Patents Assigned to INTERDIGITAL VC HOLDINGS, INC.
  • Processing an image
    Patent number: 11785193
    Abstract: At least one embodiment obtain a method for reconstructing an image from metadata representing a given color space, comprising mapping said given color space to a candidate color space which encompasses in its convex hull all the primaries of the given color space; and reconstructing the image using said candidate color space.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: October 10, 2023
    Assignee: InterDigital VC Holdings, Inc.
    Inventors: Pierre Andrivon, David Touze, Catherine Serre
  • Multiple predictor candidates for motion compensation
    Patent number: 11785250
    Abstract: Different implementations are described, particularly implementations for selecting a predictor candidate from a set of multiple predictor candidates for motion compensation of a picture block based on a motion model. The motion model, may be, e.g., an affine model in a merge mode for a video content encoder or decoder. In an embodiment, a predictor candidate is selected from the set based on a motion model for each of the multiple predictor candidates, and may be based on a criterion such as, e.g., a rate distortion cost. The corresponding motion field is determined based on, e.g., one or more corresponding control point motion vectors for the block being encoded or decoded. The corresponding motion field of an embodiment identifies motion vectors used for prediction of sub-blocks of the block being encoded or decoded.
    Type: Grant
    Filed: December 21, 2021
    Date of Patent: October 10, 2023
    Assignee: InterDigital VC Holdings, Inc.
    Inventors: Antoine Robert, Fabrice Leleannec, Tangi Poirier
  • Methods and apparatus for video usability information (VUI) for scalable video coding (SVC)
    Patent number: 11785230
    Abstract: There are provided methods and apparatus for video usability information (VUI) for scalable video coding (SVC). An apparatus includes an encoder (100) for encoding video signal data into a bitstream. The encoder specifies video user information, excluding hypothetical reference decoder parameters, in the bitstream using a high level syntax element. The video user information corresponds to a set of interoperability points in the bitstream relating to scalable video coding (340, 355).
    Type: Grant
    Filed: February 16, 2022
    Date of Patent: October 10, 2023
    Assignee: InterDigital VC Holdings, Inc.
    Inventors: Jiancong Luo, Lihua Zhu, Peng Yin
  • Method and device for intra-predictive encoding/decoding a coding unit comprising picture data, said intra-predictive encoding depending on a prediction tree and a transform tree
    Patent number: 11778190
    Abstract: The present principles relates to a method for intra-predictive encoding a coding unit comprising picture data, said intra-predictive encoding depending on a prediction tree and a transform tree, characterized in that the method further comprises: —obtaining said prediction tree by spatially partitioning the coding unit according to a non-square partition type; —determining said transform tree from said coding unit in order that each of its leaves is embedded into a unique unit of said obtained prediction tree; and —signaling in a signal the size of the leaves of said transform tree and said a non-square partition type.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: October 3, 2023
    Assignee: InterDigital VC Holdings, Inc.
    Inventors: Fabrice Le Leannec, Tangi Poirier, Gagan Rath, Fabrice Urban
  • Scalar quantizer decision scheme for dependent scalar quantization
    Patent number: 11778188
    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: June 1, 2022
    Date of Patent: October 3, 2023
    Assignee: InterDigital VC Holdings, Inc.
    Inventors: Ya Chen, Fabrice Leleannec, Tangi Poirier, Philippe De Lagrange
  • Method and device for predictive encoding/decoding of a point cloud
    Patent number: 11769275
    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 ?T representing an estimation error of the translation transformation.
    Type: Grant
    Filed: October 11, 2018
    Date of Patent: September 26, 2023
    Assignee: INTERDIGITAL VC HOLDINGS, INC.
    Inventors: Sebastien Lasserre, Saurabh Puri, Kangying Cai, Julien Ricard, Celine Guede
  • Method and apparatus for encoding/decoding the colors of a point cloud representing a 3D object
    Patent number: 11765397
    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.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: September 19, 2023
    Assignee: InterDigital VC Holdings, Inc.
