Huawei Technologies Co., Limited

Future Wei Technologies, Inc.

Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V.

Huawei Device Co., Ltd.

Shan Gao

Shan Liu

Lei Zhang

Haitao Yang

Huanbang Chen

Lina Sun

Qingpeng Xie

Jiantong Zhou

Yin Zhao

Sixin Lin

Jiali Fu

Fuzheng Yang

Zhao Wang

Jing Jing Xiao

Siwei Ma

Bing Chen

Jianle Chen

Roman Igorevich Chernyak

Sriram Sethuraman

Xiang Ma

Jun Yao

Tongbo Wang

Shanfu Li

Jeeva Raj A

Victor Alexeevich Stepin

Sagar Kotecha

Weiwei Xu

Wenfeng Yao

Christian Riechert

Ingo Feldmann

Jay Nitin Shingala

Zhaolei Xiao

Yuntan Fang

Mengqi Ji

Yadong Lu

Haiyan Yang

Junjun Zhu

Xiaomu Lu

Ziqiang Xu

Marcus Müller

Zhenhua Wu

Yifan Fu

Jose Alvarez

The present invention relates to the field of video image processing, and provides a filtering method and an apparatus, to resolve a problem that subjective quality and objective quality of an image deteriorate because filtering processing cannot be performed on internal blocks of a non-translational motion prediction unit.

Filtering method for removing blocking artifact and apparatus

A video data inter prediction method is provided, which includes: determining a candidate motion information list of a current picture block, where the candidate motion information list includes at least one first candidate motion information group, at least one second candidate motion information group, the first candidate motion information group is a motion information group determined based on motion information of preset locations on a first neighboring picture block of the current picture block and a motion model of the first neighboring picture block, the second candidate motion information group is a set of motion information of at least two sample locations that are respectively neighboring to at least two preset locations on the current picture block; determining target motion information from the candidate motion information list; and performing inter prediction on the current picture block based on the target motion information.

Video data inter prediction based on control points

A picture prediction method is provided, which includes: obtaining initial motion information of a current picture block; determining, based on a matching cost criterion, that positions of a pair of reference blocks are a position of a target forward reference block of the current picture block and a position of a target backward reference block of the current picture block, where positions of each pair of reference blocks include a position of a forward reference block and a position of a backward reference block; and for the positions of each pair of reference blocks, a first position offset and a second position offset are in a mirror relationship; and obtaining a predicted value of a pixel value of the current picture block based on a pixel value of the target forward reference block and a pixel value of the target backward reference block.

Picture prediction method and apparatus, and codec

This application provides a pixel collection circuit comprising an optical-to-electrical converter circuit configured to convert a collected optical signal into an analog signal; an analog-to-digital converter circuit configured to: receive the analog signal from the optical-to-electrical converter circuit; and perform analog-to-digital conversion on the analog signal to obtain a digital signal; a differential circuit configured to: receive the digital signal from the analog-to-digital converter circuit; and obtain a difference signal between a digital signal of a previous triggering moment and the digital signal of a current triggering moment; the previous triggering moment and the current triggering moment are determined by at least a digital clock signal; a comparison circuit configured to receive the difference signal from the differential circuit, and output a pulse signal. A digital component is used to implement the pixel collection circuit in the dynamic vision sensor, so as to reduce noise, reduce interference, and facilitate debugging.

Pixel collection circuit, dynamic vision sensor, and image capture device

Video data inter prediction method and apparatus

This application provides a dynamic vision sensor. The sensor converts an optical signal into an electrical signal by using a photoelectric conversion unit, to generate a photovoltage; performs second-order difference on the photovoltage by using a second-order differential circuit; and generates a second-order event signal based on a result of second-order difference. A camera including the sensor can generate an image based on the second-order event signal, where the image represents a change of a light change speed.

Dynamic vision sensor

A method includes obtaining a first motion vector of a motion compensation unit included in an affine code block. The method also includes determining a second motion vector based on the first motion vector, where a precision of the second motion vector matches a motion vector precision of a storage unit corresponding to the motion compensation unit. The method further includes determining a third motion vector based on the second motion vector, where there is a preset correspondence between the third motion vector and the second motion vector, and the third motion vector is used for subsequent encoding/decoding processing.

Method and apparatus for determining motion vector of affine code block

An inter prediction method includes parsing, by a processor, a bitstream to obtain a location of a target adjacent image block of a current image block. The method further includes obtaining a preset correspondence between an adjacent image block location and a motion vector precision, wherein in the preset correspondence, locations of at least two adjacent image blocks correspond to different motion vector precisions. The method further includes determining, based on the location of the target adjacent image block and the preset correspondence, a target motion vector precision corresponding to the target adjacent image block. The method further includes determining a motion vector predictor of the current image block based on the location of the target adjacent image block and the target motion vector precision.

Inter prediction method and apparatus, and terminal device

A decoding method includes: parsing a data stream, and if partitioning an image block with a size of 2N&#xd7;2N using a quadtree partition pattern is allowed, processing a 2N&#xd7;N first subimage block and a 2N&#xd7;N second subimage block or an N&#xd7;2N first subimage block and an N&#xd7;2N second subimage block in a constraint subimage processing mode, wherein an image block partition pattern obtained for the partitioned second subimage block and the partitioned first subimage block is different from an image block partition pattern obtained after the 2N&#xd7;2N image block is partitioned using the quadtree partition pattern, where the 2N&#xd7;N first subimage block and the 2N&#xd7;N second subimage block or the N&#xd7;2N first subimage block and the N&#xd7;2N second subimage block are obtained by partitioning the image block with the size of 2N&#xd7;2N.

Encoding method and apparatus and decoding method and apparatus

An image prediction method and apparatus includes obtaining predicted motion information of an image block; determining an initial predicted block of the image block according to the predicted motion information and a reference image of the image block; performing, according to the predicted motion information, L iterative searches in the reference image using an integer pixel step size to obtain an intermediate predicted block of the image block; performing a single search in the reference image using a fractional pixel step size to obtain M predicted blocks of the image block; determining a target predicted block of the image block according to the M predicted blocks and the intermediate predicted block; and obtaining a predicted value of a pixel value of the image block according to a pixel value of the target predicted block.

Image prediction method and apparatus

A video coding mechanism is disclosed. The mechanism includes selecting a split mechanism to split a coding unit (CU) into sub-CUs for application of one or more transform units (TUs), the selection of the split mechanism based on comparing a CU width to a max TU width and comparing a CU height to a max TU height. The selected split mechanism is applied to the CU to obtain sub-CUs. A residual of one of the sub-CUs is determined. The residual includes a difference between sample values for the sub-CU and prediction samples for the sub-CU. The TUs are applied to transform the residual of the CU based on results of the selected split mechanism. A transformed residual for the CU is encoded into a bitstream.

Block partitioning in video coding

An encoding and decoding method, where the decoding method includes obtaining first information of a coding tree unit (CTU) in a to-be-decoded picture from a bitstream, where the first information indicates an allowed value range of a width-to-height ratio of a coding unit (CU) obtained by dividing the CTU, obtaining division information of the CTU from the bitstream, dividing the CTU into one or more CUs based on the first information and the division information, where a width-to-height ratio of the one or more CUs falls within the value range indicated by the first information, and the plurality of CUs do not overlap each other, and decoding the one or more CUs to obtain a reconstructed pixel of the one or more CUs.

Encoding method and apparatus, and decoding method and apparatus

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Shenzhen, China

Shan Gao