High performance surface normal compression
US6169819A · kind A · utility
2Cited by
1References
29Claims
0Family size
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Key dates
| Filing date | Oct 31, 1998 |
| Grant date | Jan 2, 2001 |
| Priority date | — |
| Expiry date | Oct 31, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M7/30
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A high performance method for the compression of floating point format surface normals and the inverse method for the decompression of those compressed surface normals. Each of the three vector components of the surface normal is compressed by subtracting a constant from the floating point format value, then extracting a predefined field, and finally storing the extracted field. Decompression of the compressed surface normal requires first converting the three stored vector components into floating-point format and then adding a predefined constant to each. Typically the surface normals are of unit length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.