公开(公告)号：US20230217006A1

公开(公告)日：2023-07-06

申请号：US17642075

申请日：2020-09-02

Applicant: InterDigital VC Holdings, Inc.

Inventor： Bertrand Chupeau ,  Gerard Briand ,  Thierry Tapie

IPC: H04N13/388 ,  G06T17/00 ,  G06T7/11 ,  H04N13/178 ,  H04N19/597

CPC classification number: H04N13/388 ,  G06T17/00 ,  G06T7/11 ,  H04N13/178 ,  H04N19/597

Abstract: Methods, apparatuses and streams are disclosed for transmitting tiled volumetric video and, at the receiver, for generating an atlas image compatible with a legacy decoder. At the server side, viewport information is obtained and a first list of central tiles and a second list of border tiles are selected. A central tile is a part of an image obtained by projecting the 3D scene onto an image plane according to a central point of view. A border tile is an image comprising dis-occluding patches. Sizes and shapes of border tiles are function of size and shape of central tiles. At the client side, tiles are arranged according to a layout selected in a set of layouts according to the number, sizes and shapes of border tiles.
FIG. 8.

公开(公告)号：US20250047822A1

公开(公告)日：2025-02-06

申请号：US18924932

申请日：2024-10-23

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： Bertrand Chupeau ,  Gerard Briand ,  Renaud Dore

IPC: H04N13/178 ,  H04N13/161 ,  H04N13/194

Abstract: Methods, devices and data stream are provided for signaling and decoding information representative of restrictions of navigation in a volumetric video. The data stream comprises metadata associated to video data representative of the volumetric video. The metadata comprise data representative of a viewing bounding box, data representative of a curvilinear path in the 3D space of said volumetric video; and data representative of at least one viewing direction range associated with a point on the curvilinear path.

公开(公告)号：US11721044B2

公开(公告)日：2023-08-08

申请号：US17612808

申请日：2020-05-26

Applicant: InterDigital VC Holdings, Inc.

Inventor： Julien Fleureau ,  Gerard Briand ,  Renaud Dore

IPC: G06T9/00 ,  G06T15/20 ,  G06T15/50

CPC classification number: G06T9/00 ,  G06T15/20 ,  G06T15/503

Abstract: Generating an image from a source image can involve encoding a projection of a part of a three-dimensional scene. Pixels of a source image comprise a depth and a color attribute. Pixels of a source image are de-projected as colored point cloud. A de-projected point in a 3D space has the color attribute of the pixel that it has been de-projected from. Also, a score is attributed to the generated point according to a local depth gradient and/or a local color gradient of the pixel it comes from, the lower the gradient, the higher the score. The generated point cloud is captured by a virtual camera for rendering on a display device. The point cloud is projected onto the viewport image by blending color of points projected on a same pixel, the blending being weighted by the scores of these points.

公开(公告)号：US10891784B2

公开(公告)日：2021-01-12

申请号：US16477620

申请日：2018-01-08

Applicant: InterDigital VC Holdings, Inc.

Inventor： Renaud Dore ,  Franck Galpin ,  Gerard Briand ,  Julien Fleureau

IPC: G06T17/00 ,  G06T7/50 ,  G06T7/90 ,  H04N19/597

Abstract: Method and device for generating a stream of data representative of a 3D point cloud. The 3D point cloud is partitioned into a plurality of 3D elementary parts. A set of two-dimensional 2D parametrizations is determined, each 2D parametrization representing one 3D part of the point cloud with a set of parameters. Each 3D part is represented as a 2D pixel image. A depth map and a color map are determined as a first patch atlas and a second patch atlas. A data stream is generated by combining and/or coding the parameters of the 2D parametrization, the first patch atlas, the second patch atlas and mapping information that links each 2D parametrization with its associated depth map and color map in respectively the first and second patch atlas.

公开(公告)号：US12273499B2

公开(公告)日：2025-04-08

申请号：US16647517

申请日：2018-09-11

Applicant: InterDigital VC Holdings, Inc.

Inventor： Renaud Dore ,  Julien Fleureau ,  Bertrand Chupeau ,  Gerard Briand ,  Thierry Tapie ,  Franck Thudor

IPC: H04N13/161 ,  G06T9/00 ,  G06T15/20 ,  H04N13/122 ,  H04N13/15 ,  H04N13/178 ,  H04N19/597

Abstract: A sequence of three-dimension scenes is encoded as a video by an encoder and transmitted to a decoder which retrieves the sequence of 3D scenes. Points of a 3D scene visible from a determined point of view are encoded as a color image in a first track of the stream in order to be decodable independently from other tracks of the stream. The color image is compatible with a three degrees of freedom rendering. Depth information and depth and color of residual points of the scene are encoded in separate tracks of the stream and are decoded only in case the decoder is configured to decode the scene for a volumetric rendering.

公开(公告)号：US12073594B2

公开(公告)日：2024-08-27

申请号：US17260144

申请日：2019-06-24

Applicant: InterDigital VC Holdings, Inc.

Inventor： Julien Fleureau ,  Bertrand Chupeau ,  Gerard Briand ,  Renaud Dore ,  Thierry Tapie ,  Franck Thudor

IPC: G06T9/00 ,  G06T15/20 ,  G06T17/20

CPC classification number: G06T9/001 ,  G06T15/20 ,  G06T17/20

Abstract: A sequence of three-dimension scenes is encoded as a video by an encoder and transmitted to a decoder which retrieves the sequence of 3D scenes. Points of a 3D scene visible from a determined point of view are encoded as a color image in a first track of the stream in order to be decodable independently from other tracks of the stream. The color image is compatible with a three degrees of freedom rendering. Depth information and depth and color of residual points of the scene are encoded in separate tracks of the stream and are decoded only in case the decoder is configured to decode the scene for a volumetric rendering.