US 12,073,594 B2
Methods and devices for encoding and decoding three degrees of freedom and volumetric compatible video stream
Julien Fleureau, Rennes (FR); Bertrand Chupeau, Rennes (FR); Gerard Briand, Ploufragan (FR); Renaud Dore, Rennes (FR); Thierry Tapie, Rennes (FR); and Franck Thudor, Rennes (FR)
Assigned to INTERDIGITAL VC HOLDINGS, INC., Wilmington, DE (US)
Appl. No. 17/260,144
Filed by InterDigital VC Holdings, Inc., Wilmington, DE (US)
PCT Filed Jun. 24, 2019, PCT No. PCT/US2019/038640
§ 371(c)(1), (2) Date Jan. 13, 2021,
PCT Pub. No. WO2020/013977, PCT Pub. Date Jan. 16, 2020.
Claims priority of application No. 18305949 (EP), filed on Jul. 13, 2018.
Prior Publication US 2022/0138990 A1, May 5, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G06T 9/00 (2006.01); G06T 15/20 (2011.01); G06T 17/20 (2006.01)
CPC G06T 9/001 (2013.01) [G06T 15/20 (2013.01); G06T 17/20 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of generating a stream representative of a 3D scene, the method comprising:
generating first color data by projecting points of the 3D scene visible from a point of view onto a first color map according to a first projection mapping, the first color data being a color image adapted to a rendering enabling 3 degrees of freedom of rotation around said point of view;
generating first depth data by projecting points of the 3D scene visible from said point of view onto a first depth map according to a second projection mapping; said first depth data being encoded as patch pictures packed in a first depth patch atlas associated with a first patch data item list, a first patch data item comprising information mapping a depth patch picture with a pixel area of said color image;
generating second color data and second depth data representative of points of the 3D scene invisible from said point of view and visible from viewpoints within a space of view around said first point of view; and
encoding, in said stream, the first color data in a first element of syntax and said first depth data, said second color data and said second depth data in at least a second element of syntax.