发明名称 |
Method and apparatus for mapping reflectance while illuminating volume data in a rendering pipeline |
摘要 |
Reflection intensities of volume samples of a volume are mapped in a rendering pipeline by determining a reflection vector from a gradient vector associated with a sample and an eye vector associated with the volume. A diffuse reflectance map is indexed by the gradient vector to obtain a diffuse intensity. A specular reflection map is indexed by the gradient vector to obtain a specular intensity in response to a bypass signal being true, and a specular reflection map is indexed by the reflection vector to obtain the specular intensity in response to the bypass signal being false.
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申请公布号 |
US6426749(B1) |
申请公布日期 |
2002.07.30 |
申请号 |
US19990315264 |
申请日期 |
1999.05.20 |
申请人 |
TERARECON, INC. |
发明人 |
KNITTEL JAMES M.;MARTIN DREW R.;PFISTER HANSPETER;KANUS URS H. |
分类号 |
G06F17/16;G06T1/20;G06T15/00;G06T15/08;G06T15/50;(IPC1-7):G06T17/00 |
主分类号 |
G06F17/16 |
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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