Method of video encoding using windows and system thereof
US7408989B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2003 |
| Grant date | Aug 5, 2008 |
| Priority date | — |
| Expiry date | Dec 18, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T7/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A first search window within a reference frame of video data is identified along with a first correlation threshold value for the first window. The first correlation threshold value is a value to which correlation factors between a pixel set being encoded and pixels sets of the first search window are compared. For example, if a correlation factor between a specific pixel set of the first search window and a pixel set being encoded meets the first threshold value, a successful match between the two pixel sets has been found, and a corresponding motion vector can be assigned to the pixel set being encoded. If none of the pixel sets within the first window meet the first threshold value, a second search window within the first frame is selected along with a second correlation threshold value. The correlation factors for pixel sets in the second window are compared to the second correlation threshold value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.