Patents Assigned to INTERDIGITAL VC HOLDINGS, INC.
  • Publication number: 20240357137
    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).
    Type: Application
    Filed: July 3, 2024
    Publication date: October 24, 2024
    Applicant: InterDigital VC Holdings, Inc.
    Inventors: Fabrice Leleannec, Tangi Poirier, Ya Chen, Philippe Bordes
  • Patent number: 12126803
    Abstract: An improvement in coding efficiency is achieved through restrictions on successive divisions of asymmetric splitting in advanced video coding algorithms, which frequently rely on splitting of a block of video data prior to coding using several transform sizes. Successive divisions of asymmetric splitting are forbidden if an equivalent split can be attained using triple splitting. In an embodiment, a video block is split using successive splits, but the second type of split is dependent on the first type of split.
    Type: Grant
    Filed: October 9, 2023
    Date of Patent: October 22, 2024
    Assignee: INTERDIGITAL VC HOLDINGS, INC.
    Inventors: Fabrice Leleannec, Tangi Poirier, Gagan Rath, Fabrice Urban
  • Patent number: 12126829
    Abstract: Overlapped block motion compensation (OBMC) may be performed for a current video block based on motion information associated with the current video block and motion information associated with one or more neighboring blocks of the current video block. Under certain conditions, some or all of these neighboring blocks may be omitted from the OBMC operation of the current block. For instance, a neighboring block may be skipped during the OBMC operation if the current video block and the neighboring block are both uni-directionally or bi-directionally predicted, if the motion vectors associated with the current block and the neighboring block refer to a same reference picture, and if a sum of absolute differences between those motion vectors is smaller than a threshold value. Further, OBMC may be conducted in conjunction with regular motion compensation and may use simplified filters than traditionally allowed.
    Type: Grant
    Filed: November 23, 2022
    Date of Patent: October 22, 2024
    Assignee: InterDigital VC Holdings, Inc.
    Inventors: Yan Zhang, Xiaoyu Xiu, Yuwen He, Yan Ye
  • Patent number: 12120307
    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 block size of the basic coding unit. The intra prediction is hierarchical layer intra prediction and is performed for the at least one large block by splitting from the large block size to the basic coding unit size.
    Type: Grant
    Filed: July 27, 2023
    Date of Patent: October 15, 2024
    Assignee: InterDigital VC Holdings, Inc.
    Inventors: Yunfei Zheng, Qian Xu, Xiaoan Lu, Peng Yin, Joel Sole Rojals, Adeel Abbas
  • Patent number: 12118700
    Abstract: A lower dynamic range visual content (21) of a virtual reality or VR scene represented in a curved shape form is adapted to a higher dynamic range display of the virtual reality scene. At least two planar key views (230) of the VR scene area obtained at least two parameter values (240) respectively associated with those planar key views are obtained, corresponding to at least one parameter adapted to expand a dynamic range of a visual content, and a higher dynamic range visual content (22) corresponding to the lower dynamic range visual content in at least part of the VR scene extending beyond the planar key views is determined, based on the parameter values. Applications to Inverse Tone Mapping.
    Type: Grant
    Filed: December 9, 2021
    Date of Patent: October 15, 2024
    Assignee: InterDigital VC Holdings, Inc.
    Inventors: Tania Pouli, Jonathan Kervec, Hassane Guermoud
  • Patent number: 12106526
    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.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: October 1, 2024
    Assignee: INTERDIGITAL VC HOLDINGS, INC.
    Inventors: Julien Ricard, Celine Guede, Yannick Olivier
  • Patent number: 12101472
    Abstract: A method and apparatus for performing intra prediction mode partitioning predicts pixels of a video coding block using a plurality of intra prediction modes over a plurality of regions of the video coding block. Predictions can be based on reference arrays using at least one reference line above the block to be coded and/or using at least one reference column to the left of the block to be coded. Different prediction modes are used in different regions of the coding block. In at least one embodiment, the video coding block is split into a plurality of partitions in addition to having a plurality of intra prediction modes over different regions of the block. Signaling enables a decoder to determine the number of regions within a coding block. In at least another embodiment, prediction modes allowable within regions of a video coding block differ by one angular position.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: September 24, 2024
    Assignee: INTERDIGITAL VC HOLDINGS, INC.
