公开(公告)号：US20250029284A1

公开(公告)日：2025-01-23

申请号：US18902866

申请日：2024-09-30

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： Joan Llach ,  Celine Guede ,  Jean-Claude Chevet

IPC: G06T9/00

Abstract: At least one embodiment relates to a method assigning a pixel value of an occupancy map either indicates that a depth value of at least one 3D sample of a point cloud frame projected along a same projection line is stored as a pixel value of at least one layer or equals a fixed-length codeword representing a depth value of at least one 3D sample projection along said projection line.

公开(公告)号：US12094177B2

公开(公告)日：2024-09-17

申请号：US17439171

申请日：2020-01-27

Applicant: InterDigital VC Holdings, Inc.

Inventor： Celine Guede ,  Julien Ricard ,  Joan Llach

IPC: G06K9/00 ,  G06T9/00 ,  H04N19/184 ,  H04N19/70

CPC classification number: G06T9/00 ,  H04N19/184 ,  H04N19/70

Abstract: At least one embodiment relates to a method for signaling a syntax element representing a Point Local Reconstruction mode, said Point Local Reconstruction mode being representative of at least one parameter defining a mode for reconstructing at least one point of a point cloud frame.

公开(公告)号：US11625809B2

公开(公告)日：2023-04-11

申请号：US17259058

申请日：2019-06-28

Applicant: InterDigital VC Holdings, Inc.

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

IPC: G06T3/40 ,  G06T3/00 ,  G06T9/00

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：US10715834B2

公开(公告)日：2020-07-14

申请号：US14870484

申请日：2015-09-30

Applicant: InterDigital VC Holdings, Inc.

Inventor： Cristina Gomila ,  Joan Llach

IPC: H04N19/46 ,  H04N19/85 ,  H04N19/117 ,  H04N19/136 ,  H04N19/18 ,  H04N19/80 ,  H04N19/44 ,  H04N19/48

Abstract: Film grain simulation within a receiver (11) occurs by first obtaining at least one block of pre-computed transformed coefficients. The block of pre-computed transformed coefficients undergoes filtering responsive to a frequency range that characterizes a desired pattern of the film grain. In practice, the frequency range lies within a set of cut frequencies fHL, fVL, fHH and fVH of a filter in two dimensions that characterizes a desired film grain pattern. Thereafter, the filtered set of coefficients undergoes an inverse transform to yield the film grain pattern.

公开(公告)号：US20220005231A1

公开(公告)日：2022-01-06

申请号：US17282496

申请日：2019-10-04

Applicant: InterDigital VC Holdings, Inc.

Inventor： Julien Ricard ,  Celine Guede ,  Joan Llach

IPC: G06T9/00 ,  G06T17/20 ,  G06K9/62

Abstract: The present embodiments relate to a method for encoding 3D points whose geometry is represented by geometry images and attribute is represented by an attribute image. The method checks whether the depth value of a pixel in a first of said geometry images and the depth value of a co-located pixel in a second of said geometry images are not the same (not identical values). When the depth value of a pixel in said first geometry image and the depth value of the co-located pixel in said second geometry image are not the same, then the method assigns (encodes), attribute of a 3D point defined from 2D spatial coordinates of said pixel in said first geometry image and the depth value of said co-located pixel in the second geometry image.

公开(公告)号：US12136243B2

公开(公告)日：2024-11-05

申请号：US17439707

申请日：2020-01-27

Applicant: InterDigital VC Holdings, Inc.

Inventor： Joan Llach ,  Celine Guede ,  Jean-Claude Chevet

IPC: G06T9/00

Abstract: At least one embodiment relates to a method assigning a pixel value of an occupancy map either indicates that a depth value of at least one 3D sample of a point cloud frame projected along a same projection line is stored as a pixel value of at least one layer or equals a fixed-length codeword representing a depth value of at least one 3D sample projection along said projection line.

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：US11915456B2

公开(公告)日：2024-02-27

申请号：US17282555

申请日：2019-10-04

Applicant: InterDigital VC Holdings, Inc.

Inventor： Yannick Olivier ,  Jean-Claude Chevet ,  Joan Llach

IPC: G06T9/00 ,  G06T7/10

CPC classification number: G06T9/001 ,  G06T7/10 ,  G06T2207/20021

Abstract: A method and apparatus of encoding/decoding attributes of points of a pint cloud are provided. The encoding method subdivides a bounding box bounding the points to be encoded, encodes data representative of attributes of a point by referring to a subdivision to which said point belongs to; and encode data representative of a number of points comprised in each subdivision.

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.