Motion vector detecting circuit
US5581309A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 1996 |
| Grant date | Dec 3, 1996 |
| Priority date | — |
| Expiry date | Mar 18, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10016
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Correlated values at respective sampling points are found by a correlated value operating circuit on the basis of image data corresponding to each of sampling points in each of small areas in the present field and image data corresponding to a typical point in the corresponding small area in the preceding field which is stored in typical point data storing circuit. The correlated values which are found by the correlated value operating circuit are sent to an accumulating circuit and an average value calculating circuit. In the accumulating circuit, the correlated values at the sampling points which are the same in displacement from each of the typical points between the small areas in each of motion vector detecting areas are accumulated. In the average value calculating circuit, the total of the correlated values at all the sampling points in each of the motion vector detecting areas is calculated for each motion vector detecting area, and each of the results of the calculation is divided by the total number of sampling points in one of the small areas, thereby to find the average value of values obtained by accumulating the correlated values for each motion vector detecting area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.