The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 11, 2016
Filed:
Mar. 23, 2016
Applicant:
Dolby Laboratories Licensing Corporation, San Francisco, CA (US);
Inventor:
Arkady Ten, Sunnyvale, CA (US);
Assignee:
Dolby Laboratories Licensing Corporation, San Francisco, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K 9/36 (2006.01); H04N 19/136 (2014.01); H04N 19/119 (2014.01); H04N 19/184 (2014.01); H04N 19/33 (2014.01); G06T 5/00 (2006.01); G06T 5/50 (2006.01); H04N 19/117 (2014.01); H04N 19/124 (2014.01); H04N 19/182 (2014.01); H04N 19/186 (2014.01); H04N 19/44 (2014.01); H04N 19/46 (2014.01); G06K 9/46 (2006.01); G06T 7/40 (2006.01);
U.S. Cl.
CPC ...
H04N 19/136 (2014.11); G06K 9/4652 (2013.01); G06T 5/009 (2013.01); G06T 5/50 (2013.01); G06T 7/408 (2013.01); H04N 19/117 (2014.11); H04N 19/119 (2014.11); H04N 19/124 (2014.11); H04N 19/182 (2014.11); H04N 19/184 (2014.11); H04N 19/186 (2014.11); H04N 19/33 (2014.11); H04N 19/44 (2014.11); H04N 19/46 (2014.11); G06T 2207/20008 (2013.01); G06T 2207/20024 (2013.01); G06T 2207/20208 (2013.01);
Abstract
Image encoding and decoding are described. An input HDR image is coded using a coded tone-mapped image, a coded invertible function of a ratio image, and a look-up table representing the inverse of the invertible function, wherein the ratio image represents the pixel by pixel ratio of the luminance pixel values of the input image and the corresponding luminance values in the tone-mapped image. A method to generate the invertible function based on a cumulative histogram of the ratio image is presented.