for the spatial hierarchy, using the switching range and a cube-root scaling factor. Another method of determining a spatial hierarchy for polygon data, comprises determining a cube-root scaling factor based on an altitude parameter, and using the cube-root scaling factor to scale level-of-detail switching ranges for the spatial hierarchy. The methods may be embodied in a computer program (or some unit of code) stored on a computer readable medium, such as a compact disc (i.e. CD), and/or transmitted via a computer network, such as the Internet, or another transmission medium. |
申请公布号 |
WO02077921(A2) |
申请公布日期 |
2002.10.03 |
申请号 |
WO2002US09730 |
申请日期 |
2002.03.27 |
申请人 |
COMPUTER ASSOCIATES THINK, INC. |
发明人 |
GUEZIEC, ANDRE;BROCKWAY, DAN;GERSUK, STEPHEN;FITCH, MICHELLE;WEAR, MARK |
分类号 |
G06T17/20;G06T15/10;G06T17/05 |
主分类号 |
G06T17/20 |
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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