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1. 发明申请

WO2019178721A1 IMPROVEMENTS TO ADVANCED TEMPORAL MOTION VECTOR PREDICTION 审中-公开
公开(公告)号：WO2019178721A1
公开(公告)日：2019-09-26
申请号：PCT/CN2018/079458
申请日：2018-03-19
申请人： QUALCOMM INCORPORATED , HAN, Yu , ZHANG, Kai , ZHANG, Li , CHIEN, Wei-Jung , KARCZEWICZ, Marta
发明人： HAN, Yu , ZHANG, Kai , ZHANG, Li , CHIEN, Wei-Jung , KARCZEWICZ, Marta
IPC分类号： H04N19/51
摘要： Methods and devices for decoding including a processor configured to determine which picture is a collocated picture, and determine a location of an associated block of the video data in the collocated picture that corresponds to the current block of video data in the current coding picture, based on using previously decoded blocks in the current coding picture to find an initial motion vector between the associated block in the collocated picture and the current block in the current coding picture, where the associated block of the video data includes at least one first derived motion vector. The processor configured to determine at least one second derived motion vector associated with the current block in the current coding picture, when the initial motion vector points to the collocated picture, based on the at least on first derived motion vector associated with the associated block in the collocated picture.

2. 发明申请

WO2019136657A1 VIDEO CODING USING LOCAL ILLUMINATION COMPENSATION 审中-公开
公开(公告)号：WO2019136657A1
公开(公告)日：2019-07-18
申请号：PCT/CN2018/072218
申请日：2018-01-11
申请人： QUALCOMM INCORPORATED , HAN, Yu , ZHANG, Kai , CHIEN, Wei-Jung , KARCZEWICZ, Marta
发明人： HAN, Yu , ZHANG, Kai , CHIEN, Wei-Jung , KARCZEWICZ, Marta
IPC分类号： H04N19/17
摘要： A video coding device includes a memory configured to store video data, and processing circuitry in communication with the memory. The processing circuitry is configured to determine that a current block of the video data stored to the memory is to be coded according to a merge mode, and to determine a temporal candidate associated with a merge candidate list for the current block in accordance with the merge mode. The processing circuitry is further configured to determine a pool of spatial candidates associated with the merge candidate list, based on each spatial candidate of the pool having a same reference picture as the temporal candidate, and to set a local illumination compensation (LIC) flag value for the temporal candidate based on respective LIC flag values of one or more spatial candidates of the pool.

3. 发明申请

WO2013003741A1 VLC COEFFICIENT CODING FOR LUMA AND CHROMA BLOCK 审中-公开
标题翻译：用于LUMA和CHROMA块的VLC系数编码
公开(公告)号：WO2013003741A1
公开(公告)日：2013-01-03
申请号：PCT/US2012/044976
申请日：2012-06-29
申请人： QUALCOMM INCORPORATED , KARCZEWICZ, Marta , WANG, Xianglin , CHIEN, Wei-Jung , GUO, Liwei
发明人： KARCZEWICZ, Marta , WANG, Xianglin , CHIEN, Wei-Jung , GUO, Liwei
IPC分类号： H04N7/26 , H04N7/30 , H04N7/50 , H03M7/30
CPC分类号： H04N19/91 , H04N19/13 , H04N19/176 , H04N19/186 , H04N19/60 , H04N19/61
摘要： This disclosure describes techniques for coding transform coefficients for a block of video data. According to these techniques, a video coder (a video encoder or video decoder) determines whether a block of video data is a luma block or a chroma block. If the block of video data is a luma block, the video coder adaptively updates a VLC table index value based on a code number cn and value of a scaling factor. However, if the block of video data is a chroma block, the video coder adaptively updates the VLC table index value based on the code number cn and without using the scaling factor. The video coder uses the updated VLC table index value to select a VLC table of a plurality of VLC tables that are used to encode or decode the block of video data.
摘要翻译：本公开描述了用于对视频数据块的变换系数进行编码的技术。根据这些技术，视频编码器（视频编码器或视频解码器）确定视频数据块是亮度块还是色度块。如果视频数据块是亮度块，则视频编码器基于码数cn和缩放因子的值自适应地更新VLC表索引值。然而，如果视频数据块是色度块，则视频编码器基于码数cn自适应地更新VLC表索引值，而不使用缩放因子。视频编码器使用更新的VLC表索引值来选择用于对视频数据块进行编码或解码的多个VLC表的VLC表。

