System for extracting coding parameters from video data
US6101278A · kind A · utility
10Cited by
6References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 30, 1998 |
| Grant date | Aug 8, 2000 |
| Priority date | — |
| Expiry date | Jan 30, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/15
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system extracts, from uncoded video data, coding parameters that correspond substantially to coding parameters used in a coding operation that was previously performed on the video data. The system generates a histogram for at least one AC frequency band in the uncoded video data and calculates a correlation function for the histogram. A maximum value of the correlation function is then identified, and a coding parameter for the at least one AC frequency band is determined using the maximum value of the correlation function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.