Coding method and apparatus therefor
US6026197A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1996 |
| Grant date | Feb 15, 2000 |
| Priority date | — |
| Expiry date | Oct 25, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/4172
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
There is provided a coding apparatus and method for hierarchically coding an image, in which a number of consecutive lines of image data representing pixels of the image are entered line by line. Reduced image data representing pixels of a reduced image based on the entered image data are formed. A determination is made in parallel with the formation of the reduced image data as to whether or not image data of an object pixel to be coded can be predicted from the reduced image data and from image data representing surrounding pixels of the entered object pixel. The entered image data are coded in accordance with the determination result.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.