US 12,452,444 B2
High dynamic range adaptation operations at a video decoder
Zhouye Gu, San Diego, CA (US); and Koohyar Minoo, San Diego, CA (US)
Assigned to ARRIS Enterprises LLC, Horsham, PA (US)
Filed by ARRIS Enterprises LLC, Horsham, PA (US)
Filed on Jun. 3, 2024, as Appl. No. 18/732,084.
Application 18/732,084 is a continuation of application No. 17/476,224, filed on Sep. 15, 2021, granted, now 12,028,542.
Application 17/476,224 is a continuation of application No. 16/546,576, filed on Aug. 21, 2019, granted, now 11,153,589, issued on Oct. 19, 2021.
Application 16/546,576 is a continuation of application No. 16/142,922, filed on Sep. 26, 2018, granted, now 10,432,955, issued on Oct. 1, 2019.
Application 16/142,922 is a continuation of application No. 15/783,683, filed on Oct. 13, 2017, granted, now 10,116,954, issued on Oct. 30, 2018.
Application 15/783,683 is a continuation of application No. 15/274,653, filed on Sep. 23, 2016, granted, now 9,819,956, issued on Nov. 14, 2017.
Claims priority of provisional application 62/222,715, filed on Sep. 23, 2015.
Prior Publication US 2024/0323421 A1, Sep. 26, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04N 19/44 (2014.01); G06T 5/92 (2024.01); H04L 65/70 (2022.01); H04N 19/136 (2014.01); H04N 19/46 (2014.01); H04N 19/85 (2014.01)
CPC H04N 19/44 (2014.11) [G06T 5/92 (2024.01); H04L 65/70 (2022.05); H04N 19/136 (2014.11); H04N 19/46 (2014.11); H04N 19/85 (2014.11); G06T 2207/10016 (2013.01); G06T 2207/10024 (2013.01); G06T 2207/20004 (2013.01); G06T 2207/20208 (2013.01)] 1 Claim
OG exemplary drawing
 
1. A method of modifying a first dynamic range video content included in a bitstream by a decoder that includes a processor, the method comprising:
(a) receiving said bitstream at said decoder;
(b) decoding by said decoder said first dynamic range video content included in said bitstream representative of color values having a first dynamic range capable of representing a lowest light level to a highest light level representative of said first dynamic range;
(c) said decoder receiving at least one metadata item included in said bitstream and to perform one or more second dynamic range operations;
(d) modifying said first dynamic range video content to a second dynamic range video content based upon said color values using said one or more second dynamic range operations, where said second dynamic range video content has a second dynamic range capable of representing a lowest light level to a highest light level representative of said second dynamic range, where said second dynamic range is greater than said first dynamic range;
(e) wherein said modifying includes an inverse color appearance transfer function that is used when said modifying said color values from said first dynamic range to said second dynamic range;
(f) wherein said inverse color appearance input transfer function includes a perceptual quantizer (PQ) function;
(g) where said bitstream is adaptable on a segment by segment basis based upon changes in said at least one metadata item being received on a segment by segment basis, where said at least one metadata item is different on said segment by segment basis for a plurality of at least three sequential segments, wherein said modified second dynamic range video content has a different dynamic range for each of said at least three sequential segments based upon corresponding said changes in said at least one metadata item being received on said segment by segment basis.