Method and apparatus for selecting a prediction mode, and image encoding/decoding method and apparatus using same
US9641844B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2010 |
| Grant date | May 2, 2017 |
| Priority date | — |
| Expiry date | Feb 10, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present disclosure concerns a method and apparatus for selecting an intra prediction mode and a video encoding/decoding method and apparatus using same. The encoding apparatus selects an intra prediction mode of current block to encode from input video by a variation of the value of pixel adjacent to the current block; encodes a residual block from intra-predicting the current block in the selected intra prediction mode of current block to generate coded coefficient bit having a bitstream generator for generating and outputting a bitstream including the coded coefficient bit and a prediction mode bit representing the selected intra prediction mode of current block by a macroblock or subblock unit with the prediction mode bit included selectively in the bitstream depending on the variation. Accordingly, selection process of a prediction mode for image compression is simplified, a faster compression is obtained and compressed data is deflated to improve compression efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.