Vector transform coder with multi-layered codebooks and dynamic bit allocation
US5521988A · kind A · utility
20Cited by
4References
1Claims
0Family size
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Key dates
| Filing date | Apr 5, 1994 |
| Grant date | May 28, 1996 |
| Priority date | — |
| Expiry date | Apr 5, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T9/008
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a vector transform coding (VTC) scheme for image and video compression, a multi-layered codebook structure and a dynamic bit-allocation scheme in the vector transform domain are employed. The main advantage of this technique is that distortion is controlled by dynamically allocating more bits to vectors causing larger distortions and less bits to vectors causing smaller distortions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.