Process, apparatus and system for encoding and decoding video signals using temporal filtering
US5539663A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 28, 1994 |
| Grant date | Jul 23, 1996 |
| Priority date | — |
| Expiry date | Apr 28, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2213/13337
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
For decoding, a first portion of an encoded bitstream is decoded to generate a first decoded video frame. A second portion of the encoded bitstream is decoded to generate a second decoded video frame. A temporal filter is applied to the first decoded video frame and the second decoded video frame to generate a filtered second video frame. For encoding, a first unencoded video frame is encoded to generate a first encoded video frame. The first encoded video frame is decoded to generate a first decoded video frame. A second unencoded video frame is encoded to generate a second encoded video frame. The second encoded video frame is decoded to generate a second decoded video frame. A temporal filter is applied to the first decoded video frame and the second decoded video frame to generate a filtered second video frame. A third unencoded video frame is encoded to generate a third encoded video frame. The third encoded video frame is decoded to generate a third decoded video frame, wherein the filtered second video frame is used as a reference frame for generating the third decoded video frame. The temporal filter is applied to the filtered second video frame and the third decoded video …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.