Machine method for compensating for non-linear picture transformations, E.G. zoom and pan, in a video image motion compensation system
US5953079A · kind A · utility
9Cited by
9References
12Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 8, 1996 |
| Grant date | Sep 14, 1999 |
| Priority date | — |
| Expiry date | Nov 8, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/6811
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Non-linear picture transformations in a video image motion compensation system are caused by camera zooms or rotations. Sets of trial vectors are derived for each block of the image representing peak correlation values between adjacent images in the sequence. A constant representing the non-linear transformation is estimated using the sets of trial vectors and this enables a vector representing the non-linear transformation to be added to the trial vector list for each block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.