MUMBAI, India, July 13 -- Intellectual Property India has published a patent application (202348048087 A) filed by Dolby Laboratories Licensing on July 17, 2023, for Iterative Optimization Of Reshaping Functions In Single-Layer Hdr Image Codec.
Inventors include Su, Guan-Ming; and Kadu, Harshad.
The application for the patent was published on July 10, 2026, under issue no. 28/2026.
Abstract: ABSTRACT ITERATIVE OPTIMIZATION OF RESHAPING FUNCTIONS IN SINGLE-LAYER HDR IMAGE CODEC A method, for generating (a) a forward reshaping function for compressing 5 an input high-dynamic range (HDR) image into a reshaped standard-dynamic-range (SDR) image and (b) a backward reshaping function for decompressing the reshaped SDR image into a reconstructed HDR image, includes (i) optimizing the forward reshaping function to minimize a deviation between the reshaped SDR image and an input SDR image corresponding to the input HDR image, (ii) 10 optimizing the backward reshaping function to minimize a deviation between the reconstructed HDR image and the input HDR image, and (iii) until a termination condition is met, applying a correction to the input SDR image and reiterating, based on the input SDR image as corrected, the steps of optimizing the forward and backward reshaping functions
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