Patents Examined by Mainul Hasan
  • Patent number: 11871009
    Abstract: An image decoding method performed by a decoding apparatus according to the present document comprises the steps of: deriving prediction samples for a first sample and a second sample of the current block on the basis of BDPCM-related information about the current block and neighboring samples of the current block; deriving residual samples for the first sample and the second sample on the basis of a residual coefficient of the first sample and a modified residual coefficient of the second sample; and storing, as the intra prediction mode of the current block, the intra prediction mode in the prediction direction of the current block, which is derived on the basis of a BDPCM direction flag.
    Type: Grant
    Filed: January 18, 2023
    Date of Patent: January 9, 2024
    Assignee: LG ELECTRONICS INC.
    Inventors: Sunmi Yoo, Junghak Nam, Jungah Choi
  • Patent number: 11856236
    Abstract: A device may be configured to signal sequence parameter information according to one or more of the techniques described herein. The sequence parameter set information may include in its second byte a syntax element specifying a chroma sampling relative to a luma sampling and a syntax element specifies a luma coding tree block size of each coding tree unit.
    Type: Grant
    Filed: October 6, 2022
    Date of Patent: December 26, 2023
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Sachin G. Deshpande
  • Patent number: 11843786
    Abstract: An image decoding method according to the present document can comprise the steps of: on the basis of first flag information indicating whether or not matrix-based intra prediction (MIP) can be applied to a current block, receiving second flag information indicating whether or not the MIP is used for the current block; receiving matrix-based intra prediction (MIP) mode information on the basis of the second flag information; generating intra prediction samples for the current block on the basis of the MIP mode information; and generating reconstructed samples for the current block on the basis of the intra prediction samples.
    Type: Grant
    Filed: January 9, 2023
    Date of Patent: December 12, 2023
    Assignee: LG ELECTRONICS INC.
    Inventors: Mehdi Salehifar, Seunghwan Kim
  • Patent number: 11838496
    Abstract: An eye tracking system includes a pair of glasses including two frames; a light scanning projector coupled to the pair of glasses and operable to scan a beam of light to project an image frame including a plurality of pixels; an eyepiece mounted in one of the two frames and optically coupled to the light scanning projector; one or more photodetectors coupled to one of the two frames and operable to detect time-varying reflected signals; and a processor coupled to the light scanning projector and the photodetectors. The eyepiece includes an exit pupil expander operable to direct a portion of the beam of light towards an eye of a user. Each of the time-varying reflected signals is associated with the plurality of pixels. The processor is operable to correlate the time-varying reflected signals with the plurality of pixels and determine a first eye orientation.
    Type: Grant
    Filed: May 3, 2021
    Date of Patent: December 5, 2023
    Assignee: Magic Leap, Inc.
    Inventors: Brian T Schowengerdt, Mathew D. Watson, Samuel Scott Frank, Charles David Melville
  • Patent number: 11831879
    Abstract: Systems and methods are described herein for processing video. An encoder may generate, for a sequence of video frames, a plurality of first segments and a plurality of second segments. The plurality of first segments may comprise stream access points (SAPs) of a first type that do not reset a picture reference buffer. The plurality of second segments may comprise SAPs of a second type that do reset the picture reference buffer. The encoder may send segments of the plurality of first segments to a computing device streaming video when network conditions are steady. The encoder may send a segment of the plurality of second segments following a switch, by the computing device, to a different bitrate based on a change to the network conditions. Once the computing device has decoded the segment the plurality of second segments, the encoder may send subsequent first segments at the different bitrate.
    Type: Grant
    Filed: September 20, 2019
    Date of Patent: November 28, 2023
    Assignee: Comcast Cable Communications, LLC
    Inventor: Srinath V. Ramaswamy
  • Patent number: 11825097
    Abstract: A method for video processing is provided. The method includes determining, for a conversion between a current video block of a video that is a chroma block and a coded representation of the video, multiple sets of parameters, wherein each set of parameters defines a cross-component linear model (CCLM) and is derived from a corresponding group of chroma samples at corresponding chroma sample positions; determining, based on the multiple sets of parameters, parameters for a final CCLM; and performing the conversion based on the final CCLM.
    Type: Grant
    Filed: May 3, 2021
    Date of Patent: November 21, 2023
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD., BYTEDANCE INC.
    Inventors: Kai Zhang, Li Zhang, Hongbin Liu, Jizheng Xu, Yue Wang
  • Patent number: 11805275
    Abstract: Devices, systems and methods for digital video coding, which includes matrix-based intra prediction methods for video coding, are described. In a representative aspect, a method for video processing includes performing a first determination whether a luma video block of a video is coded using a matrix based intra prediction (MIP) mode; performing a second determination that the luma video block is applicable for determining a chroma intra mode for a current chroma video block of the video; performing, based on the first determination and the second determination, a third determination about the chroma intra mode to be used for the current chroma video block; and performing, based on the third determination, a conversion between the current chroma video block and a bitstream representation of the current chroma video block.
