公开(公告)号：WO2018237303A1

公开(公告)日：2018-12-27

申请号：PCT/US2018/039065

申请日：2018-06-22

Applicant: QUALCOMM INCORPORATED

Inventor： CHUANG, Hsiao-Chiang ,  CHEN, Jianle ,  ZHANG, Kai ,  LI, Xiang ,  KARCZEWICZ, Marta ,  CHEN, Yi-Wen ,  CHIEN, Wei-Jung

IPC: H04N19/577 ,  H04N19/59 ,  H04N19/523 ,  H04N19/57

Abstract: A device for decoding video data is configured to perform interpolation filtering using an N-tap filter to generate an interpolated search space for a first block of video data; obtain a first predictive block in the interpolated search space; determine that a second block of video data is encoded using a bi-directional inter prediction mode and a bi-directional optical flow (BIO) process; perform an inter prediction process for the second block of video data using the bi-directional inter prediction mode to determine a second predictive block; perform the BIO process on the second predictive block to determine a BIO-refined version of the second predictive block, wherein a number of reference samples used for calculating intermediate values for BIO offsets is limited to a region of (W+N-1)x(H+N-1) integer samples, wherein W and H correspond to a width and height of the second block in integer samples.

公开(公告)号：WO2018237295A1

公开(公告)日：2018-12-27

申请号：PCT/US2018/039051

申请日：2018-06-22

Applicant: QUALCOMM INCORPORATED

Inventor： ZHANG, Kai ,  CHEN, Jianle ,  ZHANG, Li ,  LI, Xiang ,  KARCZEWICZ, Marta

IPC: H04N19/107 ,  H04N19/159 ,  H04N19/182 ,  H04N19/503 ,  H04N19/593 ,  H04N19/176

Abstract: Techniques are described for using an inter-intra-prediction block. A video coder may generate a first prediction block according to an intra-prediction mode and generate a second prediction block according to an inter-prediction mode. The video coder may weighted combine, such as based on the intra-prediction mode, the two prediction blocks to generate an inter-intra-prediction block (e.g., final prediction block). In some examples, an inter-intra candidate is identified in a list of candidate motion vector predictors, and an inter-intra-prediction block is used based on identification of the inter-intra candidate in the list of candidate motion vector predictors.

公开(公告)号：WO2018067733A1

公开(公告)日：2018-04-12

申请号：PCT/US2017/055189

申请日：2017-10-04

Applicant: QUALCOMM INCORPORATED

Inventor： CHUANG, Hsiao-Chiang ,  CHEN, Jianle ,  LI, Xiang ,  ZHANG, Kai ,  BUGDAYCI SANSLI, Done ,  KARCZEWICZ, Marta ,  CHIEN, Wei-Jung ,  SUN, Yu-Chen

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/61 ,  H04N19/577

Abstract: Techniques and systems are provided for processing video data. For example, a current block of a picture of the video data can be obtained for processing by an encoding device or a decoding device. A pre-defined set of weights for template matching based motion compensation are also obtained. A plurality of metrics associated with one or more spatially neighboring samples of the current block and one or more spatially neighboring samples of at least one reference frame are determined. A set of weights are selected from the pre-defined set of weights to use for the template matching based motion compensation. The set of weights is determined based on the plurality of metrics. The template matching based motion compensation is performed for the current block using the selected set of weights.

Abstract translation: 提供了用于处理视频数据的技术和系统。 例如，可以获得视频数据的当前图片块以供编码设备或解码设备进行处理。 还获得了用于基于模板匹配的运动补偿的预定义的一组权重。 确定与当前块的一个或多个空间相邻样本和至少一个参考帧的一个或多个空间相邻样本相关联的多个度量。 从预先定义的一组权重中选择一组权重以用于基于模板匹配的运动补偿。 该组权重是基于多个度量来确定的。 使用选择的权重集对当前块执行基于模板匹配的运动补偿。

公开(公告)号：WO2018067732A1

公开(公告)日：2018-04-12

申请号：PCT/US2017/055188

申请日：2017-10-04

Applicant: QUALCOMM INCORPORATED

Inventor： CHUANG, Hsiao-Chiang ,  CHEN, Jianle ,  LI, Xiang ,  ZHANG, Kai ,  BUGDAYCI SANSLI, Done ,  KARCZEWICZ, Marta ,  CHIEN, Wei-Jung ,  SUN, Yu-Chen

