Vid Scale, Inc.

Alibaba Group Holding Limited

Qualcomm Incorporated

Interdigital Madison Patent Holdings, Sas

Interdigital Vc Holdings, Inc.

Dolby Laboratories Licensing Corporation

Alibaba (china) Co., Ltd.

Alibaba Innovation Private Limited

Interdigital Patent Holdings, Inc.

Velos Media, LLC

Guangdong Oppo Mobile Telecommunications Corp., Ltd.

Alibaba Damo (hangzhou) Technology Co., Ltd.

Alibaba Singapore Holding Private Limited

Alibaba Group Holding Limtted

Atibaba Group Holding Limited

Yan Ye

Yuwen He

Xiaoyu Xiu

Jiancong Luo

Ru-Ling Liao

Jie Chen

Yong He

Marta Karczewicz

Jie Dong

Mohammed Golam Sarwer

Peisong Chen

Zhao Wang

Ralph Neff

Ahmed Hamza

Philippe Hanhart

Xinwei Li

George W McClellan

Alexandros Michael Tourapis

Yiliang L Bao

Eduardo Asbun

Eun Seok Ryu

Srinivas Gudumasu

Ali C Begen

Chia-Ming Tsai

Yan Zhang

Peng Yin

Louis Joseph Kerofsky

Giovanni Motta

Qian Chen

Rahul Vanam

Can Bal

Markus Kunstner

Guan-Ming Su

Walter Christian Gish

Sheng Qu

Chia-Yuan Teng

Ming-Chang Tsai

Rahul P Panchal

Chun-Chi Chen

Shurun Wang

Ariela Zeira

Yuriy Reznik

Samir N Hulyalkar

Sharath Manjunath

Shiqi Wang

Yufei Yuan

Zhifeng Chen

Xuan Huang

Saurav Bandyopadhyay

Eun Ryu

Wei-Jung Chien

Eldad M Zeira

Liangping Ma

Anantharaman Balasubramanian

Athanasios Leontaris

Gregory S Sternberg

Hang Liu

Peshala Vishvajith Pahalawatta

Arash Vosoughi

Gokce Dane

Byung Kwan Yi

Yen-Chi Lee

Narendranath Malayath

Hyukjune Chung

Fanyi Duanmu

Jianhua Chen

Thorsten Laude

Yin Peng

Karl Ni

Shengyang Xu

Ru-ling Liao

Changyue Ma

Enming Luo

Ruling Liao

Nien-Chung Feng

Yamei Chen

Miaohui Wang

Jiun-Yu Kao

Maryam Azimi Hashemi

Mohammad Golam Sarwer

George W Mcclellan

Chen Peisong

He Yong

Alexandros Tourapis

Samir Hulyalkar

Walter Gish

A coding device (e.g., that may be or may include encoder and/or decoder) may receive a frame-packed picture of 360-degree video. The coding device may identify a face in the frame-packed picture that the current block belongs to. The coding device may determine that a current block is located at a boundary of the face that the current block belongs to. The coding device may identify multiple spherical neighboring blocks of the current block. The coding device may identify a cross-face boundary neighboring block. The coding device may identify a block in the frame-packed picture that corresponds to the cross-face boundary neighboring block. The coding device may determine whether to use the identified block to code the current block based on availability of the identified block. The coding device may code the current block based on the determination to use the identified block.

360-degree video coding using face continuities

Methods for encoding a video sequence into a bitstream and decoding a bitstream to output one or more pictures for a video stream. An exemplary method includes: receiving a video sequence; encoding one or more pictures of the video sequence; and generating a bitstream associated with the encoded pictures, wherein the encoding comprises: predicting chroma samples within a current block based on luma samples corresponding to the chroma samples by a plurality of cross-component residual models (CCRMs).

Cross component prediction

A video processing method is provided. The method includes inserting a set of spatial merge candidates to a first merge candidate list of a coding block, wherein the first merge candidate list is constructed by: adding a top neighboring block Bto the first merge candidate list when the top neighboring block Bis available; adding a left neighboring block Ato the first merge candidate list when the left neighboring block Ais available; adding a top neighboring block Bto the first merge candidate list when the top neighboring block Bis available; adding a left neighboring block Ato the first merge candidate list when the left neighboring block Ais available; and adding an above-left neighboring block Bto the first merge candidate list when the above-left neighboring block Bis available.

Methods for constructing a merge candidate list

A VVC-standard encoder and a VVC-standard decoder are provided, implementing a residual sign prediction method utilizing a sorting order of residual coefficients and an expanded region of a TB. As sign prediction accuracy is higher for larger transform coefficient levels, a VVC-standard encoder and a VVC-standard decoder sort transform coefficient signs of a TB in a one-dimensional array, based on corresponding QIdx values instead of the residual coefficient level value. The first n signs according to corresponding QIdx values, ordered from largest to smallest, are predicted using a residual sign prediction method, and the rest of the signs are signaled by EP bins. A sign prediction area is also extended, without limitation to an upper-left 4×4 region within the transform block, but to a region up to 32×32 in size; a VVC-standard encoder signals the maximum dimensions of the region to a VVC-standard decoder in syntax structures of the block.

