公开(公告)号：US20240430433A1

公开(公告)日：2024-12-26

申请号：US18830023

申请日：2024-09-10

Applicant: InterDigital VC Holdings, Inc.

Inventor： Yunfei Zheng ,  Qian Xu ,  Xiaoan Lu ,  Peng Yin ,  Joel Sole Rojals ,  Adeel Abbas

IPC: H04N19/136 ,  H04N19/11 ,  H04N19/147 ,  H04N19/157 ,  H04N19/159 ,  H04N19/176 ,  H04N19/196 ,  H04N19/46 ,  H04N19/463 ,  H04N19/593 ,  H04N19/70 ,  H04N19/96

Abstract: Methods and apparatus are provided for signaling intra prediction for large blocks for video encoders and decoders. An apparatus includes a video encoder for encoding picture data for at least one large block in a picture by signaling intra prediction for the at least one large block. The intra prediction is signaled by selecting a basic coding unit size and assigning a single spatial intra partition type for the basic coding unit size. The single spatial intra partition type is selectable from among a plurality of spatial intra partition types. The at least one large block has a large block size greater than a basic coding unit size. The intra prediction may be performed for the at least one large block by at least one of splitting from the large block size to the basic coding unit size.

公开(公告)号：US12167035B2

公开(公告)日：2024-12-10

申请号：US18112234

申请日：2023-02-21

Applicant: InterDigital VC Holdings, Inc.

Inventor： Xiaoyu Xiu ,  Yuwen He ,  Yan Ye

IPC: H04N19/597 ,  G06T3/00 ,  G06T3/16 ,  H04N19/12 ,  H04N19/61

Abstract: A system, method, and/or instrumentality may be provided for coding a 360-degree video. A picture of the 360-degree video may be received. The picture may include one or more faces associated with one or more projection formats. A first projection format indication may be received that indicates a first projection format may be associated with a first face. A second projection format indication may be received that indicates a second projection format may be associated with a second face. Based on the first projection format, a first transform function associated with the first face may be determined. Based on the second projection format, a second transform function associated with the second face may be determined. At least one decoding process may be performed on the first face using the first transform function and/or at least one decoding process may be performed on the second face using the second transform function.

公开(公告)号：US12160555B2

公开(公告)日：2024-12-03

申请号：US17629242

申请日：2020-07-14

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： Bertrand Chupeau ,  Gérard 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：US12143637B2

公开(公告)日：2024-11-12

申请号：US18539475

申请日：2023-12-14

Applicant: INTERDIGITAL VC HOLDINGS, INC.

Inventor： Fabrice Leleannec ,  Franck Galpin ,  Tangi Poirier

IPC: H04N19/61 ,  H04N19/105 ,  H04N19/119 ,  H04N19/13 ,  H04N19/176

Abstract: A coding unit having a size multiple of three in horizontal or vertical direction is coded through one of several embodiments. In one embodiment, for some block sizes, the coding unit is coded and decoded systematically through SKIP mode. In another embodiment, the coding units can be coded in SKIP mode or with a DC coefficient. In another embodiment, an asymmetric division of a common coding unit parent is performed and transform coefficients are factorized among at least two sub-blocks to encode a coding unit. In another embodiment, a separable two dimensional transform can be applied by applying a transform over the block in one direction, and using two one-dimensional transforms on sub-blocks in the other direction to code. Methods, apparatus, and signal embodiments are provided for encoding and decoding.

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：US20240357137A1

公开(公告)日：2024-10-24

申请号：US18763497

申请日：2024-07-03

Applicant: InterDigital VC Holdings, Inc.

Inventor： Fabrice Leleannec ,  Tangi Poirier ,  Ya Chen ,  Philippe Bordes

IPC: H04N19/186 ,  H04N19/136 ,  H04N19/176

CPC classification number: H04N19/186 ,  H04N19/136 ,  H04N19/176

Abstract: A Local illumination compensation system for video encoding and decoding uses memory for storing illumination compensation parameters and does not require access to reconstructed pixels of neighboring blocks. A set of illumination compensation parameters is stored in a dedicated buffer, which is of limited size, and which is decoupled from the coding unit level storage of information. The buffer contains a set of illumination compensation parameters, which may be, for example, computed (or determined in some other manner) on the fly or determined beforehand (for example for example obtained from the video signal or from a device).

公开(公告)号：US20240314337A1

公开(公告)日：2024-09-19

申请号：US18637693

申请日：2024-04-17

Applicant: InterDigital VC Holdings, Inc.

Inventor： Edouard FRANCOIS ,  Fabrice LELEANNEC ,  Tangi POIRIER

IPC: H04N19/186 ,  H04N19/119 ,  H04N19/176

CPC classification number: H04N19/186 ,  H04N19/119 ,  H04N19/176

Abstract: A cross-component dependent tool to be used for a chroma block of a picture is enabled responsive to a size of said chroma block and to a size of at least one luma block co-located with the chroma block. Then, the chroma block is decoded responsive to said enablement of said cross-component dependent tool. A encoding and decoding methods are presented as well as encoding and decoding devices.

公开(公告)号：US20240310914A1

公开(公告)日：2024-09-19

申请号：US18671678

申请日：2024-05-22

Applicant: InterDigital VC Holdings, Inc.

Inventor： Pascal Fortin ,  Jeremy Cooperstock ,  Sanghoon Kim

IPC: G06F3/01 ,  G06Q30/0251

CPC classification number: G06F3/015 ,  G06F3/013 ,  G06Q30/0255

Abstract: In example embodiments, a method includes obtaining a first measurement of at least a first physiological parameter of a user from a time before presentation of an information item to the user. The information item may be, for example, a notification, an advertisement, or an emergency alert, among other possibilities. A second measurement of the first physiological parameter is obtained from a time after a beginning of the presentation of the information item to the user (e.g. during the presentation). Based at least on a comparison between the first and second measurements, a determination is made of whether the user has perceived the information item. The determination may also be based on a corruption coefficient indicating an amount by which an activity of the user is likely to interfere with the first physiological parameter.

公开(公告)号：US12093466B2

公开(公告)日：2024-09-17

申请号：US17966532

申请日：2022-10-14

Applicant: InterDigital VC Holdings, Inc.

Inventor： Tatu V. J. Harviainen ,  Marko Palviainen

IPC: G06F3/01 ,  H04L67/131

CPC classification number: G06F3/017 ,  G06F3/013 ,  H04L67/131

Abstract: Some embodiments of a method may include tracking a distance between a local VR device and a remote VR device; selecting an experience-sharing mode from a plurality of experience-sharing modes based on the tracked distance; and providing a different degree of immersive user experience to a user at the local VR device depending on the selected experience-sharing mode, wherein as the distance between the local VR device and the remote VR device decreases, the experience-sharing mode changes and the degree of immersive user experience increases. Some embodiments of another method may include detecting a gesture made by a user; selecting an immersiveness mode from a plurality of immersiveness modes based on the detected gesture; and providing a degree of immersive user experience to a local VR device user depending on the selected immersiveness mode.