Image sequence encoding device and area extracting device
US5729295A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 27, 1995 |
| Grant date | Mar 17, 1998 |
| Priority date | — |
| Expiry date | Nov 27, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In an image sequence encoding device, a specified area and a motion area are extracted from an input image and encoded by allocating a relatively increased amount of codes to the specified area and a relatively reduced amount of codes to the motion area to improve the quality of the specified area of the image. The image sequence encoding device is provided with a specified area extracting portion connected to a frame memory to extract a specified area from an input image; a motion area extracting portion connected to a motion detecting portion to extract a motion area according to a magnitude of motion vectors and a specified area of a preceding frame; an encoding control portion connected to a buffer memory; a specified area extracting portion and a motion extracting portion to control quantizing and encoding process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.