IPC: H04N19/105 ,  H04N19/51 ,  H04N19/176

Abstract: Techniques and systems are provided for processing video data. For example, a current block of a picture of the video data can be obtained for processing by an encoding device or a decoding device. A parameter of the current block can be determined. Based on the determined parameter of the current block, at least one or more of a number of rows of samples or a number columns of samples in a template of the current block and at least one or more of a number of rows of samples or a number columns of samples in a template of a reference picture can be determined. Motion compensation for the current block can be performed. For example, one or more local illumination compensation parameters can be derived for the current block using the template of the current block and the template of the reference picture.

Abstract translation: 提供了用于处理视频数据的技术和系统。 例如，可以获得视频数据的当前图片块以供编码设备或解码设备进行处理。 可以确定当前块的参数。 基于所确定的当前块的参数，确定当前块的模板中的样本行数或样本数列中的至少一个或多个以及样本行数或至少一个或多个样本行 可以确定参考图片的模板中的样本的数量列。 可以执行当前程序段的运动补偿。 例如，可以使用当前块的模板和参考图片的模板为当前块导出一个或多个局部照明补偿参数。

公开(公告)号：WO2018067672A1

公开(公告)日：2018-04-12

申请号：PCT/US2017/055091

申请日：2017-10-04

Applicant: QUALCOMM INCORPORATED

Inventor： CHEN, Jianle ,  CHIEN, Wei-Jung ,  LI, Xiang ,  ZHANG, Li ,  KARCZEWICZ, Marta

IPC: H04N19/52 ,  H04N19/70 ,  H04N19/102 ,  H04N19/136 ,  H04N19/157

Abstract: A method of decoding video data, including receiving an encoded block of video data that was encoded using an inter-prediction mode, receiving one or more syntax elements indicating a motion vector difference (MVD) associated with the encoded block of video data, determining a current MVD precision, from three or more MVD precisions, for the one or more syntax elements indicating the MVD, wherein the three or more MVD precisions include an N-sample MVD precision, where N is an integer indicating a number of samples indicated by each successive codeword of the one or more syntax elements indicating the MVD, and wherein N is greater than 1, decoding the one or more syntax elements indicating the MVD using the determined current MVD precision, and decoding the encoded block of video data using the decoded MVD.

Abstract translation: 一种解码视频数据的方法，包括：接收使用帧间预测模式编码的视频数据的经编码块;接收指示与所述视频数据相关联的运动向量差异（MVD）的一个或一个以上语法元素; 对于指示MVD的一个或多个语法元素，从三个或更多个MVD精度确定当前MVD精度，其中三个或更多个MVD精度包括N样本MVD精度，其中N是整数 指示由指示所述MVD的所述一个或多个语法元素中的每个后续码字所指示的样本的数量，并且其中N大于1，使用所确定的当前MVD精度对指示所述MVD的所述一个或多个语法元素进行解码， 使用解码MVD的视频数据块。

公开(公告)号：WO2017091776A9

公开(公告)日：2017-06-01

申请号：PCT/US2016/063680

申请日：2016-11-23

Applicant: QUALCOMM INCORPORATED

Inventor： ZHANG, Li ,  CHAO, Pang ,  JIN, Guoxin ,  CHEN, Jianle ,  CHIEN, Wei-Jung ,  ZHAO, Xin ,  LI, Xiang ,  KARCZEWICZ, Marta

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/119 ,  H04N19/122 ,  H04N19/96 ,  H04N19/186

Abstract: A video coder determines a coding unit (CU) is partitioned into transform units (TUs) of the CU based on a tree structure. As part of determining the CU is partitioned into the TUs of the CU based on the tree structure, the video coder determines that a node in the tree structure has exactly two child nodes in the tree structure. A root node of the tree structure corresponds to a coding block of the CU, each respective non-root node of the tree structure corresponds to a respective block that is a partition of a block that corresponds to a parent node of the respective non-root node, and leaf nodes of the tree structure correspond to the TUs of the CU.

