Title:
ビデオ・コンテンツから導出した周辺光を生成するための知覚規則を用いた支配色抽出
Document Type and Number:
Japanese Patent JP2008507808
Kind Code:
A
Abstract:
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.
Inventors:
Srinifus footer
Elmo Em Ard Delix
Mark Jay Eltzing
Elmo Em Ard Delix
Mark Jay Eltzing
Application Number:
JP2007518780A
Publication Date:
March 13, 2008
Filing Date:
June 27, 2005
Export Citation:
Assignee:
Koninklijke Philips Electronics N.V.
International Classes:
H05B37/02; H04N9/12; H04N9/64
Foreign References:
| WO2003101098A1 | 2003-12-04 |
Attorney, Agent or Firm:
Kenji Sugimura
Kosaku Sugimura
Shiro Fujitani
Kiyoshi Kuruma
Yoshiyuki Iwasa
Kosaku Sugimura
Shiro Fujitani
Kiyoshi Kuruma
Yoshiyuki Iwasa