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1. 发明申请

WO2011103206A1 ADAPTIVE MOTION RESOLUTION FOR VIDEO CODING 审中-公开
标题翻译：用于视频编码的自适应运动分辨率
公开(公告)号：WO2011103206A1
公开(公告)日：2011-08-25
申请号：PCT/US2011/025113
申请日：2011-02-16
申请人： QUALCOMM INCORPORATED , CHIEN, Wei-Jung , KARCZEWICZ, Marta , CHEN, Peisong
发明人： CHIEN, Wei-Jung , KARCZEWICZ, Marta , CHEN, Peisong
IPC分类号： H04N7/26 , H04N7/36 , H04N7/50
CPC分类号： H04N19/58 , H04N19/102 , H04N19/147 , H04N19/172 , H04N19/176 , H04N19/46 , H04N19/52 , H04N19/523 , H04N19/61
摘要： A video encoder may encode video data by adaptively selecting between one-eighth-pixel and one-quarter-pixel precision motion vectors, and signal the selected precision. In one example, an apparatus includes a video encoder to encode a block of video data using a one-eighth-pixel precision motion vector when use of the one-eighth-pixel precision motion vector is determined to be preferable for the block over a one-quarter-pixel precision motion vector, and to generate a signal value indicative of the use of the one-eighth-pixel precision motion vector for the block, and an output interface to output the encoded block and the signal value. A video decoder may be configured to receive the signal value and the encoded block, analyze the signal value to determine whether the block was encoded using one-eighth-pixel precision or one-quarter-pixel precision, and decode the block based on the determination.
摘要翻译：视频编码器可以通过在八分之一像素和四分之一像素精度的运动矢量之间进行自适应选择来对视频数据进行编码，并且将所选精度发信号。在一个示例中，一种装置包括：视频编码器，当使用八分之一像素的精确运动矢量被确定为优于一块时，使用八分之一像素的精确运动矢量对视频数据块进行编码并且生成指示使用该块的八分之一像素精度运动矢量的信号值，以及输出接口以输出编码块和信号值。视频解码器可以被配置为接收信号值和编码块，分析信号值以确定块是使用八分之一像素精度还是四分之一像素精度进行编码，并且基于该确定对块进行解码。

2. 发明申请

WO2013006483A1 VIDEO CODING USING ADAPTIVE MOTION VECTOR RESOLUTION 审中-公开
标题翻译：使用自适应运动矢量分辨率进行视频编码
公开(公告)号：WO2013006483A1
公开(公告)日：2013-01-10
申请号：PCT/US2012/045078
申请日：2012-06-29
申请人： QUALCOMM INCORPORATED , CHIEN, Wei-Jung , CHEN, Peisong , KARCZEWICZ, Marta
发明人： CHIEN, Wei-Jung , CHEN, Peisong , KARCZEWICZ, Marta
IPC分类号： H04N7/26 , H04N7/50 , H04N19/00
CPC分类号： H04N19/13 , H04N19/513 , H04N19/517 , H04N19/52 , H04N19/523 , H04N19/61 , H04N19/70 , H04N19/91
摘要： In one example, a video coding device includes a video coder configured to code information representative of whether an absolute value of an x-component of a motion vector difference value for a current block of video data is greater than zero, code information representative of whether an absolute value of a y-component of the motion vector difference value is greater than zero, when the absolute value of the x-component is greater than zero, code information representative of the absolute value of the x-component, when the absolute value of the y-component is greater than zero, code information representative of the absolute value of the y-component, when the absolute value of the x-component is greater than zero, code a sign of the x-component, and when the absolute value of the y-component is greater than zero, code a sign of the y-component.
摘要翻译：在一个示例中，视频编码装置包括视频编码器，被配置为对表示当前视频数据块的运动矢量差值的x分量的绝对值是否大于零的代码信息进行编码，代表信息是否表示当x分量的绝对值大于零时，运动矢量差值的y分量的绝对值大于零，表示x分量的绝对值的代码信息，当绝对值的y分量大于零，代表y分量的绝对值的代码信息，当x分量的绝对值大于零时，编码x分量的符号，当绝对值 y分量的值大于零，编码y分量的符号。

