发明名称 |
Dominant Color Extraction Using Perceptual Rules to Produce Ambient Light Derived From Video Content |
摘要 |
Extracting and processing video content encoded in a rendered color space to be emulated by an ambient light source, using perceptual rules for intelligent dominant color selection. Steps include quantizing the video color space; performing dominant color extraction by using a mode, median, mean, or weighted average of pixel chromaticities; applying perceptual rules to further derive dominant chromaticities via [1] chromaticity transforms; [2] a weighted average using a pixel weighting function influenced by scene content; and [3] extended dominant color extraction where pixel weighting is reduced for majority pixels; and [4] transforming the dominant color chosen to the ambient light color space using tristimulus matrices. A color of interest can be further analyzed to produce a true dominant color, and past video frames can guide selection of dominant colors in future frames.
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申请公布号 |
US2007242162(A1) |
申请公布日期 |
2007.10.18 |
申请号 |
US20050571283 |
申请日期 |
2005.06.27 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS, N.V. |
发明人 |
GUTTA SRINIVAS;DIEDERIKS ELMO M.A.;ELTING MARK J. |
分类号 |
H04N9/68;H04N9/12;H04N9/64 |
主分类号 |
H04N9/68 |
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地址 |
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