Data compression by discarding portions of data
US5040233A · kind A · utility
33Cited by
1References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 9, 1990 |
| Grant date | Aug 13, 1991 |
| Priority date | — |
| Expiry date | Jan 9, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/41
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of modifying a digital representation of an image in which digital data defines the content of pixels of the image. The method comprises PA0 a) determining whether a predetermined degree of compression can be achieved if data defining a block of pixels is compressed by applying a predetermined compression algorithm; and, if not, PA0 b) discarding a portion of the data in the block, and repeating steps a and b on the most recently modified block until the predetermined degree of compression is achieved, and generating a compressed version of the image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.