Tencent America LLC

Qualcomm Incorporated

Hefei Reliance Memory Limited

Lightwave Microsystems Corporation

Other

Neophotonics Corporation

Samsung Electronics Co., Ltd.

Lightwave Microsytstems Corporation

Liang Zhao

Shan Liu

Xin Zhao

Xiang Yang Li

Han Gao

Xiang Li

Jing Ye

Yixin Du

Zhichao Lu

Madhu Peringassery Krishnan

Jordan C Cookman

Cheng-Han Wang

Angelica Wong

Guichun Li

Hong Sun Kim

Xiaozhong Xu

Cheung Auyeung

Jie Wu

Le Nguyen Luong

Michael Kohlmann

Jin-Su Ko

Parvathanathan Subrahmanya

Leena Zacharias

Rayman Wai Pon

Fan Zhong

Krishnaranjan Rao

Pranav Iyengar

Daniel Carolin

Arnaud Meylan

Reza Shahidi

Amir Aminzadeh Gohari

Cormac S Conroy

Amit Mahajan

Chun-Hao Hsu

Roger Brockenbrough

Nitin Pant

Hao Xu

Vieri Vanghi

Kenneth McGreer

I-Hsiang Lin

Dinesh Kumar Devineni

Jeffrey Wong

Chang Shik Row

Jane Lam

Zhigang Han

Yushin Cho

Stephan Wenger

Leonid Sheynblat

Douglas Neal Rowitch

Xiaoxin Zhang

Daniel Fred Filipovic

Arnold Jason Gum

Dinesh Jagannath Alladi

Prasad Srinivasa Siva Gudem

Yi Zeng

Kentaro Yamamoto

David Loweth Winslow

Farnaz Parhami

Jongik Won

Balasubramanian Sivakumar

Paul A Conflitti

Sean Baker

Zhijie Xiong

Shishir Gupta

Calvin Ka Kuen Ho

Byeongdoo Choi

Aziz Gholmieh

Ling Li

Brian Clarke Banister

Dominic Gerard Farmer

Bhushan Shanti Asuri

Aristotele Hadjichristos

Roland Reinhard Rick

Shrenik Patel

Tevfik Yucek

Francis M Ngai

Feng Lu

Prashant Udupa Sripathi

Prashanth Akula

Subramanya P Rao

Kevin Hsi Huai Wang

Ming Yan

Koorosh Akhavan

Carl Hardin

Anup Savla

Arun Somani

Thomas S Tarter

Siva Penke

Anil Sahai

Emanuele Lopelli

Chan Hong Park

Calvin Ho

Wilson Long

Shriram Gurumoorthy

Rishabh Raj

Ravindra Chauhan

Brian P McGinnis

Biao Wang

David James Quirke

Madhu Peringassery Krishna

A method for applying adaptive weightings on intra prediction and inter prediction parts in compound inter-intra prediction modes includes defining a template area of neighboring reconstruction or prediction samples, applying one or more adaptive weighting candidates to the template area to generate one or more prediction samples using compound inter-intra prediction, calculating a cost value for each of the one or more adaptive weighting candidates, selecting the adaptive weighting candidate that provides the lowest cost as the weighting used for decoding a block with compound inter-intra prediction mode, and decoding the block based on the selected adaptive weighting.

Compound inter-intra prediction modes

Circuitry for adjusting luminance of a display device is provided. The circuitry includes a non-volatile memory array having a plurality memory cells configured to store luminance data of the display device, and a luminance adjusting circuit configured to receive image data to be displayed on the display device. The luminance adjusting circuit is coupled directly to the non-volatile memory array to receive the luminance data of the display device from the non-volatile memory array and adjust the image data based on the luminance data of the display device.

