公开(公告)号：US20130089145A1

公开(公告)日：2013-04-11

申请号：US13648121

申请日：2012-10-09

Applicant: QUALCOMM INCORPORATED

Inventor： Liwei Guo ,  Marta Karczewicz ,  Xianglin Wang

IPC: H04N7/32

CPC classification number: H04N19/11 ,  H04N19/122 ,  H04N19/147 ,  H04N19/176 ,  H04N19/46 ,  H04N19/61

Abstract: A video coder can be configured to determine an intra-prediction mode for a block of video data, identify a most probable transform based on the intra-prediction mode determined for the block of video data, and code an indication of whether the most probable transform is a transform used to encode the block of video data. The most probable transform can be a non-square transform.

Abstract translation: 视频编码器可以被配置为确定视频数据块的帧内预测模式，基于为视频数据块确定的帧内预测模式识别最可能的变换，并且编码最可能变换的指示 是用于对视频数据块进行编码的变换。 最可能的变换可以是非正方变换。

公开(公告)号：US11516473B2

公开(公告)日：2022-11-29

申请号：US17104353

申请日：2020-11-25

Applicant: QUALCOMM Incorporated

Inventor： In Suk Chong ,  Xianglin Wang ,  Cheng-Teh Hsieh

IPC: H04N19/13 ,  H03M7/30 ,  G06N3/02 ,  H04L29/06 ,  H04N19/176 ,  H04L69/04

Abstract: Techniques and systems are provided for compressing data in a neural network. For example, output data can be obtained from a node of the neural network. Re-arranged output data having a re-arranged scanning pattern can be generated. The re-arranged output data can be generated by re-arranging the output data into the re-arranged scanning pattern. One or more residual values can be determined for the re-arranged output data by applying a prediction mode to the re-arranged output data. The one or more residual values can then be compressed using a coding mode.

公开(公告)号：US10855986B2

公开(公告)日：2020-12-01

申请号：US15991685

申请日：2018-05-29

Applicant: QUALCOMM Incorporated

Inventor： In Suk Chong ,  Xianglin Wang ,  Cheng-Teh Hsieh

IPC: H04N19/13 ,  H03M7/30 ,  H04N19/176 ,  H04L29/06 ,  G06N3/02

Abstract: Techniques and systems are provided for compressing data in a neural network. For example, output data can be obtained from a node of the neural network. Re-arranged output data having a re-arranged scanning pattern can be generated. The re-arranged output data can be generated by re-arranging the output data into the re-arranged scanning pattern. One or more residual values can be determined for the re-arranged output data by applying a prediction mode to the re-arranged output data. The one or more residual values can then be compressed using a coding mode.

公开(公告)号：US10769819B2

公开(公告)日：2020-09-08

申请号：US16140108

申请日：2018-09-24

Applicant: QUALCOMM Incorporated

Inventor： In Suk Chong ,  Xianglin Wang ,  Cheng-Teh Hsieh

IPC: H03M7/24 ,  H04N19/182 ,  H04N19/124 ,  G06F7/483 ,  G06T9/00

Abstract: Certain aspects of the present disclosure provide a method of encoding data. The method generally includes receiving data comprising a fractional number comprising an exponential component and a fractional component, the exponential component being represented by an exponential bit sequence, the fractional component being represented by a fractional bit sequence. The method further includes determining if the fractional component is within a threshold of 0 or 1. The method further includes setting the fractional component to 0 when the fractional component is within the threshold of 0 or 1. The method further includes downscaling the fractional bit sequence based on a difference between the exponential component and a second threshold. The method further includes encoding the data. The method further includes transmitting the encoded data.

公开(公告)号：US10419781B2

公开(公告)日：2019-09-17

申请号：US15270914

申请日：2016-09-20

Applicant: QUALCOMM Incorporated

Inventor： Cheng-Teh Hsieh ,  In Suk Chong ,  Xianglin Wang

IPC: H04N19/93 ,  H04N19/13 ,  H04N19/146 ,  H04N19/184

Abstract: In one example, a device for accessing image data includes a memory configured to store image data, the memory comprising a first region and a second region; and one or more processing units configured to code most significant bits (MSBs) of a plurality of residuals of samples of a block of an image, each of the residuals representing a respective difference value between a respective raw sample value and a respective predicted value for the respective raw sample value, access the coded MSBs in the first region of the memory, and access least significant bits (LSBs) of the plurality of residuals of the samples in the second region of the memory.

