Motion vector estimation system
US6078618A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 4, 1998 |
| Grant date | Jun 20, 2000 |
| Priority date | — |
| Expiry date | Mar 4, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/51
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A reference picture storing section 101 stores reference picture data referred in a motion vector estimation. A current picture storing section 102 stores a current picture data for the motion vector estimation. A motion vector estimating section 103 takes matching between the current picture data and the reference picture data to estimate a motion vector having the minimum difference. A motion vector statistics processing section 104 calculates an average value and a histogram from each picture of an estimated motion vector. A shift vector setting section 105 calculates a shift vector of a motion vector search window based on the average value and histogram in each of coded pictures. A search window designating section 106 designates a motion vector to be searched according to the calculated shift vector so as to cause the motion vector estimating section 103 to estimate the motion vector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.