Method and apparatus for encoding frequency components of image information
US5162923A · kind A · utility
41Cited by
14References
95Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 21, 1989 |
| Grant date | Nov 10, 1992 |
| Priority date | — |
| Expiry date | Feb 21, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/41
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image encoding method, and an apparatus therefor, enabling rapid comprehension of the outline of the entire image promptly, at the decoding of the encoded image information, and also an image encoding method, and an apparatus therefor, capable of efficient encoding adapted for the state of the image to be encoded. Image information is divided into plural block, each consisting of plural pixels, the frequency of the image in each block is analyzed, the frequency components of the image in each block are separated into plural bands, and the frequency components contained in each of said plural bands are encoded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.