3. 发明申请

WO2012173991A1 BORDER PIXEL PADDING FOR INTRA PREDICTION IN VIDEO CODING 审中-公开
标题翻译：用于视频编码的内部预测的边界像素包装
公开(公告)号：WO2012173991A1
公开(公告)日：2012-12-20
申请号：PCT/US2012/042052
申请日：2012-06-12
申请人： QUALCOMM INCORPORATED , WANG, Xianglin , CHIEN, Wei-Jung , KARCZEWICZ, Marta , CHEN, Peisong , CHEN, Ying
发明人： WANG, Xianglin , CHIEN, Wei-Jung , KARCZEWICZ, Marta , CHEN, Peisong , CHEN, Ying
IPC分类号： H04N7/26 , H04N7/34 , H04N7/50
CPC分类号： H04N19/182 , H04N19/105 , H04N19/593 , H04N19/61
摘要： A video coder performs a padding operation that processes a set of border pixels according to an order. The order starts at a bottom-left border pixel and proceeds through the border pixels sequentially to a top-right border pixel. When the padding operation processes an unavailable border pixel, the padding operation predicts a value of the unavailable border pixel based on a value of a border pixel previously processed by the padding operation. The video coder may generate an intra-predicted video block based on the border pixels.
摘要翻译：视频编码器根据顺序执行处理一组边框像素的填充操作。该顺序从左下角的边框像素开始，并且顺序通过边框像素顺序到右上边框像素。当填补操作处理不可用边界像素时，填充操作基于先前由填充操作处理的边界像素的值来预测不可用边框像素的值。视频编码器可以基于边界像素生成帧内预测视频块。

4. 发明申请

WO2012102927A1 PERFORMING MOTION VECTOR PREDICTION FOR VIDEO CODING 审中-公开
标题翻译：执行视频编码运动矢量预测
公开(公告)号：WO2012102927A1
公开(公告)日：2012-08-02
申请号：PCT/US2012/021742
申请日：2012-01-18
申请人： QUALCOMM INCORPORATED , CHIEN, Wei-Jung , CHEN, Peisong , COBAN, Muhammed Zeyd , KARCZEWICZ, Marta
发明人： CHIEN, Wei-Jung , CHEN, Peisong , COBAN, Muhammed Zeyd , KARCZEWICZ, Marta
IPC分类号： H04N7/26 , H04N7/68
CPC分类号： H04N19/61 , H04N19/46 , H04N19/51 , H04N19/52 , H04N19/70 , H04N19/895
摘要： In general, techniques are described for performing motion vector prediction for video coding. An apparatus comprising a motion compensation unit may implement the techniques. The motion compensation unit determines spatial candidate motion vectors (MVPs) associated with a current portion of a video frame and prunes the spatial candidate motion vectors to remove duplicates without removing a temporal candidate motion vector. The motion compensation unit selects one of the temporal candidate motion vector or one of the spatial candidate motion vectors remaining after pruning as a selected candidate motion vector based on a motion vector predictor (MVP) index signaled in a bitstream and performs motion compensation based on the selected candidate motion vector.
摘要翻译：通常，描述了用于执行视频编码的运动矢量预测的技术。包括运动补偿单元的装置可以实现这些技术。运动补偿单元确定与视频帧的当前部分相关联的空间候选运动矢量（MVP），并修剪空间候选运动矢量以去除重复，而不去除时间候选运动矢量。运动补偿单元基于在比特流中发信号的运动矢量预测器（MVP）索引，选择剪枝之后剩余的时间候选运动矢量或空间候选运动矢量中的一个作为选择的候选运动矢量，并基于选择的候选运动矢量。

5. 发明申请

WO2012009237A1 VARIABLE LOCALIZED BIT DEPTH INCREASE FOR FIXED-POINT TRANSFORMS IN VIDEO CODING 审中-公开
标题翻译：视频编码中固定点变换的可变本地化位深度增加
公开(公告)号：WO2012009237A1
公开(公告)日：2012-01-19
申请号：PCT/US2011/043462
申请日：2011-07-08
申请人： QUALCOMM INCORPORATED , JOSHI, Rajan, L. , CHIEN, Wei-Jung , KARCZEWICZ, Marta , REZNIK, Yuriy , CHEN, Peisong , CHUANG, Hsiao-Chiang
发明人： JOSHI, Rajan, L. , CHIEN, Wei-Jung , KARCZEWICZ, Marta , REZNIK, Yuriy , CHEN, Peisong , CHUANG, Hsiao-Chiang
IPC分类号： H04N7/26 , H04N7/30 , H04N7/50
CPC分类号： H04N19/42 , H04N19/122 , H04N19/157 , H04N19/176 , H04N19/184 , H04N19/196 , H04N19/46 , H04N19/60 , H04N19/61
摘要： This disclosure describes techniques for mitigating rounding errors in a fixed- point transform associated with video coding by applying a variable localized bit-depth increase at the transform. More specifically, the techniques include selecting a constant value based on a size of a fixed-point transform in a video coding device and applying a variable localized bit-depth increase at the transform with a value equal to the constant value. Applying the variable localized bit-depth increase includes left-shifting a transform input signal by a number of bits equal to the constant value before the fixed- point transform, and right-shifting a transform output signal by a number of bits equal to the constant value after the fixed-point transform. The constant value is selected from a plurality of constant values stored on the video coding device. Each of the constant values is pre-calculated for one of a plurality of different transform sizes supported by the video coding.
摘要翻译：本公开描述了通过在变换处应用可变局部位深增加来减轻与视频编码相关联的定点变换中的舍入误差的技术。更具体地，这些技术包括基于视频编码装置中的定点变换的大小来选择常数值，并且在变换时以等于常数值的值应用可变的局部位深增加。应用可变局部位置深度增加包括将变换输入信号左移到等于定点变换之前的常数值的位数，并且将变换输出信号右移到等于常数的位数定点变换后的值。从存储在视频编码装置上的多个常数值中选择常数值。对于由视频编码支持的多个不同的变换大小之一，预先计算每个常数值。