    Type: Grant
    Filed: November 1, 2021
    Date of Patent: October 31, 2023
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD, BYTEDANCE INC.
    Inventors: Zhipin Deng, Kai Zhang, Li Zhang, Hongbin Liu, Jizheng Xu
  • Patent number: 11805265
    Abstract: Methods and systems for providing content are described for receiving an encoding parameter associated with a first content transmission. The encoding parameter can indicate a level of complexity to encode the first content transmission. The method can comprise selecting, based on the encoding parameter, a second content transmission. The second content transmission can be encoded at a second bit rate that is different than a first bit rate of the first content transmission. The method can also comprise generating a third content transmission. The third content transmission can comprise the second content transmission.
    Type: Grant
    Filed: August 1, 2022
    Date of Patent: October 31, 2023
    Assignee: Comcast Cable Communications, LLC
    Inventors: Yasser F. Syed, Donald J. Wester
  • Patent number: 11800092
    Abstract: An method for encoding and decoding of motion vector difference for inter-predicting a video block is provided. The method includes receiving a coded video bitstream; extracting, from the coded video bitstream, a flag indicating whether an inter-predication mode is a JOINT_NEWMV mode for a current block in a current frame, the JOINT_NEWMV mode indicating that a first delta motion vector (MV) for a first reference frame from a reference list 0 and a second delta MV for a second reference frame from a reference list 1 are jointly signaled; in response to the flag indicating that the inter-predication mode is the JOINT_NEWMV mode, extracting a joint delta motion vector (MV) for the current block, and deriving the first delta MV and the second delta MV based on the joint delta MV; and decoding the current block based on the first delta MV and the second delta MV.
    Type: Grant
    Filed: March 22, 2022
    Date of Patent: October 24, 2023
    Assignee: TENCENT AMERICA LLC
    Inventors: Liang Zhao, Xin Zhao, Shan Liu
  • Patent number: 11800127
    Abstract: A method and apparatus for intra-prediction coding of video data are provided. The apparatus includes a decoder that is configured to decode, from a bitstream, a syntax element indicating an intra-prediction type of a current block of the video data, and an intra-predictor that is configured to generate a prediction block for the current block by selectively performing matrix based intra-prediction or regular intra-prediction based on the intra-prediction type of the current block indicated by the syntax element.
    Type: Grant
    Filed: January 5, 2023
    Date of Patent: October 24, 2023
    Assignees: Hyundai Motor Company, Kia Corporation, Ewha University-Industry Collaboration Foundation
    Inventors: Je Won Kang, Sang Hyo Park, Seung Wook Park, Wha Pyeong Lim
  • Patent number: 11792418
    Abstract: A method and apparatus for intra-prediction coding of video data are provided. The apparatus includes a decoder that is configured to decode, from a bitstream, a syntax element indicating an intra-prediction type of a current block of the video data, and an intra-predictor that is configured to generate a prediction block for the current block by selectively performing matrix based intra-prediction or regular intra-prediction based on the intra-prediction type of the current block indicated by the syntax element.
    Type: Grant
    Filed: January 5, 2023
    Date of Patent: October 17, 2023
    Assignees: Hyundai Motor Company, Kia Corporation, Ewha University-Industry Collaboration Foundation
    Inventors: Je Won Kang, Sang Hyo Park, Seung Wook Park, Wha Pyeong Lim
  • Patent number: 11792406
    Abstract: Symmetric motion vector difference coding is described. One example video processing method includes determining, for a conversion between a block of a current picture of video and a bitstream representation of the block, whether a symmetric motion vector difference (SMVD) mode is allowable for the block, wherein whether the SMVD mode is allowable depends on a derivation process of two target reference pictures of the current picture, which includes a first step for searching a forward target reference picture in the reference picture list 0 and searching a backward target reference picture in the reference picture list 1, and a second step for searching a backward target reference picture in the reference picture list 0 and searching a forward target reference picture in the reference picture list 1, outputs of the first step and the second step being independent of each other; and performing the conversion based on the determination.
    Type: Grant
    Filed: April 26, 2022
    Date of Patent: October 17, 2023
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD, BYTEDANCE INC.
    Inventors: Hongbin Liu, Li Zhang, Kai Zhang, Zhipin Deng, Yue Wang
  • Patent number: 11792394
    Abstract: According to a method for Adaptive Loop Filter (ALF) processing of reconstructed video, multiple indicators are signaled in slice at an encoder side or parsed at a decoder side, where the multiple indicators are Adaptive Parameter Set (APS) indices associated with temporal ALF filter sets for the ALF processing. A current indicator is determined from the multiple indicators, where the current indicator is used to select a current ALF filter set. Filtered-reconstructed pixels are derived for the current block by applying the current ALF filter to the current block. In another method, if the ALF processing applied at a target sample requires an outside sample on other side of a target virtual boundary from the target sample, the outside sample is replaced by a padded sample.
    Type: Grant
    Filed: December 22, 2022
    Date of Patent: October 17, 2023
    Assignee: HFI INNOVATION INC.
