Device and method of detecting motion vectors
US6456660B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 20, 1999 |
| Grant date | Sep 24, 2002 |
| Priority date | — |
| Expiry date | Jan 20, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/56
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A motion vector detection device is provided that can suitably detect motion vectors by setting an optimum search range of vector values of a motion vector. The motion vector detection section 103 sequentially matches the input data 101 with the reference image data 102 every divided region and detects the motion vector 104 within a search range of specified vector values. The histogram creation section 105 increments a motion vector detection frequency stored in the histogram recording section 109 corresponding to a range to which the vector value of the detected motion vector 104 belongs. When the increment process for one frame has been completed, a histogram for a motion vector detection frequency for one frame is formed in the histogram recording section 109 and is corrected if necessary. The shift amount setting section 107 decides the shift amount of a search range specified in the next frame by the search range setting section 108, according to the created (corrected) histogram.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.