    Inventors: Fabien Racape, Gagan Rath, Fabrice Urban
  • Patent number: 12096032
    Abstract: Methods and apparatuses for signaling decoding data in a video bitstream, wherein one uses a syntax element indicating whether the decoding data are explicitly coded in the video bitstream or inferred from previous data of the video bitstream. A bitstream, a computer-readable storage medium and a computer program product are also described.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: September 17, 2024
    Assignee: InterDigital VC Holdings, Inc.
    Inventors: Philippe Bordes, Michel Kerdranvat, Edouard Francois
  • Patent number: 12094177
    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.
    Type: Grant
    Filed: January 27, 2020
    Date of Patent: September 17, 2024
    Assignee: INTERDIGITAL VC HOLDINGS, INC.
    Inventors: Celine Guede, Julien Ricard, Joan Llach
  • Patent number: 12093466
    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.
    Type: Grant
    Filed: October 14, 2022
    Date of Patent: September 17, 2024
    Assignee: InterDigital VC Holdings, Inc.
    Inventors: Tatu V. J. Harviainen, Marko Palviainen
  • Patent number: 12088841
    Abstract: Predicting a component of a current pixel belonging to a current sub-aperture image in a matrix of sub-aperture images captured by a sensor of a type I plenoptic camera can involve, first, determining a location on the sensor based on: a distance from an exit pupil of a main lens of the camera to a micro-lens array of the camera; a focal length of the main lens; a focal length of the micro-lenses of the micro-lens array; and a set of parameters of a model of the camera allowing for a derivation of a two-plane parameterization describing the field of rays corresponding to the pixels of the sensor; and, second, predicting the component based on one reference pixel belonging to a reference sub-aperture image in the matrix and located on the sensor in a neighborhood of the location.
    Type: Grant
    Filed: January 30, 2023
    Date of Patent: September 10, 2024
    Assignee: InterDigital VC Holdings, Inc.
    Inventors: Didier Doyen, Olivier Bureller, Guillaume Boisson
  • Patent number: 12086947
    Abstract: Described herein are systems and methods for maintaining color calibration using common objects. In an exemplary embodiment, an AR system includes a forward-facing camera, an AR display, a processor, and a user interface. The processor is configured to receive image data from the forward-facing camera and identify any known objects depicted in the image data. The processor then determines RGB information at least one test rendering of the identified known object and displays it via the AR display. Input from a user interface, indicating which of the at least one test renderings was a closest match to the real-world object, and a level of satisfaction with the match are received by the processor and used to update an AR display color calibration model. More test renderings may be iteratively provided to improve the accuracy of the calibration.
    Type: Grant
    Filed: July 19, 2022
    Date of Patent: September 10, 2024
    Assignee: InterDigital VC Holdings, Inc.
    Inventors: David Wyble, Patrick Igoe
  • Patent number: 12081744
    Abstract: A method and apparatus for performing a forward mapping function or its inverse is implemented through information conveyed in a bitstream to perform mapping. The information can be implemented in a uniform or non-uniform lookup table. A decoder can receive the information and derive the inverse function to be used. In one embodiment, a decoder receives information representative of an inverse mapping function and uses the information to implement an inverse mapping lookup table for intra coded picture portions and can derive a forward mapping lookup table to be used with an inverse mapping lookup table for inter coded picture portions.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: September 3, 2024
    Assignee: INTERDIGITAL VC HOLDINGS, INC.
