公开(公告)号：US11765397B2

公开(公告)日：2023-09-19

申请号：US16754028

申请日：2018-10-03

Applicant: InterDigital VC Holdings, Inc.

Inventor： Julien Ricard ,  Sebastien Lasserre ,  Celine Guede

IPC: H04N19/96 ,  H04N19/147 ,  H04N19/186 ,  G06T9/40

CPC classification number: H04N19/96 ,  G06T9/40 ,  H04N19/147 ,  H04N19/186

Abstract: The present principles a method and a device for encoding the colors of a point cloud (IPC) representing a 3D object. The method is characterized in that the method comprises: —obtaining (210) a set of points (SP) approximating the geometry of said point cloud (IPC); —encoding (220) a color information data indicating that the color of at least one of the point of said set of points is encoded in a bitstream and that the colors of the other points of said set of points are not encoded in the bitstream. The present principles also relates to a method and a device for decoding the colors of a point cloud.

公开(公告)号：US11856222B2

公开(公告)日：2023-12-26

申请号：US17046630

申请日：2019-04-01

Applicant: InterDigital VC Holdings, Inc.

Inventor： Julien Ricard ,  Joan Llach Pinsach ,  Kangying Cai

IPC: H04N19/597 ,  G06T9/00 ,  G06T17/00

CPC classification number: H04N19/597 ,  G06T9/00 ,  G06T17/00

Abstract: This method comprises: —orthogonally projecting at least one point of a point cloud along projection lines; and —for at least two points of a same projection line, signaling in a bitstream whether a position of said projection line between a nearer and a farther points of said projection line is occupied or not.

公开(公告)号：US12132935B2

公开(公告)日：2024-10-29

申请号：US17428878

申请日：2020-01-10

Applicant: InterDigital VC Holdings, Inc.

Inventor： Celine Guede ,  Julien Ricard ,  Joan Llach

IPC: H04N19/70 ,  H04N21/234 ,  H04N21/235 ,  H04N21/435 ,  H04N21/44 ,  H04N21/81 ,  H04N21/845 ,  H04N21/854

CPC classification number: H04N19/70 ,  H04N21/2353 ,  H04N21/816

Abstract: At least one embodiment relates to a method for transmitting PLRM metadata that removes the dependency between PLRM metadata and the occupancy map and the bloc to patch information BlockToPatch.

公开(公告)号：US12067695B2

公开(公告)日：2024-08-20

申请号：US18132939

申请日：2023-04-10

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： Julien Ricard ,  Celine Guede ,  Jean-Claude Chevet ,  David Gendron ,  Yannick Olivier ,  Joan Llach

IPC: G06T3/4007 ,  G06T3/06 ,  G06T9/00

CPC classification number: G06T3/4007 ,  G06T3/06 ,  G06T9/001

Abstract: The present embodiments relate to a method and device. The method comprises obtaining at least one first point from at least one point of a point cloud by projecting said point of the point cloud onto a projection plane and obtaining at least one other point of the point cloud determined according to said at least one first point; determining and encoding at least one interpolation coding mode for said at least one first point based on at least one reconstructed point obtained from said at least one first point and at least one interpolation point defined by said at least one interpolation coding mode to approximate said at least one other point of the point cloud; and signaling said at least interpolation coding mode as values of image data.

公开(公告)号：US11900639B2

公开(公告)日：2024-02-13

申请号：US16962908

申请日：2019-01-21

Applicant: InterDigital VC Holdings, Inc.

Inventor： Julien Ricard ,  Celine Guede ,  Yannick Olivier ,  Joan Llach Pinsach ,  David Gendron

IPC: G06K9/36 ,  G06T9/00 ,  H04N19/184 ,  H04N19/186

CPC classification number: G06T9/00 ,  H04N19/184 ,  H04N19/186

Abstract: At least one embodiment relates to a method for adding at least one 3D sample to a point cloud frame and for assigning a color-coding mode to said at least one 3D sample, said color-coding mode indicating if color information associated with said at least one 3D sample is explicitly encoded in a bitstream or if said color information is implicit.

