Video signal processing
US6075818A · kind A · utility
15Cited by
12References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 25, 1997 |
| Grant date | Jun 13, 2000 |
| Priority date | — |
| Expiry date | Sep 25, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/87
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Cuts in a video signal are detected by first measuring a correlation parameter between successive images; this can be the sum of the maximum peak heights for each of 16 to 100 or more blocks in a block-based phase correlation procedure. An averaged value of this correlation parameter is maintained and the current measurement of the correlation parameter is compared with the averaged value. The presence of a cut is inferred where the current measurement drops beneath, say, 50% of the average value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.