公开(公告)号：WO2019160724A1

公开(公告)日：2019-08-22

申请号：PCT/US2019/016897

申请日：2019-02-06

Applicant: QUALCOMM INCORPORATED

Inventor： GARLAPATI, Shravan Kumar Reddy ,  HAFTBARADARAN, Afshin ,  RISSO, Alessandro ,  PIERROT, Alexandre ,  VAZE, Chinmay ,  SANKAR, Hari ,  ZHANG, Li

IPC: H04L1/18

Abstract: Certain aspects of the present disclosure generally relate to techniques for combining a plurality of decision metrics of a scrambled payload in a 5G wireless communications system. For example, in some cases, combining decision metrics of a scrambled payload may generally involve receiving a first payload at a receiver that was scrambled both before and after encoding, generating a second payload at the receiver with selectively set payload mask bits, and using the selectively-set payload mask bits in the second payload to descramble the first payload.

公开(公告)号：WO2019157189A1

公开(公告)日：2019-08-15

申请号：PCT/US2019/017062

申请日：2019-02-07

Applicant: QUALCOMM INCORPORATED

Inventor： ZHANG, Kai ,  ZHANG, Li ,  CHIEN, Wei-Jung ,  KARCZEWICZ, Marta

IPC: H04N19/119 ,  H04N19/186 ,  H04N19/157

CPC classification number: H04N19/186 ,  H04N19/117 ,  H04N19/119 ,  H04N19/157 ,  H04N19/176 ,  H04N19/70 ,  H04N19/91

Abstract: A method of decoding video data including receiving a block of video data, determining to decode the block of video data using palette coding based on whether color components of the block of video data were partitioned according to a decoupled tree partition, and decoding the block of video data based on the determination.

公开(公告)号：WO2019147813A1

公开(公告)日：2019-08-01

申请号：PCT/US2019/014956

申请日：2019-01-24

Applicant: QUALCOMM INCORPORATED

Inventor： ZHANG, Li ,  CHIEN, Wei-Jung ,  ZHANG, Kai ,  KARCZEWICZ, Marta

IPC: H04N19/117 ,  H04N19/82 ,  H04N19/174 ,  H04N19/583 ,  H04N19/176 ,  H04N19/157 ,  H04N19/182

CPC classification number: H04N19/117 ,  H04N19/109 ,  H04N19/124 ,  H04N19/157 ,  H04N19/174 ,  H04N19/176 ,  H04N19/182 ,  H04N19/583 ,  H04N19/82 ,  H04N19/865

Abstract: Methods and systems related to adaptive loop filters (ALFs) are discussed. Prior ALF designs may consider only direction and activity information for classification of the ALF. As such, ALF coding performance may be degraded in some examples where a less accurate ALF classification is determined. Improvements include determining ALF classifications based on deblocking filter results.

公开(公告)号：WO2019144020A1

公开(公告)日：2019-07-25

申请号：PCT/US2019/014316

申请日：2019-01-18

Applicant: QUALCOMM INCORPORATED

Inventor： GADDE, Akshay ,  ZHANG, Li ,  CHIEN, Wei-Jung ,  KARCZEWICZ, Marta

IPC: H04N19/86 ,  H04N19/117 ,  H04N19/14 ,  H04N19/176

CPC classification number: H04N19/117 ,  H04N19/14 ,  H04N19/176 ,  H04N19/196 ,  H04N19/61 ,  H04N19/86

Abstract: Codecs that use larger blocks may have larger boundary regions that may benefit from filtering. In some embodiments, the deblocking filter determines filters and/or a number of samples of the block to be filtered based on block dimensions. For example, In one embodiment, deblocking filter parameters for the video block are determined based on at least one dimension of the size of the video block. The filter parameters include a filter to be applied or a number of pixels along a boundary with a neighboring block to which the filter is to be applied determined based on the at least one dimension.

公开(公告)号：WO2019125787A1

公开(公告)日：2019-06-27

申请号：PCT/US2018/064469

申请日：2018-12-07

Applicant: QUALCOMM INCORPORATED

Inventor： EGILMEZ, Hilmi Enes ,  ZHANG, Li ,  SEREGIN, Vadim ,  SAID, Amir ,  KARCZEWICZ, Marta

IPC: H04N19/13 ,  H04N19/172 ,  H04N19/91 ,  H04N19/157 ,  H04N19/196

Abstract: A method of decoding video data includes receiving, by processing circuitry, a video bitstream including encoded representations of one or more syntax elements of a coded unit and initializing, by the processing circuitry, a respective probability state for each bin of a plurality of bins for the one or more syntax elements based on a comparison of a parameter associated with the coded unit and a respective threshold of a plurality of thresholds. The method further includes performing, by the processing circuitry, inverse binary arithmetic coding on the encoded representations of the one or more syntax elements to obtain each bin of the plurality of bins using a respective probability state for the bin, inverse binarizing, by the processing circuitry, the plurality of bins to obtain the one or more syntax elements, and decoding, by the processing circuitry, the video data based on the one or more syntax elements.

