Allocation of available bits to represent different portions of video frames captured in a sequence
US8787445B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2007 |
| Grant date | Jul 22, 2014 |
| Priority date | — |
| Expiry date | Jul 12, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A technique of encoding video frames allocates an available number of bits to different portions of the video frame. A processing unit identifies a region of interest (ROI) in a video frame, and computes a first and second complexity parameter respectively representing the change in video information in the ROI portions and non-ROI portions in the video frame relative to a reference frame. Bits are allocated to the ROI portion proportional (positive correlation) to the first complexity parameter and a ratio of the area of the ROI to the area of the frame. The remaining available bits are allocated to the non-ROI. In an embodiment, the bits are encoded according to H.264 standard.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.