公开(公告)号：US20190313130A1

公开(公告)日：2019-10-10

申请号：US16452315

申请日：2019-06-25

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/96 ,  H04N19/186 ,  H04N19/463 ,  H04N19/11 ,  H04N19/593 ,  H04N19/46 ,  H04N19/70

Abstract: An example device includes a memory and processing circuitry in communication with the memory. The processing circuitry of a device is configured to form a most probable mode (MPM) candidate list for a chroma block of the video data stored to the memory, such that the MPM candidate list includes one or more derived modes (DMs) associated with a luma block of the video data associated with the chroma block, and a plurality of luma prediction modes that can be used for coding luminance components of the video data. The processing circuitry is further configured to select a mode from the MPM candidate list, and to code the chroma block according to the mode selected from the MPM candidate list.

公开(公告)号：US20160212446A1

公开(公告)日：2016-07-21

申请号：US14912152

申请日：2014-09-26

Applicant: Hongbin LIU ,  Ying CHEN ,  Li ZHANG ,  Xin ZHAO ,  QUALCOMM INCORPORATED

Inventor： Hongbin LIU ,  Ying CHEN ,  Li ZHANG ,  Xin ZHAO

IPC: H04N19/597 ,  H04N19/70 ,  H04N19/13 ,  H04N19/18 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/593 ,  H04N19/11

CPC classification number: H04N19/597 ,  H04N19/11 ,  H04N19/13 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/18 ,  H04N19/593 ,  H04N19/70 ,  H04N19/91

Abstract: A video coder may perform a simplified depth coding (SDC) mode, including simplified residual coding, to code a depth block according to any of a variety of, e.g., at least three, depth intra prediction modes. For example, the video coder may perform the SDC mode for coding a depth block according to depth modeling mode (DMM) 3, DMM 4, or a region boundary chain coding mode. In such examples, the video coder may partition the depth block, and code respective DC residual values for each partition. In some examples, the video coder may perform the SDC mode for coding a depth block according to an intra prediction mode, e.g., an HEVC base specification intra prediction mode, such as a DC intra prediction mode or one of the directional intra prediction modes. In such examples, the video coder may code a single DC residual value for the depth block.

Abstract translation: 视频编码器可以执行简化的深度编码（SDC）模式，包括简化的残差编码，以根据各种，例如至少三个深度帧内预测模式中的任何一个对深度块进行编码。 例如，视频编码器可以根据深度建模模式（DMM）3，DMM 4或区域边界链编码模式执行用于对深度块进行编码的SDC模式。 在这样的示例中，视频编码器可以对深度块进行分区，并为每个分区编码相应的DC残留值。 在一些示例中，视频编码器可以执行根据帧内预测模式（例如，诸如DC帧内预测模式或诸如定向帧内预测模式之一的HEVC基本规范帧内预测模式）对深度块进行编码的SDC模式。 在这样的示例中，视频编码器可以为深度块编码一个DC剩余值。

公开(公告)号：US20180041779A1

公开(公告)日：2018-02-08

申请号：US15665492

申请日：2017-08-01

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/82 ,  H04N19/18 ,  H04N19/17 ,  H04N19/122 ,  H04N19/117 ,  H04N19/147

Abstract: The present disclosure provides various techniques related to adaptive loop filtering (ALF), and particular to geometry transformation-based ALF (GALF). In an aspect, a method for decoding video data includes receiving an encoded bitstream having coded video data from which reconstructed video units are generated, identifying multiple filter supports for the reconstructed video units, and filtering the reconstructed video units using the respective multiple filter supports to produce a decoded video output. Another method includes enabling block-level control of ALF of chroma components for the reconstructed video units, performing, for the reconstructed video units, the block-level ALF for the chroma components when ALF is enabled for one video block and skip performing the block-level ALF for the chroma components when ALF is disabled for another video block, and generating, based on the enabled block-level control of ALF, a decoded video output. Related devices, means, and computer-readable medium are also described.

公开(公告)号：US20190007705A1

公开(公告)日：2019-01-03

申请号：US16020511

申请日：2018-06-27

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/61 ,  H04N19/176 ,  H04N19/50 ,  H04N19/18

Abstract: Techniques are described in which a decoder is configured to receive an input data block and apply an inverse non-separable transform to at least part of the input data block to generate an inverse non-separable transform output coefficient block. The applying the inverse non-separable transform comprises assigning a window, assigning a weight for each position inside the assigned window, and determining the inverse non-separable transform output coefficient block based on the assigned weights. The decoder is further configured to forming a decoded video block based on the determined inverse non-separable transform output coefficient block, wherein forming the decoded video block comprises summing the residual video block with one or more predictive blocks.

公开(公告)号：US20190007688A1

公开(公告)日：2019-01-03

申请号：US16020179

申请日：2018-06-27

Applicant: QUALCOMM Incorporated

Inventor： Kai ZHANG ,  Jianle CHEN ,  Xin ZHAO ,  Marta KARCZEWICZ

IPC: H04N19/159 ,  H04N19/11 ,  H04N19/109 ,  H04N19/176 ,  H04N19/186 ,  H04N19/70

Abstract: An apparatus configured to encode or decode video data that includes a memory configured to store at least one reconstructed sample of video data and at least one processor, in communication with the memory, that is configured to identify at least one reconstructed sample, determine at least one extended angular intra prediction mode to use for intra prediction of at least one sample of a current block, intra predict, using the at least one extended angular intra prediction mode, at least one sample of the current block based on the at least one reconstructed sample, extended angular intra prediction modes including angular intra prediction modes other than angular prediction modes between horizontal −45 degrees and vertical −45 degrees, and encode or decode the current block based on the at least one predicted sample.

公开(公告)号：US20180041778A1

公开(公告)日：2018-02-08

申请号：US15665478

申请日：2017-08-01

Applicant: QUALCOMM Incorporated

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

IPC: H04N19/82 ,  H04N19/18 ,  H04N19/17 ,  H04N19/122 ,  H04N19/117 ,  H04N19/147

Abstract: The present disclosure provides various techniques related to adaptive loop filtering (ALF), and particular to geometry transformation-based ALF (GALF). In an aspect, a method for decoding video data includes receiving an encoded bitstream having coded video data from which reconstructed video units are generated, identifying multiple filter supports for the reconstructed video units, and filtering the reconstructed video units using the respective multiple filter supports to produce a decoded video output. Another method includes enabling block-level control of ALF of chroma components for the reconstructed video units, performing, for the reconstructed video units, the block-level ALF for the chroma components when ALF is enabled for one video block and skip performing the block-level ALF for the chroma components when ALF is disabled for another video block, and generating, based on the enabled block-level control of ALF, a decoded video output. Related devices, means, and computer-readable medium are also described.