US 12,244,872 B2
Wrapped reshaping for codeword augmentation with neighborhood consistency
Janos Horvath, Santa Clara, CA (US); Harshad Kadu, Santa Clara, CA (US); and Guan-Ming Su, Fremont, CA (US)
Assigned to Dolby Laboratories Licensing Corporation, San Francisco, CA (US)
Appl. No. 18/252,357
Filed by Dolby Laboratories Licensing Corporation, San Francisco, CA (US)
PCT Filed Nov. 10, 2021, PCT No. PCT/US2021/058868
§ 371(c)(1), (2) Date May 9, 2023,
PCT Pub. No. WO2022/103902, PCT Pub. Date May 19, 2022.
Claims priority of provisional application 63/112,336, filed on Nov. 11, 2020.
Claims priority of application No. 20206922 (EP), filed on Nov. 11, 2020.
Prior Publication US 2024/0007682 A1, Jan. 4, 2024
Int. Cl. H04N 19/98 (2014.01); H04N 19/105 (2014.01); H04N 19/186 (2014.01)
CPC H04N 19/98 (2014.11) [H04N 19/105 (2014.11); H04N 19/186 (2014.11)] 24 Claims
OG exemplary drawing
 
1. A method comprising:
receiving an input image of a first bit depth in an input domain from an input video signal of the first bit depth, the first bit depth being higher than a second bit depth in a reshaping domain;
performing forward reshaping operations on the input image to generate a forward reshaped image of the second bit depth in the reshaping domain, the forward reshaping operations including wrapping input codewords in the input image along a non-wrapped axis of the input domain into reshaped codewords in the forward reshaped image in a wrapped axis of the reshaping domain, wherein the non-wrapped axis is represented as a straight line axis in the input domain; wherein the wrapped axis is represented in a non-straight-line spatial shape in the reshaped domain;
encoding, into an output video signal of the second bit depth, an image container containing image data derived from the forward reshaped image, the image data in the image container causing a recipient device of the output video signal to construct a backward reshaped image of a third bit depth for rendering on a display device, the third bit depth being higher than the second bit depth.