Residual sign prediction of transform coefficients in video coding

A method, an apparatus and non-transitory computer-readable storage medium for video data process are provided. The method includes receiving a bitstream comprising a coding unit coded in a geometric partition mode (GPM); decoding a first parameter associated with the coding unit, the first parameter indicating whether template matching being applied to the coding unit; and determining, according to the first parameter, motion information for the coding unit, wherein when the first parameter indicates the template matching is applied to the coding unit, the motion information is refined using the template matching.

Method, apparatus, and non-transitory computer-readable storage medium for motion vector refinement for geometric partition mode

The present disclosure provides pre-analysis based methods for adaptively compressing image data consumed by machine vision tasks. An exemplary method includes: receiving a video sequence; encoding one or more input pictures associated with the video sequence; and generating a bitstream, wherein the encoding includes: performing instance segmentation of an input picture, to generate one or more segment masks; combining the one or more segment masks to generate a merged mask; extracting, from the input picture, a region comprising the merged mask; and compressing image data representing the extracted region.

Pre-analysis based image compression methods

The present disclosure provides methods and apparatuses for signaling subpicture partitioning information. An exemplary method includes: determining, according to a subpicture information present flag signaled in a bitstream, whether the bitstream comprises subpicture information; and in response to the bitstream comprising the subpicture information, signaling in the bitstream at least one of: a number of subpictures in a picture, a width, a height, a position, and an identifier (ID) mapping of a target subpicture, a subpic_treated_as_pic_flag, and a loop_filter_across_subpic_enabled_flag.

Method and apparatus for signaling subpicture partitioning information

A time-domain filtering method is provided, including: determining a to-be-filtered image frame in a group of pictures; extracting a relative motion feature of the to-be-filtered image frame, where the relative motion feature represents relative motion complexity between image contents of the to-be-filtered image frame and image contents of the remaining image frames in the group of pictures; and determining a target filtering magnitude corresponding to the relative motion feature, and performing time-domain filtering on the to-be-filtered image frame by using the target filtering magnitude.

Time-domain filtering method and apparatus, electronic device, and computer-readable storage medium

A method for performing motion compensation includes: receiving a first wrap-around motion compensation flag associated with one or more pictures, and a second wrap-around motion compensation flag associated with a sequence of pictures; and determining whether the first wrap-around motion compensation flag is equal to a first value or a second value based on the second wrap-around motion compensation flag or a luma coding tree block size: when the second wrap-around motion compensation flag is equal to the second value, determining the first wrap-around motion compensation flag equal to the second value, or when the luma coding tree block size in unit of minimum coding block plus 1 is greater than a picture width in unit of minimum coding block minus 1, determining the first wrap-around motion compensation flag is equal to the second value.

Methods for performing wrap-around motion compensation

Video encoding and decoding techniques for bi-prediction with weighted averaging are disclosed. According to certain embodiments, a computer-implemented video signaling method includes signaling, by a processor to a video decoder, a bitstream including weight information used for prediction of a coding unit (CU). The weight information indicates: if weighted prediction is enabled for a bi-prediction mode of the CU, disabling weighted averaging for the bi-prediction mode.

On block level bi-prediction with weighted averaging

Embodiments of video coding systems and methods are described for reducing coding latency introduced by decoder-side motion vector refinement (DMVR). In one example, two non-refined motion vectors are identified for coding of a first block of samples (e.g. a first coding unit) using bi-prediction. One or both of the non-refined motion vectors are used to predict motion information for a second block of samples (e.g. a second coding unit). The two non-refined motion vectors are refined using DMVR, and the refined motion vectors are used to generate a prediction signal of the first block of samples. Such embodiments allow the second block of samples to be coded substantially in parallel with the first block without waiting for completion of DMVR on the first block. In additional embodiments, optical-flow-based techniques are described for motion vector refinement.

Methods and apparatus for reducing the coding latency of decoder-side motion refinement

The present disclosure provides methods and systems for motion compensation. The method can include: determining a plurality of intermediate interpolation coefficients of an interpolation filter, the determining of the plurality of intermediate interpolation coefficients being: based on positions of a plurality of integer samples respectively, and based on fractional reference positions of a plurality of fractional samples respectively; determining a plurality of integer interpolation coefficients of the interpolation filter by rounding the plurality of intermediate interpolation coefficients to a plurality of integers respectively; and applying the plurality of integer interpolation coefficients on a picture to perform motion compensation prediction.

Motion compensation methods for video coding

The present disclosure provides systems and methods for signaling a maximum transform size and a residual coding method. According to certain disclosed embodiments, the methods include: receiving a bitstream comprising a set of pictures, determining, according to the received bitstream, a value of a coded tree block size; and determining, based on the value of the coded tree block size, whether to signal a flag indicating a maximum transform size for luma samples.

Signaling of maximum transform size and residual coding method

Techniques are described for encoding and decoding digital video data using macroblocks that are larger than the macroblocks prescribed by conventional video encoding and decoding standards. For example, the techniques include encoding and decoding a video stream using macroblocks comprising greater than 16×16 pixels. In one example, an apparatus includes a video encoder configured to encode a coded unit comprising a plurality of video blocks, wherein at least one of the plurality of video blocks comprises a size of more than 16×16 pixels and to generate syntax information for the coded unit that includes a maximum size value, wherein the maximum size value indicates a size of a largest one of the plurality of video blocks in the coded unit. The syntax information may also include a minimum size value. In this manner, the encoder may indicate to a decoder the proper syntax decoder to apply to the coded unit.

Video coding with large macroblocks

Growing community of inventors

San Diego, CA, United States of America

Yan Ye