4. 发明申请

WO2013003581A1 CODING OF LAST SIGNIFICANT TRANSFORM COEFFICIENT 审中-公开
标题翻译：最新重要变换系数的编码
公开(公告)号：WO2013003581A1
公开(公告)日：2013-01-03
申请号：PCT/US2012/044629
申请日：2012-06-28
申请人： QUALCOMM INCORPORATED , SOLE ROJALS, Joel , CHIEN, Wei-Jung , JOSHI, Rajan Laxman , KARCZEWICZ, Marta
发明人： SOLE ROJALS, Joel , CHIEN, Wei-Jung , JOSHI, Rajan Laxman , KARCZEWICZ, Marta
IPC分类号： H04N7/26
CPC分类号： H04N19/13 , H04N19/129 , H04N19/196 , H04N19/44 , H04N19/463 , H04N19/91
摘要： A video encoder determines that the last significant coefficient (LSC) of a transform coefficient block occurs at a given ordinal position according to a coding scanning order. The video encoder generates a coordinate indicator that specifies the coordinates of a given transform coefficient in the transform coefficient block. The given transform coefficient occurs at the same ordinal position according to an assumed scanning order. A video decoder receives the coordinate indicator and converts the coordinate indicator into a scan-based LSC indicator. The scan-based LSC indicator indicates the ordinal position of the LSC.
摘要翻译：视频编码器根据编码扫描顺序确定变换系数块的最后有效系数（LSC）发生在给定的顺序位置处。视频编码器生成指定变换系数块中的给定变换系数的坐标的坐标指示符。给定的变换系数根据假定的扫描顺序发生在相同的序数位置。视频解码器接收坐标指示符并将坐标指示符转换为基于扫描的LSC指示符。基于扫描的LSC指示符表示LSC的顺序位置。

5. 发明申请

WO2012170812A1 ENHANCED INTRA-PREDICTION MODE SIGNALING FOR VIDEO CODING USING NEIGHBORING MODE 审中-公开
标题翻译：使用相邻模式进行视频编码的增强型预测模式信号
公开(公告)号：WO2012170812A1
公开(公告)日：2012-12-13
申请号：PCT/US2012/041545
申请日：2012-06-08
申请人： QUALCOMM INCORPORATED , CHIEN, Wei-Jung , KARCZEWICZ, Marta , WANG, Xianglin
发明人： CHIEN, Wei-Jung , KARCZEWICZ, Marta , WANG, Xianglin
IPC分类号： H04N7/26 , H04N7/34
CPC分类号： H04N19/593 , H04N19/11 , H04N19/176 , H04N19/186 , H04N19/196 , H04N19/46 , H04N19/463
摘要： This disclosure describes techniques for intra-prediction mode signaling for video coding. In one example, a video coder is configured to determine, for a block of video data, a set of most probable intra-prediction modes such that the set of most probable intraprediction modes has a size that is equal to a predetermined number that is greater than or equal to two. The video coder is also configured to code a value representative of an actual intra-prediction mode for the block based at least in part on the set of most probable intraprediction modes and code the block using the actual intra-prediction mode. The video coder may further be configured to code the block using the actual intra-prediction mode, e.g., to encode or decode the block. Video encoders and video decoders may implement these techniques.
摘要翻译：本公开描述了用于视频编码的帧内预测模式信令的技术。在一个示例中，视频编码器被配置为针对视频数据块确定最可能的帧内预测模式的集合，使得最可能的预测模式的集合具有等于大于预定数量的大小大于或等于2。视频编码器还被配置为至少部分地基于最可能的预测模式的集合来编码表示块的实际帧内预测模式的值，并且使用实际帧内预测模式对块进行编码。视频编码器还可以被配置为使用实际的帧内预测模式对块进行编码，例如对块进行编码或解码。视频编码器和视频解码器可以实现这些技术。