Display driver system with embedded non-volatile memory

This disclosure relates encoding and decoding of motion vector difference in for inter-predicting a video block. An example is disclosed for decoding an inter-predicted video block of a video stream. The method includes receiving a coded video bitstream; extracting, from the coded video bitstream, an inter-predication mode and a joint delta motion vector (MV) for a current block in a current frame; extracting, from the coded video bitstream, a flag indicating whether a first delta MV for a first reference frame and a second delta MV for a second reference frame are jointly signaled; in response to the flag indicating that the first delta MV and the second delta MV are jointly signaled, deriving the first delta MV and the second delta MV based on the joint delta MV; and decoding the current block in the current frame based on the first delta MV and the second delta MV.

Joint motion vector difference coding

Systems and methods for encoding and decoding using syntax design for multi-symbol arithmetic coding are provided. A method includes receiving a coded video bitstream including a plurality of syntax elements; determining a first maximum alphabet size for arithmetic coding by an arithmetic coding engine, the first maximum alphabet size determined based on a hardware constraint; determining a second maximum alphabet size that is less than the first maximum alphabet size; and decoding the plurality of syntax elements included in the coded video bitstream, based on the determined second maximum alphabet size, wherein each of the plurality of syntax elements is entropy coded with an alphabet size less than or equal to the determined second maximum alphabet size.

Systems and methods including syntax design for multi-symbol arithmetic coding

In a method for video decoding in a decoder, transform coefficients associated with a coding block that is an L-shaped partition of a picture are decoded, by a processor and from a coded video bitstream. The L-shaped partition of the picture is partitioned into a plurality of rectangular sub-blocks when the coding block is the L-shaped partition, each corner of the L-shaped partition being a right angle. Residuals of each of the plurality of rectangular sub-blocks in the coding block are determined, by the processor, based on the transform coefficients of the respective rectangular sub-block. Samples of the coding block are reconstructed, by the processor, based on the residuals of the coding block.

Transform for L-shaped partition

Aspects of the disclosure provide methods and apparatuses for video encoding/decoding. In some examples, an apparatus for video decoding includes processing circuitry. For example, the processing circuitry decodes prediction information of a current block from a coded video bitstream. The prediction information indicates that a prediction of the current block is at least partially based on an inter prediction. Then, the processing circuitry reconstructs at least a sample of the current block as a combination of a result from the inter prediction and neighboring samples of the block that are selected based on a position of the sample.

Method and apparatus for video coding

The various implementations described herein include methods and systems for coding video. In one aspect, a method includes receiving video data including a picture, wherein the picture is coded using at least a first color component and a second color component, and the picture includes a first block that is coded in a geometric partition mode, the first block including a first geometric partition and a second geometric partition; reconstructing samples in a first geometric partition of the first color component of the first block; deriving samples in the first geometric partition of the second color component of the first block based on the reconstructed samples of the first color component of the first block; and decoding the first block in the picture based at least on the reconstructed samples in the first geometric partition of the first color component and the second color component of the first block.

Systems and methods for cross-component geometric/wedgelet partition derivation

An example method of video coding includes receiving a video bitstream including a plurality of coding blocks; identifying, based on a first indicator in the video bitstream, a coding region that comprises two or more blocks of the plurality of coding blocks, where at least one block in the coding region is encoded in an intra prediction mode and at least one block in the coding region is encoded in a non-intra prediction mode. For a last block in the coding region, when all preceding blocks in the coding region are encoded in the intra prediction mode, the method includes inferring a prediction mode of the last block as being an inter prediction mode without receiving an inter prediction mode indicator for the last block; and reconstructing the last block using the inferred prediction mode.

Systems and methods for implicit derivation in a recursive intra region

Various implementations described herein include methods and systems for coding video. In one aspect, a video bitstream includes a high level syntax element for a frame level cross-component sample offset (CCSO) flag indicating whether to apply CCSO filtering on a current image frame. When the frame level CCSO flag indicates that CCSO filtering is applied the current image frame, an electronic device identifies, in the video bitstream, a first syntax element for a first component CCSO flag indicating whether to apply CCSO filtering on a first color component of the current image frame, and determines whether to apply CCSO filtering on a first color sample of the first color component based on the first syntax element. The current image frame including the first color sample of the first color component is reconstructed.

