Cauchy-distribution based coding system and method
US7418147B2 · kind B2 · utility
28Cited by
4References
31Claims
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Key dates
| Filing date | Jun 25, 2004 |
| Grant date | Aug 26, 2008 |
| Priority date | — |
| Expiry date | Jun 1, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Embodiments of a coding system and method are disclosed. One method embodiment includes determining a Cauchy-based probability density function fit to a statistical distribution of coefficients generated from a transformed image frame block that are to be quantized, and estimating rate and distortion of quantized coefficients based on the Cauchy-based probability density function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.