公开(公告)号：US11882275B2

公开(公告)日：2024-01-23

申请号：US17747309

申请日：2022-05-18

申请人： Intellectual Discovery Co., Ltd.

发明人： Dong Gyu Sim ,  Ho Chan Ryu ,  Yong Jo Ahn

IPC分类号： H04N19/11 ,  H04N19/176 ,  H04N19/107 ,  H04N19/124 ,  H04N19/91 ,  H04N19/593 ,  H04N19/105 ,  H04N19/117 ,  H04N19/615 ,  H04N19/13 ,  H04N19/635 ,  H04N19/513 ,  H04N19/82

CPC分类号： H04N19/11 ,  H04N19/105 ,  H04N19/107 ,  H04N19/117 ,  H04N19/124 ,  H04N19/13 ,  H04N19/176 ,  H04N19/513 ,  H04N19/593 ,  H04N19/615 ,  H04N19/635 ,  H04N19/82 ,  H04N19/91

摘要： A device for encoding/decoding the image according to the present invention includes an intra prediction module configured to: determine an intra prediction mode of a current block; determine a scanning order of multiple sub blocks in the current block on the basis of the determined intra prediction mode; and perform intra prediction of the current block on the basis of the determined scanning order.

公开(公告)号：US20240015331A1

公开(公告)日：2024-01-11

申请号：US17983876

申请日：2022-11-09

申请人： TENCENT AMERICA LLC

发明人： Madhu PERINGASSERY KRISHNAN ,  Liang ZHAO ,  Xin ZHAO ,  Jing YE ,  Shan LIU

IPC分类号： H04N19/70 ,  H04N19/13 ,  H04N19/139 ,  H04N19/186 ,  H04N19/30 ,  H04N19/157 ,  H04N19/176 ,  H04N19/52

CPC分类号： H04N19/70 ,  H04N19/13 ,  H04N19/139 ,  H04N19/186 ,  H04N19/30 ,  H04N19/157 ,  H04N19/176 ,  H04N19/52

摘要： 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.

公开(公告)号：US20240015286A1

公开(公告)日：2024-01-11

申请号：US18455171

申请日：2023-08-24

申请人： INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY

发明人： Joo Hee MOON ,  Dong Jae WON ,  Sung Won LIM

IPC分类号： H04N19/117 ,  H04N19/13 ,  H04N19/176 ,  H04N19/182 ,  H04N19/82

CPC分类号： H04N19/117 ,  H04N19/13 ,  H04N19/176 ,  H04N19/182 ,  H04N19/82

摘要： The present invention provides an image encoding method and an image decoding method. The image decoding method, according to the present invention, comprises the steps of: decoding information associated with a clipping range of a current block; and performing sample adaptive offset (SAO) filtering on the basis of the information associated with the clipping range, wherein the information associated with the clipping range may include information on the maximum and minimum values of a pixel value included in the current block.

公开(公告)号：US20230421792A1

公开(公告)日：2023-12-28

申请号：US18367431

申请日：2023-09-12

申请人： BEIJING DAJIA INTERNET INFORMATION TECHNOLOGY CO., LTD.

发明人： Yi-Wen CHEN ,  Xianglin WANG

IPC分类号： H04N19/46 ,  H04N19/13 ,  H04N19/159 ,  H04N19/176

CPC分类号： H04N19/46 ,  H04N19/13 ,  H04N19/159 ,  H04N19/176

摘要： The present disclosure relates to a method for video encoding including: signaling a regular merge flag for a coding unit (CU) that is coded as merge mode and merge related modes; when the regular merge flag is signaled as one, indicating that a regular merge mode or merge mode with motion vector differences (MMVD) is used by the CU, constructing a motion vector merge list for the CU and using regular merge index to indicate which candidate is used; and when the regular merge flag is signaled as zero, indicating the regular merge mode is not used by the CU, and further signaling mode flags to indicate associated merge related modes are used when a mode flag's constraints are met; and when the regular merge flag is signaled as one, determining whether a MMVD merge flag is signaled based on the value of a MMVD flag.

公开(公告)号：US20230421768A1

公开(公告)日：2023-12-28

申请号：US18329739

申请日：2023-06-06

申请人： Telefonaktiebolaget LM Ericsson (publ)

发明人： Jonatan SAMUELSSON ,  Rickard SJOBERG

IPC分类号： H04N19/13 ,  H04N19/70 ,  H04N19/174 ,  H04N19/46

CPC分类号： H04N19/13 ,  H04N19/70 ,  H04N19/174 ,  H04N19/46 ,  H04N19/172

摘要： A length indicator associated with an encoded representation of a slice is parsed. The length indicator is indicative of a length of an extension field present in a slice header of the encoded representation. A decoder can then determine to ignore, during decoding of the encoded representation, any value of the extension field in the slice header where these values are identified based on the length indicator. As a consequence, an extension field can be added to slice headers and still enable legacy decoders to correctly decode the encoded representations.

