Moving quantity detection apparatus and method
US6373897B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 17, 1999 |
| Grant date | Apr 16, 2002 |
| Priority date | — |
| Expiry date | Jun 17, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30236
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A plurality of images are inputted in time series at a predetermined interval. An image processing section divides one image into a plurality of blocks and calculates each evaluation value between a particular block on the one image and each neighboring block on next image. A reduced image processing section reduces the plurality of images by a predetermined reduction ratio, divides one reduced image corresponding to the one image into a plurality of blocks, and calculates each evaluation value between a particular block on the one reduced image and each neighboring block on other reduced image corresponding to a multiple of the predetermined interval for the predetermined reduction ratio. A moving quantity detection section counts the evaluation value by unit of the each neighboring block for the time serial image and the other reduced image, selects one neighboring block whose evaluation value is highest, and calculates a moving quantity between the particular block and the one neighboring block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.