Differential encoding using a 3d graphics processor
US8106921B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 2004 |
| Grant date | Jan 31, 2012 |
| Priority date | — |
| Expiry date | Aug 19, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/43
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A 3D graphics rendering pipeline is used to carry out data comparisons for motion estimation in video data encoding.Video data for the pixel block of the video frame currently being encoded is loaded into the output buffers of the rendering pipeline. The video data for the comparison pixel blocks from the reference video frame is stored as texture map values in the texture cache of the rendering pipeline.Once the sets of pixel data for comparison have been stored, the rendering pipeline is controlled to render a primitive having fragment positions and texture coordinates corresponding to the data values that it is desired to compare. As each fragment is rendered, the stored and rendered fragment data is compared by fragment compare unit and the determined differences in the data values are accumulated in an error term register.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.