Image processing apparatus
US6064776A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 24, 1996 |
| Grant date | May 16, 2000 |
| Priority date | — |
| Expiry date | Oct 24, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image processing apparatus includes a flat domain decision unit that causes a segmentation unit to divide the decoded picture signal from a decoder into a plurality of small regions (blocks) and then causes a picture quality decision unit to decide whether or not the regions are flat domains region by region, an AC component prediction unit that predicts the AC component from the decoded picture signal, and a switch that outputs the AC component signal predicted by the AC component prediction unit for the blocks determined by the flat domain decision unit to be flat domains and also outputs the decoded picture signal as it is for the remaining blocks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.