公开(公告)号：US11856199B2

公开(公告)日：2023-12-26

申请号：US17875478

申请日：2022-07-28

申请人： Texas Instruments Incorporated

发明人： Vivienne Sze ,  Madhukar Budagavi

IPC分类号： H04N19/13 ,  H04N19/91 ,  H04N19/60 ,  H04N19/70 ,  H04N19/174 ,  H04N19/176 ,  H04N19/184

CPC分类号： H04N19/13 ,  H04N19/60 ,  H04N19/70 ,  H04N19/91 ,  H04N19/174 ,  H04N19/176 ,  H04N19/184

摘要： A method for encoding a video sequence is provided that includes entropy encoding syntax elements representative of transform coefficients generated as the video sequence is processed, wherein entropy encoding syntax elements representative of a transform coefficient includes binarizing the syntax elements representative of the transform coefficient to generate a plurality of binary symbols (bins), coding a portion of the plurality of bins in context coding mode, and coding a remaining portion of the plurality of bins in bypass coding mode. The method further includes reducing the number of bins that are coded in context coding mode for each transform coefficient in a plurality of subsequent transform coefficients that are entropy encoded after a specified number of transform coefficients have been entropy encoded.

公开(公告)号：US20230412812A1

公开(公告)日：2023-12-21

申请号：US18143516

申请日：2023-05-04

申请人： Tencent America LLC

发明人： Samruddhi Yashwant KAHU ,  Madhu PERINGASSERY KRISHNAN ,  Xin ZHAO ,  Shan LIU

IPC分类号： H04N19/13 ,  H04N19/91 ,  H04N19/18 ,  H04N19/176

CPC分类号： H04N19/13 ,  H04N19/91 ,  H04N19/18 ,  H04N19/176

摘要： The various embodiments described herein include methods and systems for encoding and decoding video. In one aspect, a method includes obtaining video data that includes a first block. The method further includes determining a plurality of transform coefficients associated with the first block. The method also includes predicting respective coefficient signs for the plurality of transform coefficients. The method also includes entropy coding the first block including jointly signaling two or more of the predicted coefficient signs.

公开(公告)号：US20230412804A1

公开(公告)日：2023-12-21

申请号：US18460622

申请日：2023-09-04

申请人： Industrial Technology Research Institute

发明人： Yao-Jen Chang ,  Chun-Lung Lin ,  Ching-Chieh Lin ,  Jih-Sheng Tu ,  Chao-Hsiung Hung

IPC分类号： H04N19/119 ,  H04N19/176 ,  H04N19/70 ,  H04N19/13 ,  H04N19/593 ,  H04N19/103 ,  H04N19/463 ,  H04N19/91 ,  H04N19/186 ,  H04N19/182

CPC分类号： H04N19/119 ,  H04N19/176 ,  H04N19/70 ,  H04N19/13 ,  H04N19/593 ,  H04N19/124 ,  H04N19/463 ,  H04N19/91 ,  H04N19/186 ,  H04N19/182 ,  H04N19/103

摘要： An encoding, a decoding method, a system for encoding and decoding, an encoder, and a decoder are provided. The encoding method includes the following. In a palette mode, if colors of pixels of a coding unit block are all represented by one or more major colors of the coding unit block, a flag is set as a first state value, and if the color of at least one pixel of the coding unit block is not represented by the one or more major colors of the coding unit block, the flag is set as a second state value. The encoding method further includes establishing a palette table corresponding to the coding unit block according to a state value of the flag and the one or more major colors.

公开(公告)号：US11849145B2

公开(公告)日：2023-12-19

申请号：US17471734

申请日：2021-09-10

申请人： NIPPON HOSO KYOKAI

发明人： Shunsuke Iwamura ,  Atsuro Ichigaya ,  Shimpei Nemoto

IPC分类号： H04N19/593 ,  H04N19/105 ,  H04N19/61 ,  H04N19/11 ,  H04N19/119 ,  H04N19/13 ,  H04N19/176

CPC分类号： H04N19/593 ,  H04N19/105 ,  H04N19/11 ,  H04N19/119 ,  H04N19/13 ,  H04N19/176 ,  H04N19/61

摘要： An image encoding device 1 that encodes an encoding target block obtained by dividing an image, the image encoding device including: an intra predictor 172 configured to predict the encoding target block through intra prediction to generate a prediction block; and a transformer 121 configured to perform orthogonal transform processing on a prediction residual representing an error of the prediction block with respect to the encoding target block. The intra predictor includes: a weighted controller 172c configured to control the weighted combining processing dependent on positions of prediction pixels within the prediction block based on a type of transform to be applied in the orthogonal transform processing in the transformer; and a corrector 172b configured to correct the prediction pixels by performing the weighted combining processing on reference pixels adjacent to the encoding target block and the prediction pixels.

公开(公告)号：US20230388507A1

公开(公告)日：2023-11-30

申请号：US18248063

申请日：2021-10-14

申请人： KAKADU R & D PTY LTD

发明人： David Scott Taubman

IPC分类号： H04N19/13

CPC分类号： H04N19/13

摘要： Provides is a method of image compression and decompression involving a variable-to-variable coding scheme, for example as used or of similar nature to a HT Cleanup encoding algorithm, as described in ISO/IEC 15444-15:2019. The method involves a lookup table that the encoder addresses using a potentially modified version of the EMB pattern, a potentially modified version of the significance pattern, and any additional context information, in order to find the associated variable length codeword. The modified significance pattern and modified EMB pattern, each consisting of 1 bit per sample in a quad, implicitly identify the quads original significance pattern and the quads 1-bit unsigned residual offset value, together with some or all of the quads original EMB pattern, both when the unsigned residual offset value is 1 and, for specific values of the significance pattern, when the unsigned residual offset value is 0.