US 11,729,400 B2
Luminance based coding tools for video compression
Peng Yin, Ithaca, NY (US); Guan-Ming Su, Fremont, CA (US); Taoran Lu, Santa Clara, CA (US); Tao Chen, Palo Alto, CA (US); and Walter J. Husak, Simi Valley, CA (US)
Assigned to DOLBY LABORATORIES LICENSING CORPORATION, San Francisco, CA (US)
Filed by DOLBY LABORATORIES LICENSING CORPORATION, San Francisco, CA (US)
Filed on May 28, 2021, as Appl. No. 17/334,631.
Application 17/334,631 is a continuation of application No. 15/118,083, granted, now 11,032,553, previously published as PCT/US2015/016549, filed on Feb. 19, 2015.
Claims priority of provisional application 61/944,909, filed on Feb. 26, 2014.
Prior Publication US 2021/0289212 A1, Sep. 16, 2021
Int. Cl. H04N 19/50 (2014.01); H04N 19/167 (2014.01); H04N 19/117 (2014.01); H04N 19/124 (2014.01); H04N 19/17 (2014.01); H04N 19/132 (2014.01); H04N 19/182 (2014.01); H04N 19/60 (2014.01); H04N 19/70 (2014.01); H04L 43/16 (2022.01)
CPC H04N 19/167 (2014.11) [H04L 43/16 (2013.01); H04N 19/117 (2014.11); H04N 19/124 (2014.11); H04N 19/132 (2014.11); H04N 19/17 (2014.11); H04N 19/182 (2014.11); H04N 19/649 (2014.11); H04N 19/70 (2014.11)] 9 Claims
OG exemplary drawing
 
1. A method for processing a spatial region of a video image represented in a video signal, the method comprising:
receiving an input image in a video bitstream comprising luminance and chroma pixel values;
determining a luminance indicator of a spatial image region in the input image based on a plurality of luminance pixel values in the spatial image region, wherein the luminance indicator indicates that a specific partition corresponding to a specific range of luminance levels is utilized in the spatial image region;
determining one or more filtering parameters for a deblocking filter, wherein the filtering parameters depend on the luminance indicator in the spatial image region; and
applying the deblocking filter to the spatial image region to generate a filtered image region, wherein the deblocking filter with the same filtering parameters is applied to filter the plurality of luminance pixel values in the spatial image region to generate a plurality of filtered luminance pixel values in the filtered image.