6. 发明申请

WO2012167119A1 INTRA PREDICTION MODE CODING WITH DIRECTIONAL PARTITIONS 审中-公开
标题翻译：内部预测模式编码与方向分区
公开(公告)号：WO2012167119A1
公开(公告)日：2012-12-06
申请号：PCT/US2012/040510
申请日：2012-06-01
申请人： QUALCOMM INCORPORATED , CHIEN, Wei-Jung , ZHENG, Yunfei , KARCZEWICZ, Marta
发明人： CHIEN, Wei-Jung , ZHENG, Yunfei , KARCZEWICZ, Marta
IPC分类号： H04N7/26 , H04N7/34
CPC分类号： H04N19/11 , H04N19/176 , H04N19/46 , H04N19/593
摘要： A video coder can determine a most probable mode for a block of video data using non-square partitions based on the direction of the non-square partitions. When the direction of the non-square partitions is vertical, an intra prediction mode of a left-neighboring block can be selected as the most probable intra prediction mode, and when the direction of the non-square partitions is horizontal, an intra prediction mode of an above-neighboring block can be selected as the most probable intra prediction mode.
摘要翻译：视频编码器可以基于非正方形分区的方向，使用非正方形分区来确定视频数据块的最可能模式。当非正方形分区的方向是垂直方向时，可以选择左相邻块的帧内预测模式作为最可能的帧内预测模式，并且当非正方形分区的方向是水平时，帧内预测模式可以选择上述相邻块作为最可能的帧内预测模式。

7. 发明申请

WO2012102973A1 SINGLE REFERENCE PICTURE LIST CONSTRUCTION FOR VIDEO CODING 审中-公开
标题翻译：用于视频编码的单一参考图片列表结构
公开(公告)号：WO2012102973A1
公开(公告)日：2012-08-02
申请号：PCT/US2012/022102
申请日：2012-01-20
申请人： QUALCOMM INCORPORATED , CHEN, Peisong , CHIEN, Wei-Jung , KARCZEWICZ, Marta , CHEN, Ying
发明人： CHEN, Peisong , CHIEN, Wei-Jung , KARCZEWICZ, Marta , CHEN, Ying
IPC分类号： H04N7/26 , H04N7/46 , H04N7/50
CPC分类号： H04N19/577 , H04N19/109 , H04N19/159 , H04N19/17 , H04N19/174 , H04N19/176 , H04N19/46 , H04N19/61
摘要： The example techniques described in this disclosure provide for an efficient manner to encode or decode a video block of a picture using a single reference picture list. The single reference picture list may include identifiers for reference picture or pictures used to encode or decode the video block. In some examples, a video encoder or decoder may encode or decode a video block that is predicted from two reference pictures using the single reference picture list, and encode or decode a video block that is predicted from one reference picture using the same, single reference picture list.
摘要翻译：本公开中描述的示例技术提供了使用单个参考图片列表对图像的视频块进行编码或解码的有效方式。单个参考图片列表可以包括用于编码或解码视频块的参考图片或图片的标识符。在一些示例中，视频编码器或解码器可以使用单个参考图片列表从两个参考图片预测的视频块编码或解码，并且使用相同的单个参考来对从一个参考图片预测的视频块进行编码或解码图片列表。

