US 12,088,824 B2
Method for encoding and decoding video by signaling of a candidate sub-assembly
Jean-Marc Thiesse, Chatillon (FR); David Gommelet, Chatillon (FR); Didier Nicholson, Chatillon (FR); and Madhukar Bhat, Chatillon (FR)
Assigned to S.A. VITEC, Paris (FR)
Appl. No. 17/620,994
Filed by S.A. VITEC, Paris (FR)
PCT Filed Jun. 26, 2020, PCT No. PCT/FR2020/051124
§ 371(c)(1), (2) Date Dec. 20, 2021,
PCT Pub. No. WO2020/260843, PCT Pub. Date Dec. 30, 2020.
Claims priority of application No. 1907069 (FR), filed on Jun. 27, 2019.
Prior Publication US 2022/0368923 A1, Nov. 17, 2022
Int. Cl. H04N 19/157 (2014.01); H04N 19/103 (2014.01); H04N 19/136 (2014.01); H04N 19/463 (2014.01)
CPC H04N 19/157 (2014.11) [H04N 19/103 (2014.11); H04N 19/136 (2014.11); H04N 19/463 (2014.11)] 20 Claims
OG exemplary drawing
 
1. A method for decoding a video bitstream corresponding to a sequence of images, the method comprising:
obtaining first information from first encoded data contained in the bitstream;
determining a list of coding parameters on the basis of the first information and of at least one predefined list of coding parameters;
obtaining second information from second encoded data contained in the bitstream, the second information corresponding to a coding parameter among the coding parameters in the list of coding parameters;
determining an element of a reconstructed image corresponding to an element of an image in the sequence of images, by means of said coding parameter corresponding to the second information and of encoded data representative of the element of the image in the sequence;
wherein the size of the second encoded data depends on the number of coding parameters in the list of coding parameters;
wherein the predefined list of coding parameters is indexed from 0 to N−1, with N being the number of coding parameters in the predefined list, and wherein the determination of the list of coding parameters is done by selecting, on the basis of the first information:
coding parameters of indices k+n.m in the predefined list, with n a strictly positive integer and k a positive integer or zero and n+k less than or equal to N−1, and m between 0 and the integer part of (N−k−1)/n; and
coding parameters of indices strictly less than k′ in the predefined list, with k′ being a positive integer or zero and less than or equal to k.