    Inventors: Julien Ricard, Sebastien Lasserre, Celine Guede
  • ENCODING AND DECODING METHODS AND CORRESPONDING DEVICES
    Publication number: 20230291922
    Abstract: A decoding method is disclosed. First, context for a syntax clement associated with a current transform coefficient of a block of a picture is determined. The context is determined based on the area of said block, on the position of the current transform coefficient within the block and on the number of non-zero neighboring transform coefficients in a local template. Second, the syntax element is decoded based at least on the determined context. Advantageously, the local template depends on the shape of said block.
    Type: Application
    Filed: May 18, 2023
    Publication date: September 14, 2023
    Applicant: InterDigital VC Holdings, Inc.
    Inventors: Fabrice Leleannec, Tangi Poirier, Ya Chen
  • In-loop filter with multiple regions
    Patent number: 11758197
    Abstract: Methods and apparatus for performing in-loop filtering in an encoder or a decoder provide regions which use a common set of filter parameters An index can be sent from an encoder to a decoder indicating which set of filter parameters is to be used for a particular region. The in-loop filter can be Sample Adaptive Offset, Adaptive Loop Filter, or any other such filter. An encoder classifies regions of a picture according to blocks using a common set of filter parameter. The classification can be in the form of a map. Filtering blocks use the common set of filter parameters for a region. A decoder parses a bitstream for a set of filter parameters and an index indicative of the filter parameter set for a region being decoded.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: September 12, 2023
    Assignee: INTERDIGITAL VC HOLDINGS, INC.
    Inventors: Fabien Racape, Philippe Bordes, Edouard Francois
  • Method for encoding depth values of a set of 3D points once orthogonally projected into at least one image region of a projection plane
    Patent number: 11756234
    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.
    Type: Grant
    Filed: April 9, 2019
    Date of Patent: September 12, 2023
    Assignee: InterDigital VC Holdings, Inc.
    Inventors: Julien Ricard, Celine Guede, Yannick Olivier, Joan Llach Pinsach
  • LOCAL ILLUMINATION COMPENSATION FOR VIDEO ENCODING AND DECODING USING STORED PARAMETERS
    Publication number: 20230283787
    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: May 15, 2023
    Publication date: September 7, 2023
    Applicant: InterDigital VC Holdings, Inc.
    Inventors: Fabrice Le Léannec, Tangi Poirier, Ya Chen, Philippe Bordes
  • Virtual temporal affine candidates
    Patent number: 11750836
    Abstract: Methods and apparatus for creating additional affine candidates. Virtual and temporal candidates are determined using neighboring spatial and temporal sub-blocks. The sub-blocks are examined in an order known to both an encoder and a decoder. Valid sub-blocks are used to compute an affine model. The candidates can be filtered and added to a candidate list conditionally based on various criteria. The candidates can be used to determine control point motion vectors and a motion flow field can be determined. Motion vectors for sub-blocks within a video coding block can be determined. Motion compensation can be performed using the improved affine candidates and encoding/decoding based on the improved affine motion compensation.
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: September 5, 2023
    Assignee: INTERDIGITAL VC HOLDINGS, INC.
    Inventors: Franck Galpin, Antoine Robert, Fabrice Leleannec
  • Coding and decoding methods of a picture block, corresponding devices and data stream
    Patent number: 11750830
    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 reconstructed 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: December 21, 2022
    Date of Patent: September 5, 2023
    Assignee: InterDigital VC Holdings, Inc.
    Inventors: Philippe Bordes, Franck Hiron, Pierre Andrivon, Patrick Lopez, Philippe Salmon
  • 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
    Patent number: 11741585
    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: March 2, 2022
    Date of Patent: August 29, 2023
    Assignee: INTERDIGITAL VC HOLDINGS, INC.
    Inventors: Robin Le Naour, David Touze, Catherine Serre
  • Method and system for the detection and augmentation of tactile interactions in augmented reality
    Patent number: 11726557
    Abstract: Program actions may be initiated after detection of a predefined gesture by a user with a real-world object. Users may interact with their physical environment in an augmented reality by detecting interactions with real objects using a combination of location and motion detection, material identification using wearable sensors, or both. Based on detected sensor data from user interaction with a real-world object, a predefined gesture may be identified and a program action associated with that target interaction for the real-world object may be executed. In some cases, the user experience may be enhanced by providing haptic feedback in response to tactile gestures and resulting events.