6. 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。

7. 发明申请

WO2012051000A1 ADAPTIVE MOTION VECTOR RESOLUTION SIGNALING FOR VIDEO CODING 审中-公开
标题翻译：自适应运动矢量分解信号用于视频编码
公开(公告)号：WO2012051000A1
公开(公告)日：2012-04-19
申请号：PCT/US2011/054629
申请日：2011-10-03
申请人： QUALCOMM INCORPORATED , CHIEN, Wei-Jung , CHEN, Peisong , KARCZEWICZ, Marta
发明人： CHIEN, Wei-Jung , CHEN, Peisong , KARCZEWICZ, Marta
IPC分类号： H04N7/26 , H04N7/36 , H04N7/46 , H04N7/50
CPC分类号： H04N19/523 , H04N19/13 , H04N19/139 , H04N19/176 , H04N19/463 , H04N19/91
摘要： A video encoder may be configured to adaptively select a sub-pixel precision for motion vectors used to encode video data. The video encoder may further entropy encode an indication of the sub-pixel precision using context adaptive binary arithmetic coding, where the context may correspond to the size of a block of video data for the motion vector. For example, the size may correspond to the depth of a coding unit, the size of a prediction unit of the coding unit, and/or a type for the prediction unit. The video encoder may also interpolate values for one-sixteenth pixel positions of chrominance data using bilinear interpolation. The video encoder may further encode a motion vector difference value for the motion vector using an encoding scheme corresponding to the sub-pixel precision of the motion vector. A video decoder may use similar, reciprocal techniques for decoding the video data.
摘要翻译：视频编码器可以被配置为自适应地选择用于对视频数据进行编码的运动矢量的子像素精度。视频编码器可以使用上下文自适应二进制算术编码进一步对子像素精度的指示进行熵编码，其中上下文可以对应于用于运动矢量的视频数据块的大小。例如，大小可以对应于编码单元的深度，编码单元的预测单元的大小和/或预测单元的类型。视频编码器也可以使用双线性插值内插色度数据的第十六象素位置的值。视频编码器可以使用与运动矢量的子像素精度相对应的编码方案来进一步编码运动矢量的运动矢量差值。视频解码器可以使用类似的互逆技术来解码视频数据。

8. 发明申请

WO2012015650A8 CODING OF INTER PREDICTION MODES AND OF REFERENCE PICTURE LIST INDEXES FOR VIDEO CODING 审中-公开
公开(公告)号：WO2012015650A8
公开(公告)日：2012-02-02
申请号：PCT/US2011/044732
申请日：2011-07-20
申请人： QUALCOMM INCORPORATED , CHIEN, Wei-Jung , CHEN, Peisong , WANG, Xianglin , KARCZEWICZ, Marta , CHEN, Ying , COBAN, Muhammed, Z.
发明人： CHIEN, Wei-Jung , CHEN, Peisong , WANG, Xianglin , KARCZEWICZ, Marta , CHEN, Ying , COBAN, Muhammed, Z.
IPC分类号： H04N7/26 , H04N7/50 , H04N7/36 , H04N7/46
摘要： This disclosure relates to techniques for reducing a cost of coding prediction information in video coding. Video blocks in a generalized P/B (GPB) frame are encoded using up to two motion vectors calculated from reference pictures in two separate reference picture lists that are identical. When one of the reference picture lists is preferred over the other reference picture list, the preferred reference picture list may be used for unidirectional prediction, by default. When a GPB frame is enabled such that the first and second reference picture lists are identical, either of the first and second reference picture lists may be used for unidirectional prediction. The techniques include coding one or more syntax elements indicating that a video block is coded using one of the unidirectional prediction mode with respect to a reference picture in a reference picture list and the bidirectional prediction mode using less than two bits.

