Dominant color extraction for ambient light derived from...

Details Dominant color extraction for ambient light derived from... Dominant color extraction for ambient light derived from...

2005-06-27

2011-11-22

Lee, Michael (Department: 2422)

Television

Image signal processing circuitry specific to television

Display controlled by ambient light

C348S602000, C348S553000, C348S739000

Reexamination Certificate

active

08063992

ABSTRACT:
Extracting and processing video content encoded in a rendered color space to be emulated by an ambient light source, comprising extracting dominant color information from a video signal and transforming the color information through unrendered color space using tristimulus primary matrices to form a second rendered color space for ambient distribution. Steps include quantizing the rendered color space to form an assigned color distribution, such as by reducing possible color states, or binning to form superpixels; and selecting a dominant color using a mode, mean, median, or weighted average of pixel chromaticities. 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.

REFERENCES:
patent: 3571497 (1971-03-01), Butterfield
patent: 6611297 (2003-08-01), Akashi et al.
patent: 06-076958 (1994-03-01), None
patent: 06-267664 (1994-12-01), None
patent: 03101098 (2003-12-01), None

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