CCSO with high level flags

The various implementations described herein include methods and systems for coding video. In one aspect, a method of video decoding includes receiving video data that includes a first block and a plurality of residual coefficients, from a video bitstream. The first block is encoded in an intra prediction mode, and the plurality of residual coefficients are generated by applying a short distance intra prediction to a residue block for the first block. The residue block generated from applying the intra prediction mode to the first block. The method includes generating, from the plurality of residual coefficients, a refined residue block for the first block, and generating a reconstructed residue block for the first block, where the reconstructed residue block is generated using an intra prediction block and the refined residue block. The method also includes reconstructing the first block using the refined residue block.

Short distance predictions for residual blocks

Coded information of a current block and neighboring blocks of the current block is received, where the current block is predicted in an intra directional mode. The intra directional mode of the current block is determined to be associated with an angle that is one of smaller than 90 degrees and larger than 180 degrees. In response to the intra directional mode of the current block being associated with the angle, whether a delta angle associated with the current block is a pre-defined delta angle is determined. In response to the delta angle associated with the current block not being the pre-defined delta angle, a single direction intra prediction and not a bi-direction intra prediction is applied to the current block. A sample of the current block is reconstructed based on an adjacent reference sample on a reference line that is determined according to the single direction intra prediction.

Angular intra prediction

Aspects of the disclosure provide methods and apparatuses for video encoding/decoding. In some examples, an apparatus for video decoding includes receiving circuitry and processing circuitry. The processing circuitry receives a bitstream carrying a plurality of pictures, and determines at least a motion compensation padding (MCP) block that is located in an MCP area outside of a picture and next to a picture boundary of the picture. The processing circuitry derives, according to a plurality of candidates with positions located at the picture boundary within the picture, a motion vector of the MCP block for motion compensated boundary padding, and reconstructs at least a sample in the MCP block according to the derived motion vector for the motion compensated boundary padding.

On motion compensated picture boundary padding

The various implementations described herein include methods and systems for coding video. The methods include receiving a motion vector difference (MVD) of a video block from the video stream; in response to a determination that an adaptive MVD resolution mode of an inter prediction mode is signaled, searching for a first template of a prediction video block for the video block, and the first/second template is the neighboring reconstructed/predicted samples of the prediction video block/current block, and the prediction video block is a reconstructed/predicted forward or backward video block of the video block; locating the first template of the prediction video block that is a best match for a second template of the video block; refining a motion vector (MV) of the video block based on at least the second template, the located first template, and the MVD; and reconstructing/processing the video block based on at least the refined MV.

Systems and methods for template matching for adaptive MVD resolution

Various implementations described herein include methods and systems for coding video. In one aspect, a video bitstream includes a current image frame and a first syntax element. An electronic device determines that the first syntax element has a first predefined value indicating that the cross-component sample offset (CCSO) mode is enabled, and generates a set of adapted luma samples including an adapted first luma sample and its adapted neighboring luma samples based on a set of reconstructed luma samples. The reconstructed luma samples include a first luma sample that is collocated with a first color sample. The electronic device determines the first sample offset of the first color sample based on the adapted first luma sample and the one or more adapted neighboring luma samples. The current image frame is reconstructed at least by adjusting the first color sample based on the first sample offset.

CCSO with downsampling filters and sample position selection

Methods and systems for determining contexts for coding and decoding various syntax elements of a video stream in inter prediction modes are described. The methods and systems enable a limitation on numbers of possible coding contexts for syntax elements related to the inter prediction mode, and a selection of coding contexts for a current block based on coding information of spatially neighboring blocks and temporal motion prediction information.

Context design for coding and decoding syntax elements in inter prediction modes

Growing community of inventors

Sunnyvale, CA, United States of America

Liang Zhao