    Type: Grant
    Filed: June 13, 2022
    Date of Patent: August 15, 2023
    Assignee: InterDigital VC Holdings, Inc.
    Inventor: Vincent Levesque
  • Generalized bi-prediction and weighted prediction
    Patent number: 11729417
    Abstract: A decoding method is presented. At least one high level syntax element is decoded that indicates whether generalized bi-prediction applies for predicting blocks of a slice. A block is then decoded from said slice using generalized bi-prediction in the case where said at least one high level syntax element indicates to apply generalized bi-prediction.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: August 15, 2023
    Assignee: InterDigital VC Holdings, Inc.
    Inventors: Philippe Bordes, Fabrice Leleannec, Tangi Poirier, Philippe De Lagrange
  • Method for rendering of augmented reality content in combination with external display
    Patent number: 11727321
    Abstract: Systems and methods are described for improved color rendering. In some embodiments, video is captured of a real-world scene, and a region of screen content is detected in the captured video. A processor selectively applies a screen-content color transformation on the region of screen content to generate processed video, and the processed video is displayed substantially in real time, for example on a video-see-through head-mounted display. The screen-content color processing may be different for different types of external displays. The screen-content color processing may also be determined based at least in part on illumination conditions. In some embodiments, the color of displayed virtual objects is adjusted based on visual parameters of the screen content.
    Type: Grant
    Filed: May 22, 2020
    Date of Patent: August 15, 2023
    Assignee: InterDigital VC Holdings Inc.
    Inventors: David Wyble, Louis Kerofsky, Ralph Neff
  • Method and apparatus for encoding and decoding HDR images
    Patent number: 11727548
    Abstract: To encode High Dynamic Range (HDR) images, the HDR images can be converted to Low Dynamic Range (LDR) images through tone mapping operation, and the LDR images can be encoded with an LDR encoder. The present principles formulates a rate distortion minimization problem when designing the tone mapping curve. In particular, the tone mapping curve is formulated as a function of the probability distribution function of the HDR images to be encoded and a Lagrangian multiplier that depends on encoding parameters. At the decoder, based on the parameters indicative of the tone mapping function, an inverse tone mapping function can be derived to reconstruct HDR images from decoded LDR images.
    Type: Grant
    Filed: February 6, 2020
    Date of Patent: August 15, 2023
    Assignee: InterDigital VC Holdings, Inc.
    Inventors: Mikael Le Pendu, Ronan Boitard, Christine Guillemot, Dominique Thoreau
  • Method and apparatus for video encoding and decoding based on a linear model responsive to neighboring samples
    Patent number: 11722694
    Abstract: Different implementations are described, particularly implementations for video encoding and decoding based on a linear model responsive to neighboring samples are presented. Accordingly, for a block being encoded or decoded in a picture, at least one spatial neighboring template is determined and at least one linear model parameter is determined based on reconstructed samples of the at least one spatial neighboring template. In a first embodiment, the number N of reconstructed samples corresponds to N=2k with k chosen so that n is the maxim integer smaller than sum of the block width and block height. In a second embodiment, the an offset for the relative position of a first sample in the template among samples of a left, respectively top, neighboring line of the block is determined. In a third embodiment, the number of reconstructed samples is set to a higher number in the larger dimension of the block.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: August 8, 2023
    Assignee: InterDigital VC Holdings, Inc.
    Inventors: Franck Galpin, Tangi Poirier, Philippe Bordes, Fabrice Leleannec, Fabien Racape
  • Decoding an image
    Patent number: 11722704
    Abstract: A method for decoding an image enables to preserve artistic intent at the final rendering stage by adjusting the image to luminance characteristics of the content and of the presentation display that will display the image. Values representative of luminance of both the image and the display device are obtained. Parameters of a display adaptation function are adjusted according to these values and the adjusted display adaptation function is used to decode the image. In at least one embodiment, the adjusted display adaptation function relates to a tone mapping function. Corresponding apparatus implementing the method is also described.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: August 8, 2023
    Assignee: InterDigital VC Holdings, Inc.
    Inventors: Pierre Andrivon, Marie-Jean Colaitis, David Touze