Segmenting image signals for encoding using quantization analysis
US5459518A · kind A · utility
13Cited by
4References
44Claims
0Family size
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Key dates
| Filing date | Jun 28, 1994 |
| Grant date | Oct 17, 1995 |
| Priority date | — |
| Expiry date | Jun 28, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/85
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A cell of an image is segmented into two or more subcells. According to one embodiment, the nullity of each of the subcells is classified and the cell is encoded in accordance with the nullity of the subcells. According to another embodiment, the quantization level of each of the subcells is classified and the cell is encoded in accordance with the quantization levels of the subcells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.