公开(公告)号：EP3489900A1

公开(公告)日：2019-05-29

申请号：EP17306629.1

申请日：2017-11-23

申请人： THOMSON LICENSING

发明人： THUDOR, FRANCK ,  CHUPEAU, BERTRAND ,  DORE, RENAUD ,  TAPIE, THIERRY ,  FLEUREAU, JULIEN

IPC分类号： G06T9/00 ,  H04N19/597

摘要： A method and device for encoding data representative of a 3D representation of a scene into a bitstream, the 3D representation being according to a range of points of view. To reach that aim, at least a depth map associated with at least a part of the 3D representation is generated according to at least a parameter representative of at least a two-dimensional parametrization associated with the at least a part and data associated with at least a point comprised in the at least a part, the at least a two-dimensional parametrization being responsive to geometric information associated with the at least a point and to pose information associated with the range of points of view. At least a texture map associated with the at least a part is generated according to the at least a parameter and data associated with the at least a point comprised in the at least a part. A first information representative of point density of points comprised in at least a part of the at least a part of the 3D representation is obtained. The at least a depth map is encoded into a first syntax element of the bitstream, the at least a texture map into a second syntax element of the bitstream, the at least a parameter into a third syntax element of the bitstream, the first information into a fourth syntax element of the bitstream and a second information representative of a mapping between the at least a two-dimensional parametrization and corresponding at least a depth map and at least a texture map into a fifth syntax element of the bitstream.
Corresponding method and device for decoding the bitstream are also disclosed.

公开(公告)号：EP3481067A1

公开(公告)日：2019-05-08

申请号：EP17306538.4

申请日：2017-11-07

申请人： THOMSON LICENSING

发明人： CHUPEAU, BERTRAND ,  GALPIN, FRANCK ,  FLEUREAU, JULIEN

IPC分类号： H04N19/597

摘要： A method and device for encoding data representative of a 3D representation of a scene into a bitstream, the 3D representation being according to a range of points of view. To reach that aim, at least a depth map associated with at least a part of the 3D representation is generated according to at least one parameter representative of at least a 2D parametrization associated with the at least a part and data associated with at least a point comprised in the at least a part; at least a texture map associated with the at least a part is generated according to the at least a parameter and data associated with the at least a point; a first information representative of variation of quantization parameter within the at least a depth map and/or said at least a texture map is obtained according to a region of interest of the 3D representation; and the at least a depth map is encoded into a first syntax element of the bitstream, the at least a texture map is encoded into a second syntax element of the bitstream, the at least a parameter is encoded into a third syntax element, the first information is encoded into a fourth syntax element and a second information representative of a mapping between the at least a 2D parametrization and corresponding at least a depth map and at least a texture map is encoded into a fifth syntax element.
Corresponding decoding method and device are also disclosed.

公开(公告)号：EP3474562A1

公开(公告)日：2019-04-24

申请号：EP17306443.7

申请日：2017-10-20

申请人： Thomson Licensing

发明人： CHUPEAU, BERTRAND ,  BRIAND, GERARD ,  CHAMPEL, MARY-LUC

IPC分类号： H04N21/854 ,  H04N21/81 ,  H04N21/218

摘要： A method and device for encoding data representative of a 3D scene into a container. To reach that aim, first data representative of texture of the 3D scene visible according to a first point of view is encoded into a first video track of the container; second data representative of geometry of the 3D scene visible according to a set of points of view comprising the first point of view is encoded into at least a second video track of the container; third data representative of texture of the 3D scene visible only from the points of view of the set excluding the first point of view is encoded into a third video track of the container; and metadata is encoded into a fourth track of the container, the metadata being associated with the first data of the first video track, the second data of the at least a second video track and the third data of the third video track, the metadata comprising information representative of at least a projection used to obtain the second and third data.
A corresponding method and device for decoding the encoded data is further disclosed.