    Inventors: Pierre Andrivon, Christophe Chevance, Edouard Francois
  • Patent number: 12075051
    Abstract: When dependent scalar quantization is used, the choice of the quantizer depends on the decoding of the preceding transform coefficient, and the entropy decoding of a transform coefficient depends on quantizer choice. To maintain high throughput in hardware implementations for transform coefficient entropy coding, several decision schemes of the scaler quantizer are proposed. In one implementation, the state transition and the context model selection are based on only regular coded bins. For example, the state transition can be based on the sum of the SIG, gt1 and gt2 flags, the exclusive-or function of the SIG, gt1 and gt2 flags, or based on only the gt1 or gt2 flag. When a block of transform coefficients is coded, the regular mode bins can be coded first in one or more scan passes, and the remaining bypass coded bins are grouped together in another one or more scan passes.
    Type: Grant
    Filed: August 21, 2023
    Date of Patent: August 27, 2024
    Assignee: InterDigital VC Holdings, Inc.
    Inventors: Ya Chen, Fabrice Leleannec, Tangi Poirier, Philippe De Lagrange
  • Patent number: 12073594
    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.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: August 27, 2024
    Assignee: INTERDIGITAL VC HOLDINGS, INC.
    Inventors: Julien Fleureau, Bertrand Chupeau, Gerard Briand, Renaud Dore, Thierry Tapie, Franck Thudor
  • Patent number: 12067695
    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.
    Type: Grant
    Filed: April 10, 2023
    Date of Patent: August 20, 2024
    Assignee: INTERDIGITAL VC HOLDINGS, INC.
    Inventors: Julien Ricard, Celine Guede, Jean-Claude Chevet, David Gendron, Yannick Olivier, Joan Llach
  • Patent number: 12063376
    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).
    Type: Grant
    Filed: May 15, 2023
    Date of Patent: August 13, 2024
    Assignee: InterDigital VC Holdings, Inc.
    Inventors: Fabrice Le Léannec, Tangi Poirier, Ya Chen, Philippe Bordes
  • Patent number: 12056864
    Abstract: The present disclosure relates to a method and device for obtaining a second image from a first image when the dynamic range of the luminance of the first image is greater than the dynamic range of the luminance of the second image. The disclosure describes deriving at least one component representative of the colors of the second image from the first image, and maximizing at least one derived component according to a maximum value depending on a linear-light luminance component of the first image.
    Type: Grant
    Filed: July 12, 2023
    Date of Patent: August 6, 2024
    Assignee: INTERDIGITAL VC HOLDINGS, INC.
    Inventors: Robin Le Naour, David Touze, Catherine Serre
  • Patent number: 12052432
    Abstract: A method for decoding a picture block is disclosed. The decoding method comprises: —decoding (10) at least one stream S_diff into decoded data and into one information for identifying a re-constructed reference picture in a decoder picture buffer; —reconstructing (12) a special reference picture from at least the identified reconstructed reference picture and from the decoded data; —reconstructing (16) the picture block from at least the special reference picture, wherein the at least the special reference picture is not displayed.
    Type: Grant
    Filed: July 17, 2023
    Date of Patent: July 30, 2024
    Assignee: INTERDIGITAL VC HOLDINGS, INC.
    Inventors: Philippe Bordes, Franck Hiron, Pierre Andrivon, Patrick Lopez, Philippe Salmon
  • Patent number: 12052439
    Abstract: Methods and apparatus are provided for improved entropy encoding and decoding. An apparatus includes a video encoder (200) for encoding at least a block in a picture by transforming a residue of the block to obtain transform coefficients, quantizing the transform coefficients to obtain quantized transform coefficients, and entropy coding the quantized transform coefficients. The quantized transform coefficients are encoded using a flag to indicate that a current one of the quantized transform coefficients being processed is a last non-zero coefficient for the block having a value greater than or equal to a specified value.
    Type: Grant
    Filed: May 3, 2023
    Date of Patent: July 30, 2024
    Assignee: INTERDIGITAL VC HOLDINGS, INC.
    Inventors: Yang Hu, Joel Sole, Xiaoan Lu, Peng Yin, Yunfei Zheng