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1.发明申请公开(公告)号：WO2018129539A1
公开(公告)日：2018-07-12
申请号：PCT/US2018/012990
申请日：2018-01-09
Applicant: QUALCOMM INCORPORATED
Inventor： SUN, Yu-Chen , CHIEN, Wei-Jung , ZHANG, Li , CHEN, Yi-Wen , HU, Nan , KARCZEWICZ, Marta
IPC: H04N19/70 , H04N19/523 , H04N19/57 , H04N19/176
Abstract: A video encoder is configured to determine whether to enable or disable an integer motion vector precision restriction and whether to enable or disable an illumination compensation (IC) tool by: for a large search range in a reference picture, performing first motion estimation tests, wherein performing the first motion estimation tests comprises performing motion estimation tests only with the IC tool disabled and the integer motion vector precision restriction disabled and with the IC tool enabled and the integer motion vector precision restriction disabled; based on the first motion estimation tests, determining a small search range, wherein the small search range is smaller than the large search range; for the small search range, performing second motion estimation tests; and based on the second motion estimation tests, determining whether to enable or disable the integer motion vector precision restriction and whether to enable or disable the IC tool.
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2.发明申请
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。
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3.发明申请SYSTEMS AND METHODS OF ADAPTIVELY DETERMINING TEMPLATE SIZE FOR ILLUMINATION COMPENSATION 审中-公开自适应确定照明补偿模板大小的系统和方法
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。
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公开(公告)号：WO2019051146A1
公开(公告)日：2019-03-14
申请号：PCT/US2018/049828
申请日：2018-09-07
Applicant: QUALCOMM INCORPORATED
Inventor： SUN, Yu-Chen , CHEN, Yi-Wen , CHIEN, Wei-Jung , ZHANG, Li , LI, Xiang , KARCZEWICZ, Marta
IPC: H04N19/563 , H04N19/51
CPC classification number: H04N19/563 , H04N19/176 , H04N19/182 , H04N19/52 , H04N19/82
Abstract: A video coder, such as a video encoder or a video decoder, may use reference pixels in a first picture to pad pixels outside a picture boundary of a second picture. The second picture is a different picture from the first picture. The padded pixels are in a padding area surrounding the second picture. The video coder may encode or decode one or more blocks of the video data based on the padded pixels.
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公开(公告)号：WO2018175409A1
公开(公告)日：2018-09-27
申请号：PCT/US2018/023319
申请日：2018-03-20
Applicant: QUALCOMM INCORPORATED
Inventor： ZHANG, Li , SUN, Yu-Chen , CHIEN, Wei-Jung , CHEN, Jianle , ZHANG, Kai , CHEN, Yi-Wen , KARCZEWICZ, Marta
IPC: H04N19/82 , H04N19/86 , H04N19/96 , H04N19/119 , H04N19/154 , H04N19/176
CPC classification number: H04N19/117 , H04N19/107 , H04N19/119 , H04N19/154 , H04N19/176 , H04N19/82 , H04N19/86 , H04N19/96
Abstract: A video encoder reconstructs pixels of a current block and applies a deblocking filter to the reconstructed pixels of the current block to derive deblocking-filtered reconstructed pixels of the current block. Furthermore, the video encoder calculates distortion values based on values of the deblocking-filtered reconstructed pixels of the current block and original pixels of the current block. The video encoder selects, based on the calculated distortion values, an encoding mode for the current block. The encoding mode for the current block is a partitioning mode for the current block or a coding unit mode for the current block.
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公开(公告)号：WO2018175911A1
公开(公告)日：2018-09-27
申请号：PCT/US2018/024066
申请日：2018-03-23
Applicant: QUALCOMM INCORPORATED
Inventor： SEREGIN, Vadim , SUN, Yu-Chen , CHEN, Yi-Wen , CHIEN, Wei-Jung , ZHAO, Xin , JOSHI, Rajan Laxman , KARCZEWICZ, Marta
IPC: H04N19/52 , H04N19/567
Abstract: Techniques are described to increase the coding efficiency of information indicating a sign of a motion vector difference (MVD) component. A video coder may determine a MVD component sign predictor, and determine whether the MVD component sign predictor is the MVD component sign based on an indicator that is transmitted or received. In some examples, the indicator may be context coded, which promotes coding efficiencies.
