	US 12,477,091 B2
	Depth-color alignment with assistance metadata for transcoding of volumetric video
Bertrand Chupeau, Rennes (FR); Franck Thudor, Rennes (FR); Remy Gendrot, Montgermont (FR); and Gerard Briand, Ploufragan (FR)
Assigned to InterDigital CE Patent Holdings, SAS, Paris (FR)
Appl. No. 18/853,293
Filed by InterDigital CE Patent Holdings, SAS, Paris (FR)
PCT Filed Mar. 23, 2023, PCT No. PCT/EP2023/057406 § 371(c)(1), (2) Date Oct. 1, 2024, PCT Pub. No. WO2023/194109, PCT Pub. Date Oct. 12, 2023.
Claims priority of application No. 22305454 (EP), filed on Apr. 5, 2022.
Prior Publication US 2025/0254282 A1, Aug. 7, 2025
Int. Cl. H04N 13/161 (2018.01); G06T 3/18 (2024.01); H04N 13/111 (2018.01); H04N 19/597 (2014.01)

CPC H04N 13/161 (2018.05) [G06T 3/18 (2024.01); H04N 13/111 (2018.05); H04N 19/597 (2014.11)]

9 Claims

1. A method comprising:

obtaining a multi-view plus depth image comprising color views and first depth views, wherein at least one of the color views is unaligned with first depth views;

for each unaligned color view, determining a subset of the first depth views by:

for each first depth view, generating a second depth view warped to the unaligned color view;

for each pixel of the unaligned color view, counting a contribution of each second depth view to the new depth view; and

selecting the subset of the first depth views according to the counted contribution of the corresponding second depth views; and

encoding the multi-view plus depth image and metadata representative of the subset of the first depth views for each unaligned color view in a data stream.