Method of color components compression
US8094931B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 9, 2008 |
| Grant date | Jan 10, 2012 |
| Priority date | — |
| Expiry date | Oct 5, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/186
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of color components compression is provided. In the present method, when receiving video data encoded by a 4:4:4 sampling format, color components of each set of neighboring pixels in the video data is down-sampled and a first difference of the color components between the video data before and after down-sampling in a down-sampling mode is calculated. Then, the color components of each pixel in the video data are truncated and a second difference of the color components between the video data before and after truncation in a truncation mode is calculated. The first difference and the second difference are compared and the down-sampling mode or the truncation mode that has a smaller difference is selected to compress the video data into a 4:2:2 sampling format.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.