8. 发明申请

WO2012087499A1 SUB-PIXEL INTERPOLATION FOR VIDEO CODING 审中-公开
标题翻译：用于视频编码的子像素插值
公开(公告)号：WO2012087499A1
公开(公告)日：2012-06-28
申请号：PCT/US2011/062334
申请日：2011-11-29
申请人： QUALCOMM INCORPORATED , CHIEN, Wei-Jung , KARCZEWICZ, Marta
发明人： CHIEN, Wei-Jung , KARCZEWICZ, Marta
IPC分类号： H04N7/26 , H04N7/36
CPC分类号： H04N19/523
摘要： In one example, an apparatus includes a video coder configured to determine a first set of support pixels to interpolate a value for a first sub-integer pixel position of a pixel of a reference block of video data; determine a second, different set of support pixels used to interpolate a value for a second sub-integer pixel position of the pixel; determine a third, different set of support pixels used to interpolate a value for a third sub-integer pixel position of the pixel; combine corresponding values from the first, second, and third sets of support pixels; apply an interpolation filter to the combined values to calculate a value for a fourth sub-integer-pixel comprising a one-eighth-integer position of the pixel and code a portion of a current block of the video data relative to the fourth one-eighth-integer pixel position of the reference block.
摘要翻译：在一个示例中，一种设备包括：视频编码器，被配置为确定第一组支持像素以插值视频数据的参考块的像素的第一子整数像素位置的值; 确定用于内插所述像素的第二子整数像素位置的值的第二不同的支持像素集合; 确定用于内插像素的第三子整数像素位置的值的第三不同的支持像素集合; 组合来自第一，第二和第三组支持像素的对应值; 将内插滤波器应用于组合值以计算包括像素的八分之一整数位置的第四子整数像素的值，并且将视频数据的当前块的一部分相对于第四个八分之一 - 参考块的整数像素位置。

9. 发明申请

WO2012078767A1 CODEWORD ADAPTATION FOR VARIABLE LENGTH CODING 审中-公开
标题翻译：可变长度编码的编码器适配
公开(公告)号：WO2012078767A1
公开(公告)日：2012-06-14
申请号：PCT/US2011/063757
申请日：2011-12-07
申请人： QUALCOMM Incorporated , CHIEN, Wei-Jung , WANG, Xianglin , KARCZEWICZ, Marta , GUO, Liwei
发明人： CHIEN, Wei-Jung , WANG, Xianglin , KARCZEWICZ, Marta , GUO, Liwei
IPC分类号： H03M7/42 , H03M7/40 , H04N7/26
CPC分类号： H03M7/40 , H03M7/42 , H04N19/91
摘要： In one example, this disclosure describes a method of codeword adaptation for variable length coding. The method includes applying a first codeword adaptation scheme to groups of codewords in a variable length coding (VLC) table to change mappings of codewords within the groups to events in the VLC table; and applying a second codeword adaptation scheme to individual codewords within the groups of codewords in the VLC table to change mappings of the codewords to the events within the groups in the VLC table.
摘要翻译：在一个示例中，本公开描述了用于可变长度编码的码字适配的方法。所述方法包括：在可变长度编码（VLC）表中应用码字组适配方案以改变所述组内的码字的映射到所述VLC表中的事件的映射; 以及将所述VLC表中的码字组内的各个码字应用第二码字适配方案，以将所述码字的映射改变为所述VLC表中的组内的事件。

10. 发明申请

WO2012078762A1 CODEWORD ADAPTATION FOR VARIABLE LENGTH CODING 审中-公开
标题翻译：可变长度编码的编码器适配
公开(公告)号：WO2012078762A1
公开(公告)日：2012-06-14
申请号：PCT/US2011/063750
申请日：2011-12-07
申请人： QUALCOMM Incorporated , CHIEN, Wei-Jung , WANG, Xianglin , KARCZEWICZ, Marta , GUO, Liwei
发明人： CHIEN, Wei-Jung , WANG, Xianglin , KARCZEWICZ, Marta , GUO, Liwei
IPC分类号： H03M7/42 , H03M7/40 , H04N7/26
CPC分类号： H03M7/40 , H03M7/42 , H04N19/91
摘要： In one example, this disclosure describes a method of codeword adaptation for variable length coding. The method comprises applying a first codeword adaptation scheme to a first group of codewords of a variable length coding (VLC) table to change a mapping of codewords to events in the VLC table; and applying a second codeword adaptation scheme to a second group of codewords of the VLC table to change the mapping of the codewords to the events in the VLC table.
摘要翻译：在一个示例中，本公开描述了用于可变长度编码的码字适配的方法。该方法包括将第一码字适配方案应用于可变长度编码（VLC）表的第一组码字，以改变码字到VLC表中的事件的映射; 以及将第二码字适配方案应用于所述VLC表的第二组码字，以将所述码字的映射改变为所述VLC表中的事件。

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