9. 发明申请

WO2012099692A1 MOTION VECTOR PREDICTION 审中-公开
标题翻译：运动矢量预测
公开(公告)号：WO2012099692A1
公开(公告)日：2012-07-26
申请号：PCT/US2011/067547
申请日：2011-12-28
申请人： QUALCOMM INCORPORATED , CHIEN, Wei-Jung , CHEN, Peisong , KARCZEWICZ, Marta
发明人： CHIEN, Wei-Jung , CHEN, Peisong , KARCZEWICZ, Marta
IPC分类号： H04N7/26 , H04N7/50
CPC分类号： H04N19/463 , H04N19/176 , H04N19/196 , H04N19/46 , H04N19/52 , H04N19/61 , H04N19/70
摘要： A method of coding video data includes determining a candidate motion vector for each of one or more candidate portions of a video frame and determining a current motion vector for a current portion of a current frame. The current motion vector identifies a portion of a reference frame that at least partially matches the current portion of the current frame. The method also includes calculating a motion vector difference between the current motion vector and each of the candidate motion vectors, selecting one of the candidate motion vectors based on the calculated motion vector differences, signaling an index identifying the candidate portion having the selected one of the candidate motion vectors, and signaling the corresponding motion vector difference calculated with respect to the selected one of the candidate motion vectors.
摘要翻译：一种编码视频数据的方法包括确定视频帧的一个或多个候选部分中的每一个的候选运动矢量，并确定当前帧的当前部分的当前运动矢量。当前运动矢量标识至少部分地匹配当前帧的当前部分的参考帧的一部分。该方法还包括：计算当前运动矢量与每个候选运动矢量之间的运动矢量差，基于所计算的运动矢量差选择候选运动矢量之一，发信号通知识别候选部分的索引，候选运动矢量，并且发送相对于所选择的一个候选运动矢量计算的对应运动矢量差。

10. 发明申请

WO2012099656A1 COMBINED REFERENCE PICTURE LIST CONSTRUCTION FOR VIDEO CODING 审中-公开
标题翻译：用于视频编码的组合参考图片列表构造
公开(公告)号：WO2012099656A1
公开(公告)日：2012-07-26
申请号：PCT/US2011/064225
申请日：2011-12-09
申请人： QUALCOMM Incorporated , CHEN, Ying , COBAN, Muhammed Zeyd , CHIEN, Wei-Jung , KARCZEWICZ, Marta , CHEN, Peisong
发明人： CHEN, Ying , COBAN, Muhammed Zeyd , CHIEN, Wei-Jung , KARCZEWICZ, Marta , CHEN, Peisong
IPC分类号： H04N7/26 , H04N7/36 , H04N7/46
CPC分类号： H04N19/577 , H04N19/105 , H04N19/147 , H04N19/176 , H04N19/46 , H04N19/56 , H04N19/573 , H04N19/70
摘要： This disclosure relates to techniques for constructing a combined reference picture list, List C, based on List 0 and List 1, used for uni-directional prediction of video blocks in any direction. The techniques include coding one or more syntax elements defined to indicate construction information for List C, and performing reference picture list construction for List C from List 0 and List 1 based on the syntax elements. The one or more syntax elements may indicate that List C is used for uni-directional prediction, and may also indicate a number of reference pictures identified in List C and a reference index of a reference picture for each entry in List C. Each coded video block of a B slice may have an associated syntax element, i.e., inter_pred_idc, to indicate whether the video block is bi-predicted from List 0 and List 1 (Bi) or uni-directional predicted from List C (Pred_LC).
摘要翻译：本公开涉及用于构建基于列表0和列表1的组合参考图片列表C的技术，其用于在任何方向上对视频块进行单向预测。这些技术包括编码一个或多个语法元素，其定义为指示列表C的构造信息，并且基于语法元素从列表0和列表1执行列表C的参考图像列表构造。一个或多个语法元素可以指示列表C用于单向预测，并且还可以指示列表C中标识的参考图片的数量和列表C中的每个条目的参考图片的参考索引。每个编码视频 B片的块可以具有相关联的语法元素，即inter_pred_idc，以指示视频块是从列表0和列表1（Bi）是双向预测的还是从列表C预测的单向（Pred_LC）。

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