Efficient tone-mapping of high-bit-depth video to low-bit-depth display

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United States of America Patent

PATENT NO 9129445
APP PUB NO 20130241931A1
SERIAL NO

13796165

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Abstract

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Several embodiments of an efficient tone mapping of high bit depth video to low bit depth displays are disclosed. In one embodiment, a system maps an input image data of a high dynamic range (HDR) onto output image data of a lower dynamic range (LDR) and where the mapping does not transform the input image data from one color space to another color space. One embodiment comprises a tone mapping module which outputs a tone-mapped luminance signal for output image data and a color mapping module which outputs chroma signals for the output image data. Intermediate image processing steps may be avoided and hence may increase the efficiency of the mapping.

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Patent Owner(s)

  • DOLBY LABORATORIES LICENSING CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Mai, Zicong Burnaby, CA 2 48
Nasiopoulos, Panos Vancouver, CA 5 58
Ward, Rabab K Vancouver, CA 10 219

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