公开(公告)号：WO2019108550A1

公开(公告)日：2019-06-06

申请号：PCT/US2018/062643

申请日：2018-11-27

Applicant: QUALCOMM INCORPORATED

Inventor： ZHANG, Li ,  HSIEH, Cheng-Teh ,  CHIEN, Wei-Jung ,  KARCZEWICZ, Marta

IPC: H04N19/176 ,  H04N19/117

Abstract: A method of coding video data, the method comprising coding a block of video data to obtaining a coded block of video data, applying an adaptive loop filter defined by a filter support to samples of the coded block of video data, including using padded samples for portions of the filter support that are outside of the block, and outputting the coded block of video data after applying adaptive loop filtering to the coded block of video data.

公开(公告)号：WO2018208803A1

公开(公告)日：2018-11-15

申请号：PCT/US2018/031634

申请日：2018-05-08

Applicant: QUALCOMM INCORPORATED

Inventor： ZHANG, Li ,  HU, Nan ,  CHIEN, Wei-Jung ,  KARCZEWICZ, Marta

IPC: H04N19/13 ,  H04N19/159 ,  H04N19/176 ,  H04N19/70

Abstract: A device for coding video data is configured to determine a context for a first syntax element based on already coded information for a current block of video data, wherein a value for the first syntax element indicates whether there is at least one non-zero transform coefficient level associated with the current block of video data; and code the first syntax element based on the determined context.

公开(公告)号：WO2018119429A1

公开(公告)日：2018-06-28

申请号：PCT/US2017/068279

申请日：2017-12-22

Applicant: QUALCOMM INCORPORATED

Inventor： ZHANG, Li ,  CHIEN, Wei-Jung ,  KARCZEWICZ, Marta

IPC: H04N19/157 ,  H04N19/159 ,  H04N19/137 ,  H04N19/117 ,  H04N19/196 ,  H04N19/80 ,  H04N19/82 ,  H04N19/593 ,  H04N19/537 ,  H04N19/176 ,  H04N19/182

Abstract: A device for decoding video data determines mode information for a current block of a current picture of the video data; derives weights for use in a bilateral filter based on the mode information for the current block; applies the bilateral filter to a current sample of the current block by assign the weights to neighboring samples of the current sample of the current block and the current sample of the current block and modifying a sample value for the current sample based on sample values of the neighboring samples, the weights assigned to the neighboring samples, the sample value for the current sample, and the weight assigned to the current sample; and based on the modified sample value for the current sample, outputs a decoded version of the current picture.

公开(公告)号：WO2018119247A1

公开(公告)日：2018-06-28

申请号：PCT/US2017/067918

申请日：2017-12-21

Applicant: QUALCOMM INCORPORATED

Inventor： ZHAO, Xin ,  SEREGIN, Vadim ,  ZHANG, Li ,  KARCZEWICZ, Marta ,  SAID, Amir

IPC: H04N19/13 ,  H04N19/18 ,  H04N19/184

Abstract: Techniques for cost function measurement with respect to sign prediction-based video coding are generally described. An example device includes processing circuitry is configured to apply first and second sign combinations to transform coefficients of a stored block of video data to obtain first and second hypothesis reconstructions of the block, to measure first and second cost functions with respect to the first and second hypothesis reconstructions by determining respective sets of pixel value gradients representing differences between samples of each hypothesis reconstruction of the block and samples of a neighboring block positioned adjacent to the block. The processing circuitry is further configured to compare the respective cost functions, to select, based on the comparison, one of the hypothesis reconstructions of the block, and to code the block using the respective sign combination associated with the selected hypothesis reconstruction.

公开(公告)号：WO2018067722A1

公开(公告)日：2018-04-12

申请号：PCT/US2017/055173

申请日：2017-10-04

Applicant: QUALCOMM INCORPORATED

Inventor： KARCZEWICZ, Marta ,  ZHANG, Li ,  CHEN, Jianle ,  CHIEN, Wei-Jung ,  CHEN, Yi-Wen ,  ZHAO, Xin

IPC: H04N19/176 ,  H04N19/117 ,  H04N19/14 ,  H04N19/182 ,  H04N19/70 ,  H04N19/82

Abstract: A video coder compares a first sample of a current block to a first set of neighbor samples to determine a first difference value; determines a first offset for the first sample based on the first difference value; compares a second sample of the current block to a second set of neighbor samples to determine a second difference value that has a same sign as the first difference value; determines an offset for the second sample, that is different than the offset for the first sample, based on the second difference value; and applies the first offset to the first sample value and the second offset to the second sample value to generate a filtered image.

Abstract translation: 视频译码器将当前块的第一样本与第一组相邻样本进行比较以确定第一差值; 基于第一差值确定第一样本的第一偏移量; 将当前块的第二样本与第二组相邻样本进行比较以确定与第一差值具有相同符号的第二差值; 基于所述第二差值确定所述第二样本的偏移，所述偏移不同于所述第一样本的偏移; 并将第一偏移量应用于第一样本值，将第二偏移量应用于第二样本值以生成滤波图像。