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公开(公告)号：WO2018169923A1
公开(公告)日：2018-09-20
申请号：PCT/US2018/022129
申请日：2018-03-13
Applicant: QUALCOMM INCORPORATED
Inventor： LI, Xiang , CHEN, Yi-Wen , CHEN, Jianle , CHUANG, Hsiao-Chiang , CHIEN, Wei-Jung , SUN, Yu-Chen , KARCZEWICZ, Marta
Abstract: Techniques and systems are provided for deriving one or more sets of affine motion parameters at a decoder. For example, the decoder can obtain video data from an encoded video bitstream. The video data includes at least a current picture and a reference picture. The decoder can determine a set of affine motion parameters for a current block of the current picture. The set of affine motion parameters can be used for performing motion compensation prediction for the current block. The set of affine motion parameters can be determined using a current affine template of the current block and a reference affine template of the reference picture. In some cases, an encoder can determine a set of affine motion parameters for a current block using a current affine template of the current block and a reference affine template of the reference picture, and can generate an encoded video bitstream that includes a syntax item indicating template matching based affine motion derivation mode is to be used by a decoder for the current block. The encoded video bitstream may not include any affine motion parameters for determining the set of affine motion parameters.
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公开(公告)号：WO2019075375A1
公开(公告)日：2019-04-18
申请号：PCT/US2018/055679
申请日：2018-10-12
Applicant: QUALCOMM INCORPORATED
Inventor： CHEN, Yi-Wen , SUN, Yu-Chen , CHIEN, Wei-Jung , CHUANG, Hsiao-Chiang , KARCZEWICZ, Marta
IPC: H04N19/105 , H04N19/70 , H04N19/513 , H04N19/537
CPC classification number: H04N19/521 , H04N19/105 , H04N19/176 , H04N19/43 , H04N19/513 , H04N19/52 , H04N19/54 , H04N19/70
Abstract: Motion compensated prediction using affine motion models can be used to improve coding efficiency. In a practical encoder/decoder, a line buffer is used to store associated data for neighboring blocks. Embodiments of affine model based motion compensated prediction include methods and systems of determining motion vectors for control points that are aware of line buffer storage limitations.
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公开(公告)号：WO2018231700A1
公开(公告)日：2018-12-20
申请号：PCT/US2018/036883
申请日：2018-06-11
Applicant: QUALCOMM INCORPORATED
Inventor： CHEN, Yi-Wen , CHIEN, Wei-Jung , SUN, Yu-Chen , ZHANG, Li , LEE, Sungwon , LI, Xiang , CHUANG, Hsiao-Chiang , CHEN, Jianle , SEREGIN, Vadim , KARCZEWICZ, Marta
IPC: H04N19/52
Abstract: A video coder may determine a motion vector of a non-adjacent block of a current picture of the video data. The non-adjacent block is non-adjacent to a current block of the current picture. Furthermore, the video coder determines, based on the motion vector of the non-adjacent block, a motion vector predictor (MVP) for the current block. The video coder may determine a motion vector of the current block. The video coder may also determine a predictive block based on the motion vector of the current block.
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公开(公告)号：WO2018067823A1
公开(公告)日：2018-04-12
申请号：PCT/US2017/055350
申请日：2017-10-05
Applicant: QUALCOMM INCORPORATED
Inventor： CHEN, Yi-Wen , CHIEN, Wei-Jung , ZHANG, Li , SUN, Yu-Chen , CHEN, Jianle , KARCZEWICZ, Marta
IPC: H04N19/52 , H04N19/537
Abstract: A video decoder selects a source affine block. The source affine block is an affine-coded block that spatially neighbors a current block. Additionally, the video decoder extrapolates motion vectors of control points of the source affine block to determine motion vector predictors for control points of the current block. The video decoder inserts, into an affine motion vector predictor (MVP) set candidate list, an affine MVP set that includes the motion vector predictors for the control points of the current block. The video decoder also determines, based on an index signaled in a bitstream, a selected affine MVP set in the affine MVP set candidate list. The video decoder obtains, from the bitstream, motion vector differences (MVDs) that indicate differences between motion vectors of the control points of the current block and motion vector predictors in the selected affine MVP set.
Abstract translation: 视频解码器选择源仿射块。 源仿射块是在空间上与当前块相邻的仿射编码块。 另外，视频解码器推断源仿射块的控制点的运动向量以确定当前块的控制点的运动向量预测器。 视频解码器将仿射MVP集插入到仿射运动矢量预测器（MVP）集候选列表中，该仿射MVP集包括用于当前块的控制点的运动矢量预测器。 视频解码器还基于在位流中用信号发送的索引确定仿射MVP集合候选列表中的选定仿射MVP集合。 视频解码器从比特流获得指示当前块的控制点和选定的仿射MVP集中的运动矢量预测器的运动矢量之间的差异的运动矢量差（MVD）。
