Method and apparatus for analyzing image data
US7660462B2 · kind B2 · utility
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29Claims
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Key dates
| Filing date | Jul 13, 2006 |
| Grant date | Feb 9, 2010 |
| Priority date | — |
| Expiry date | Apr 24, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T7/90
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for the automatic detection of fields or frames in film or video content having similar or substantially the same luminance or color component values, for example to detect black frames. Image sample values are assigned to a sample value range having a signed weight associated therewith, and a contribution to a discriminator function is determined for each sample range depending on the signed weight and the number of input samples in the sample value range. The discriminator function output is then compared with a threshold.
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