Motion compensation estimating device and method achieving improved motion compensation
US5572258A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 20, 1994 |
| Grant date | Nov 5, 1996 |
| Priority date | — |
| Expiry date | Sep 20, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An area subdividing unit subdivides a reference image, producing sub-areas. An inter-frame difference calculating device determines inter-frame differences between the reference image and an input image. A moving area detecting unit designates, by reference to the inter-frame differences, moving areas from a plurality of sub-areas. An area integrating device integrates the detected moving areas according to information of the reference image to create a plurality of moving object areas. A motion estimating device estimates motion between the input and reference images for each moving object area to attain motion parameters. A motion compensating unit compensates motion for each moving object area based on the motion parameters to generate a motion compensated prediction image. A motion compensating apparatus is capable of achieving complete and exact motion compensation using area information and a reduced number of encoding operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.