    Inventors: Ching-Yeh Chen, Tzu-Der Chuang, Yu-Wen Huang
  • Patent number: 11778230
    Abstract: A method, performed by a digital device, for processing an image service according to the present document comprises the steps of: receiving image information; decoding a first image on the basis of the image information; processing the decoded first image to be displayed on a first area of a display screen; and processing a second image to be displayed on a second area of the display screen.
    Type: Grant
    Filed: October 28, 2022
    Date of Patent: October 3, 2023
    Assignee: LG ELECTRONICS INC.
    Inventors: Ling Li, Jin Heo, Seunghwan Kim
  • Patent number: 11778159
    Abstract: A motion sensory and imaging device capable of acquiring imaging information of the scene and providing at least a near real time pass-through of imaging information to a user. The sensory and imaging device can be used stand-alone or coupled to a wearable or portable device to create a wearable sensory system capable of presenting to the wearer the imaging information augmented with virtualized or created presentations of information.
    Type: Grant
    Filed: October 24, 2022
    Date of Patent: October 3, 2023
    Assignee: Ultrahaptics IP Two Limited
    Inventors: David S. Holz, Neeloy Roy, Hongyuan He
  • Patent number: 11770529
    Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus may include obtaining a current block by splitting an image, determining a prediction mode of the current block, generating an intra prediction block of the current block, based on the prediction mode of the current block being an intra prediction mode, generating a residual block of the current block, and reconstructing the current block based on the prediction block and the residual block of the current block.
    Type: Grant
    Filed: November 21, 2022
    Date of Patent: September 26, 2023
    Assignee: LG Electronics Inc.
    Inventors: Ling Li, Jung Hak Nam
  • Patent number: 11770542
    Abstract: A method for colour component prediction, applied to an encoder and includes: determining a neighbouring reference sample set of a current block, wherein the neighbouring reference sample set comprises at least one reference sample; determining a preset parameter value corresponding to the current block, including: determining a bitdepth value corresponding to a to-be-predicted colour component of the current block; and performing a shift on 1 by the bitdepth value minus 1 to obtain the preset parameter value. The method further includes: determining an input sample matrix by means of a first preset calculation model based on the neighbouring reference sample set and the preset parameter value; and performing colour component prediction on the current block according to the input sample matrix to obtain a prediction block of the current block.
    Type: Grant
    Filed: September 12, 2022
    Date of Patent: September 26, 2023
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventors: Shuai Wan, Yanzhuo Ma, Junyan Huo, Haixin Wang, Fuzheng Yang
  • Patent number: 11758183
    Abstract: Devices, systems and methods for digital video coding, which includes matrix-based intra prediction methods for video coding, are described. In a representative aspect, a method for video processing includes performing a first determination whether a luma video block of a video is coded using a matrix based intra prediction (MIP) mode; performing a second determination that the luma video block is applicable for determining a chroma intra mode for a current chroma video block of the video; performing, based on the first determination and the second determination, a third determination about the chroma intra mode to be used for the current chroma video block; and performing, based on the third determination, a conversion between the current chroma video block and a bitstream representation of the current chroma video block.
    Type: Grant
    Filed: November 1, 2021
    Date of Patent: September 12, 2023
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD, BYTEDANCE INC.
    Inventors: Zhipin Deng, Kai Zhang, Li Zhang, Hongbin Liu, Jizheng Xu
  • Patent number: 11758186
    Abstract: A method, system, and non-transitory computer readable medium is provided for decoding video data. Video data comprising a chroma component having a first nominal angle and first delta angles and a luma component having a second nominal angle and second delta angles is received, wherein the first delta angles are dependent on the second delta angles. The first delta angle values corresponding to the first delta angles are parsed or derived based at least on second delta values corresponding to the second delta angles, wherein the first delta angle values are derived from one or more nominal angles associated with one or more sample positions corresponding to one or more luma blocks. A prediction mode associated with the chroma component based on a nominal mode of a corresponding luma block is entropy-coded. The video data is decoded based on the first delta angle values corresponding to the first delta angles.
    Type: Grant
    Filed: July 26, 2022
    Date of Patent: September 12, 2023
    Assignee: TENCENT AMERICA LLC
    Inventors: Liang Zhao, Xin Zhao, Shan Liu
  • Patent number: 11743451
    Abstract: An intra prediction method by using cross component liner prediction mode (CCLM), includes: determining a luma block corresponding to a current chroma block; obtaining luma reference samples of the luma block based on determining L available chroma reference samples of the current chroma block, wherein the obtained luma reference samples of the luma block are down-sampled luma reference samples; calculating linear model coefficients based on the luma reference samples and chroma reference samples that correspond to the luma reference samples; and obtaining a prediction for the current chroma block based on the linear model coefficients and values of a down-sampled luma block of the luma block.
    Type: Grant
    Filed: April 5, 2021
    Date of Patent: August 29, 2023
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Xiang Ma, Jianle Chen, Yin Zhao, Haitao Yang