Method for reducing the size of a digital image or video file
US8290282B2 · kind B2 · utility
0Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2004 |
| Grant date | Oct 16, 2012 |
| Priority date | — |
| Expiry date | Mar 12, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention concerns a method comprising a coding step consisting in replacing the original values of the file with coding values of reduced brightness, a common coding value being attributed to a group of original values, a step of restitution consisting in setting correspondence values between the coding value and the restored value, selected from one of the values of the corresponding group, an insertion step consisting in modifying the successive redundant restored values so as to produce shades and a step which consists in reading the values resulting from the insertion step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.