Sharp Kabushiki Kaisha Corporation

Dolby International Ab

Huawei Technologies Co., Limited

Fg Innovation Company Limited

Sharp Laboratories of America, Inc

Seung-Hwan Kim

Christopher A Segall

Kiran Mukesh Misra

Jie Zhao

Louis Joseph Kerofsky

Tomohiro Ikai

A method of encoding video data by a device is provided. Transform coefficient values associated with a chroma coding block are received. The chroma coding block is one of chroma coding blocks resulting from partitioning a chroma coding tree block and misaligned with a luma coding tree block corresponding to the chroma coding tree block and partitioned into luma coding blocks which are organized into quantization groups such that luma quantization parameters are determined for the luma coding tree block. One of the luma quantization parameters that is mapped to the chroma coding block is identified. A predictive quantization parameter is derived by using a value derived from the identified luma quantization parameter. A chroma quantization parameter is determined by adding a delta quantization parameter associated with each of the chroma coding blocks to the predictive quantization parameter. Level values are generated based on the determined chroma quantization parameter.

Systems and methods for varying quantization parameters

A video coding device may be configured to perform transform data coding according to one or more of the techniques described herein.

Systems and methods for coding transform data

A system utilizing a high throughput coding mode for CABAC in HEVC is described. The system may include an electronic device configured to obtain a block of data to be encoded using an arithmetic based encoder; to generate a sequence of syntax elements using the obtained block; to compare an Absolute-3 value of the sequence or a parameter associated with the Absolute-3 value to a preset value; and to convert the Absolute-3 value to a codeword using a first code or a second code that is different than the first code, according to a result of the comparison.

GOLOMB-RICE/EG coding technique for CABAC in HEVC

A video coding device may be configured to perform intra prediction coding according to one or more of the techniques described herein.

Method of decoding intra prediction data

Devices and methods for coding transform data

Golomb-Rice/EG coding technique for CABAC in HEVC

A method of encoding and decoding video data is described. According to an aspect of an invention, luma and chroma components may have separate quadtree plus binary tree (QTBT) structures and a scaling parameter for a chroma coding block is determined based on one or more properties of a luma component.

Systems and methods for coding video data using adaptive component scaling

A method of decoding video data by a device is provided. Level values corresponding to a chroma coding block are received. The chroma coding block is one of chroma coding blocks resulting from partitioning a chroma coding tree block. A luma coding tree block corresponding to the chroma coding tree block is partitioned into luma coding blocks which are organized into quantization groups such that luma quantization parameters are determined for the luma coding tree block. One of the luma quantization parameters that is mapped to the chroma coding block is identified. A predictive quantization parameter is derived by using a value derived from the identified luma quantization parameter. A chroma quantization parameter is determined by adding a delta quantization parameter associated with each of the chroma coding blocks to the predictive quantization parameter. Transform coefficient values are generated based on the determined chroma quantization parameter.

A method of filtering reconstructed video data, the method comprising: determining whether one or more conditions associated with the adjacent reconstructed video blocks are satisfied; selecting a filter based on whether the one or more conditions are satisfied; modifying sample values in the adjacent reconstructed video blocks based on the selected filter.

Systems and methods for applying deblocking filters to reconstructed video data

A method for decoding a bitstream comprising: (a) decoding at least one pictures from the bitstream; and (b) partitioning each of the at least one pictures into a plurality of slices, wherein each of the plurality of slices includes at least one coding units, wherein (c) palette table predictor size of a coding unit of the at least one coding units is set equal to 0 at start of a slice of the plurality of slices.

Growing community of inventors

Camas, WA, United States of America

Seung-Hwan Kim