公开(公告)号：US10356422B2

公开(公告)日：2019-07-16

申请号：US14735595

申请日：2015-06-10

Applicant: QUALCOMM Incorporated

Inventor： Xin Zhao ,  Wei-Jung Chien ,  Xianglin Wang

IPC: H04N19/105 ,  H04N19/147 ,  H04N19/124 ,  H04N19/176 ,  H04N19/139

Abstract: A system and method for applying Rate Distortion Optimized Quantization (RDOQ) is disclosed. In one example, there is provided a method that includes determining at least one prediction type and at least one partition type for use in encoding at least one block of video data. The method further includes applying a non-RDOQ quantization scheme to the at least one block of the video data. The non-RDOQ quantization scheme may be applied during the determination of the at least one prediction type and the at least one partition type. The method further includes applying an RDOQ quantization scheme to the at least one block upon determining the at least one prediction type and the at least one partition type.

公开(公告)号：US10291932B2

公开(公告)日：2019-05-14

申请号：US14710967

申请日：2015-05-13

Applicant: QUALCOMM Incorporated

Inventor： Wei-Jung Chien ,  Xianglin Wang ,  Xin Zhao

IPC: H04N19/523 ,  H04N19/105 ,  H04N19/182 ,  H04N19/176 ,  H04N19/117 ,  H04N19/80 ,  H04N19/59

Abstract: This disclosure provides systems and methods for low complexity quarter pel generation in motion search for video coding. The method can include storing full-pixel position information related to a plurality of rows of video information of a reference frame in a memory. The method can also include applying a vertical interpolation filter to the full-pixel position information for video information related to the reference frame to determine a first sub-pel position information. The method can also include applying a horizontal interpolation filter to the first sub-pel position information to determine a second sub-pel position information for the every other row of video data. The method can also include generating a syntax element indicating pixel motion of a current frame based on the first sub-pel position information. The method can also include encoding a block based on the generated syntax element.

公开(公告)号：US10250899B1

公开(公告)日：2019-04-02

申请号：US15713065

申请日：2017-09-22

Applicant: QUALCOMM Incorporated

Inventor： Cheng-Teh Hsieh ,  In Suk Chong ,  Xianglin Wang

IPC: H04N19/46 ,  H04N19/159 ,  H04N19/645 ,  H04N19/70 ,  H03M13/00

Abstract: In one example, a device for accessing image data includes a memory configured to store image data and one or more processors configured to code a plurality of bit length values for a plurality of block fixed length code length (bflc_len) values for a plurality of blocks of a tile or sub-tile of an image, the bit length values representing numbers of bits used to code the blfc_len values, code the bflc_len values for each of the plurality of blocks such that the bflc_len values have numbers of bits indicated by the respective bit length values, code the codewords for each of the plurality of blocks such that the codewords have the numbers of bits indicated by the bflc_len values for corresponding blocks of the plurality of blocks, and access the bit length values, the bflc_len values, and the codewords in the memory.

公开(公告)号：US20180146194A1

公开(公告)日：2018-05-24

申请号：US15876897

申请日：2018-01-22

Applicant: QUALCOMM Incorporated

Inventor： In Suk Chong ,  Geert Van der Auwera ,  Chengjie Tu ,  Xianglin Wang ,  Marta Karczewicz

IPC: H04N19/117 ,  H04N19/176 ,  H04N19/61 ,  H04N19/82

CPC classification number: H04N19/117 ,  H04N19/176 ,  H04N19/61 ,  H04N19/82

Abstract: A device for encoding video data may be configured to encode video data according to a set of sample adaptive offset (SAO) types; perform a plurality of coding passes to test a subset of the SAO types for a first block of video data, wherein the subset is smaller than the set; select from the subset of SAO types an SAO type for the first block of video data; and generate for inclusion in an encoded bitstream, information for identifying the selected SAO type for the first block.

公开(公告)号：US09955186B2

公开(公告)日：2018-04-24

申请号：US14992820

申请日：2016-01-11

Applicant: QUALCOMM Incorporated

Inventor： Jaehong Chon ,  In Suk Chong ,  Xianglin Wang ,  Cheng-Teh Hsieh

IPC: H04N7/12 ,  G06K9/36 ,  H04N19/593 ,  H04N19/119 ,  H04N19/147 ,  H04N19/11 ,  H04N19/14

CPC classification number: H04N19/593 ,  H04N19/11 ,  H04N19/119 ,  H04N19/14 ,  H04N19/147

Abstract: An example method includes determining a respective variance value for pixels of each respective sub-block of at least four sub-blocks of a current block of video data of a particular block size; determining an average of the determined variance values for the at least four sub-blocks; determining a maximum difference value for the current block based on the average and the variance values for the at least four sub-blocks; determining whether pixels of the current block are homogeneous based on whether the maximum difference value for the current block satisfies a threshold difference value; and in response to determining that the pixels of the current block are homogeneous, selectively including block sizes that are greater than or equal to a threshold block size in a sub-set of block sizes to evaluate for use when intra encoding the pixels of the current block.