公开(公告)号：US11769275B2

公开(公告)日：2023-09-26

申请号：US16755635

申请日：2018-10-11

Applicant: InterDigital VC Holdings, Inc.

Inventor： Sebastien Lasserre ,  Saurabh Puri ,  Kangying Cai ,  Julien Ricard ,  Celine Guede

IPC: G06T9/00 ,  G06F17/16 ,  G06T3/00

CPC classification number: G06T9/00 ,  G06F17/16 ,  G06T3/0006

Abstract: This method for inter-predictive encoding of a time-varying 3D point cloud including a series of successive frames divided in 3D blocks into at least one bitstream comprises encoding (20) 3D motion information including a geometric transformation comprising rotation information representative of a rotation transformation and translation information representative of a translation transformation, wherein the translation information comprises a vector ΔT representing an estimation error of the translation transformation.

公开(公告)号：US11756234B2

公开(公告)日：2023-09-12

申请号：US17046653

申请日：2019-04-09

Applicant: InterDigital VC Holdings, Inc.

Inventor： Julien Ricard ,  Celine Guede ,  Yannick Olivier ,  Joan Llach Pinsach

IPC: G06T9/00

CPC classification number: G06T9/001

Abstract: At least one embodiment relates to a method comprising encoding a projection mode associated with an image region of a first depth image, said projection mode indicating if said image region stores either the minimum or the maximum depth value of at least one orthogonally projected 3D point of the point cloud along a same projection direction; and encoding said depth minimum and maximum depth values as a function of said projection mode.

公开(公告)号：US11533505B2

公开(公告)日：2022-12-20

申请号：US17258694

申请日：2019-07-11

Applicant: InterDigital VC Holdings, Inc.

Inventor： Julien Ricard ,  Celine Guede ,  Joan Llach

IPC: H04N19/20 ,  H04N19/59 ,  H04N19/186 ,  G06T9/00

Abstract: A method and device for point cloud compression are provided. A bitstream is generated that comprises color information data representative of a texture image from which points of the point cloud are colorized when reconstructing the point cloud. The bitstream also comprises an interpolation texture coding mode indicating that texture interpolation has to be done on points of the reconstructed point cloud that are not colorized from the texture image.

公开(公告)号：US12223683B2

公开(公告)日：2025-02-11

申请号：US18225704

申请日：2023-07-25

Applicant: InterDigital VC Holdings, Inc.

Inventor： Julien Ricard ,  Celine Guede ,  Yannick Olivier ,  Joan Llach Pinsach

IPC: G06T9/00

Abstract: At least one embodiment relates to a method comprising encoding a projection mode associated with an image region of a first depth image, said projection mode indicating if said image region stores either the minimum or the maximum depth value of at least one orthogonally projected 3D point of the point cloud along a same projection direction; and encoding said depth minimum and maximum depth values as a function of said projection mode.

公开(公告)号：US12106526B2

公开(公告)日：2024-10-01

申请号：US17259040

申请日：2019-07-10

Applicant: InterDigital VC Holdings, Inc.

Inventor： Julien Ricard ,  Celine Guede ,  Yannick Olivier

IPC: G06K9/00 ,  G06T7/50 ,  G06T9/00

CPC classification number: G06T9/00 ,  G06T7/50 ,  G06T2207/10028

Abstract: At least a method and an apparatus are presented for efficiently encoding or decoding video. For example, a 2-D patch of the point cloud is obtained by projecting 3-D points of the point cloud onto a projection plane, the patch having a plurality of pixels. The patch is divided into a plurality of smaller blocks. The number of pixels is determined within each of the plurality of smaller blocks. An updated occupancy map is obtained based on the determined number of pixels within each of the plurality of smaller blocks. A reconstructed point cloud is obtained based on the updated occupancy map, wherein the reconstructed point cloud is a less dense representation of the point cloud.