公开(公告)号：WO2017091776A1

公开(公告)日：2017-06-01

申请号：PCT/US2016/063680

申请日：2016-11-23

Applicant: QUALCOMM INCORPORATED

Inventor： ZHANG, Li ,  CHAO, Pang ,  JIN, Guoxin ,  CHEN, Jianle ,  CHIEN, Wei-Jung ,  ZHAO, Xin ,  LI, Xiang ,  KARCZEWICZ, Marta

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/119 ,  H04N19/122 ,  H04N19/96 ,  H04N19/186

CPC classification number: H04N19/91 ,  G06F17/147 ,  H04N19/105 ,  H04N19/119 ,  H04N19/122 ,  H04N19/124 ,  H04N19/13 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/42 ,  H04N19/573 ,  H04N19/587 ,  H04N19/59 ,  H04N19/593 ,  H04N19/597 ,  H04N19/61 ,  H04N19/625 ,  H04N19/649 ,  H04N19/82 ,  H04N19/96

Abstract: A video coder determines a coding unit (CU) is partitioned into transform units (TUs) of the CU based on a tree structure. As part of determining the CU is partitioned into the TUs of the CU based on the tree structure, the video coder determines that a node in the tree structure has exactly two child nodes in the tree structure. A root node of the tree structure corresponds to a coding block of the CU, each respective non-root node of the tree structure corresponds to a respective block that is a partition of a block that corresponds to a parent node of the respective non-root node, and leaf nodes of the tree structure correspond to the TUs of the CU.

Abstract translation: 视频译码器基于树结构确定编码单元（CU）被划分成CU的变换单元（TU）。 作为确定CU被基于树结构划分成CU的TU的一部分，视频译码器确定树结构中的节点恰好具有树结构中的两个子节点。 树结构的根节点对应于CU的编码块，树结构的每个相应的非根节点对应于作为与相应非根的父节点对应的块的分区的相应块 节点和树结构的叶节点对应于CU的TU。

公开(公告)号：WO2017091759A1

公开(公告)日：2017-06-01

申请号：PCT/US2016/063653

申请日：2016-11-23

Applicant: QUALCOMM INCORPORATED

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

IPC: H04N19/119 ,  H04N19/593 ,  H04N19/132 ,  H04N19/186

CPC classification number: H04N19/91 ,  G06F17/147 ,  H04N19/105 ,  H04N19/119 ,  H04N19/122 ,  H04N19/124 ,  H04N19/13 ,  H04N19/132 ,  H04N19/176 ,  H04N19/186 ,  H04N19/42 ,  H04N19/573 ,  H04N19/587 ,  H04N19/59 ,  H04N19/593 ,  H04N19/597 ,  H04N19/61 ,  H04N19/625 ,  H04N19/649 ,  H04N19/82 ,  H04N19/96

Abstract: A video coder reconstructs a set of chroma reference samples and reconstructs luma samples of a non-square prediction unit. Additionally, the video coder sub-samples the set of luma reference samples such that a total number of the luma reference samples that neighbor a longer side of the non-square prediction block is the same as a total number of the luma reference samples that neighbor a shorter side of the non-square prediction block. The video coder determines a Linear Model (LM) parameter based on formula I , where I is a total number of reference samples in the set of the luma reference samples, xi is a luma reference sample in the set of luma reference samples, yi is a chroma reference sample in the set of chroma reference samples. The video coder uses the LM parameter in a process to determine values of chroma samples of the non-square prediction block.

Abstract translation: 视频译码器重建一组色度参考样本且重建非正方形预测单元的明度样本。 另外，视频译码器对所述组亮度参考采样进行子采样，使得与非均方块预测块的较长边相邻的亮度参考采样的总数与相邻的亮度参考采样的总数相同 非方形预测块的较短边。 视频译码器基于公式I确定线性模型（LM）参数，其中I是亮度参考样本集合中的参考样本的总数， xi是亮度参考采样集合中的亮度参考采样，yi是该组色度参考采样中的色度参考采样。 视频编码器在进程中使用LM参数来确定非方形预测块的色度样本的值。