Video signal processing
US6570923B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2000 |
| Grant date | May 27, 2003 |
| Priority date | — |
| Expiry date | Sep 7, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/431
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Video signal processing apparatus in which at least first and second input video signals are combined to generate an output compressed video signal, the first and second video signals each having respective associated motion vectors from a data compression process applied to the video signals; comprises:means for establishing a set of the motion vectors associated with the first and second video signals which can potentially be re-used in compressing the output compressed video signal; andmeans for testing the set of motion vectors, the testing means being operable:(c) to define, with respect to reference images referred to by the motion vectors under test, a first border region of a predetermined width surrounding those parts of the reference images derived in part from the first video signal, and a second border region of a predetermined width surrounding those parts of the reference images derived in part from the second video signal; and(d) to test whether motion vectors of the set which are associated with parts of each video signal refer either to image areas derived in part from the other video signal, to the first border region or to the second border region;in which any mo…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.