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1. 发明申请

WO2011103209A3 CHROMINANCE HIGH PRECISION MOTION FILTERING FOR MOTION INTERPOLATION 审中-公开
标题翻译：用于运动插值的高精度运动滤波
公开(公告)号：WO2011103209A3
公开(公告)日：2012-09-13
申请号：PCT/US2011025122
申请日：2011-02-16
申请人： QUALCOMM INC , JOSHI RAJAN L , CHEN PEISONG , KARCZEWICZ MARTA
发明人： JOSHI RAJAN L , CHEN PEISONG , KARCZEWICZ MARTA
IPC分类号： H04N7/26
CPC分类号： H04N19/523 , H04N19/186 , H04N19/513 , H04N19/61
摘要： A video coding unit may be configured to encode or decode chrominance blocks of video data by reusing motion vectors for corresponding luminance blocks. A motion vector may have greater precision for chrominance blocks than luminance blocks, due to downsampling of chrominance blocks relative to corresponding luminance blocks. The video coding unit may interpolate values for a reference chrominance block by selecting interpolation filters based on the position of the pixel position pointed to by the motion vector. For example, a luminance motion vector may have one-quarter-pixel precision and a chrominance motion vector may have one-eighth-pixel precision. There may be interpolation filters associated with the quarter-pixel precisions. The video coding unit may use interpolation filters either corresponding to the pixel position or neighboring pixel positions to interpolate a value for the pixel position pointed to by the motion vector.
摘要翻译：视频编码单元可以被配置为通过重新使用对应的亮度块的运动矢量来对视频数据的色度块进行编码或解码。由于色度块相对于对应亮度块的下采样，运动矢量可能具有比亮度块更高的色度块精度。视频编码单元可以通过基于由运动矢量指向的像素位置的位置来选择内插滤波器来内插参考色度块的值。例如，亮度运动矢量可以具有四分之一像素精度，并且色度运动矢量可以具有八分之一像素的精度。可以存在与四分之一像素精度相关联的内插滤波器。视频编码单元可以使用对应于像素位置或相邻像素位置的插值滤波器来内插由运动矢量指向的像素位置的值。

2. 发明申请

WO2012075181A1 SEPARATELY CODING THE POSITION OF A LAST SIGNIFICANT COEFFICIENT OF A VIDEO BLOCK IN VIDEO CODING 审中-公开
标题翻译：在视频编码中单独编码视频块的最新重要系数的位置
公开(公告)号：WO2012075181A1
公开(公告)日：2012-06-07
申请号：PCT/US2011/062700
申请日：2011-11-30
申请人： QUALCOMM INCORPORATED , SOLE ROJALS, Joel , JOSHI, Rajan L. , KARCZEWICZ, Marta
发明人： SOLE ROJALS, Joel , JOSHI, Rajan L. , KARCZEWICZ, Marta
IPC分类号： H04N7/26 , H04N7/30 , H04N7/50 , H03M7/40
CPC分类号： H04N19/00157 , H03M7/4018 , H03M7/4075 , H03M7/6035 , H04N19/129 , H04N19/13 , H04N19/14 , H04N19/176 , H04N19/18 , H04N19/436 , H04N19/61 , H04N19/70
摘要： An apparatus is disclosed for coding coefficients associated with a block of video data during a video coding process, wherein the apparatus includes a video coder configured to code information that identifies a position of a last nonzero coefficient within the block according to a scanning order associated with the block prior to coding information that identifies positions of other nonzero coefficients within the block, including at least one of the following: coding a one-dimensional position within the block that identifies the position of the last nonzero coefficient; coding a two-dimensional position within the block that identifies the position of the last nonzero coefficient, and coding a flag that indicates whether the last nonzero coefficient is located within a range of positions within the block, and coding the one-dimensional position when the last nonzero coefficient is located within the range, and otherwise coding the two-dimensional position.
摘要翻译：公开了一种用于在视频编码过程期间对与视频数据块相关联的系数进行编码的装置，其中该装置包括视频编码器，其被配置为根据与该数据块相关联的扫描顺序来识别块内最后一个非零系数的位置的信息编码信息之前的块，其识别所述块内的其他非零系数的位置，包括以下中的至少一个：对所述块内的一维位置进行编码，所述一维位置标识所述最后非零系数的位置; 编码所述块内的二维位置，其识别所述最后非零系数的位置，以及编码指示所述最后非零系数是否位于所述块内的位置范围内的标志，以及当所述一维位置在最后一个非零系数位于该范围内，否则编码二维位置。

3. 发明申请

WO2012074772A1 VIDEO CODING USING FUNCTION-BASED SCAN ORDER FOR TRANSFORM COEFFICIENTS 审中-公开
标题翻译：使用基于功能的扫描序列进行变换系统的视频编码
公开(公告)号：WO2012074772A1
公开(公告)日：2012-06-07
申请号：PCT/US2011/061222
申请日：2011-11-17
申请人： QUALCOMM INCORPORATED , WANG, Xianglin , JOSHI, Rajan, L. , COBAN, Muhammed, Zeyd , KARCZEWICZ, Marta
发明人： WANG, Xianglin , JOSHI, Rajan, L. , COBAN, Muhammed, Zeyd , KARCZEWICZ, Marta
IPC分类号： H04N7/26
CPC分类号： H04N19/14 , H04N19/129 , H04N19/176 , H04N19/196 , H04N19/197
摘要： Video coding devices and methods use a function-based definition of scan order to scan transform coefficients associated with a block of residual video data. A video coder may define a scan order for coefficients based on a predefined function and one or more parameter values. A video encoder may use a function-based scan order to scan a two-dimensional array of coefficients to produce a one-dimensional array of coefficients for use in producing encoded video data. The video encoder may signal the parameters to a video decoder, or the video decoder may infer one or more of the parameters. The video decoder may use the function-based scan order to scan a one-dimensional array of coefficients to reproduce the two-dimensional array of coefficients for use in producing decoded video data. In each case, the scan order may vary according to the parameter values, which may include block size, orientation, and/or orientation strength.
摘要翻译：视频编码设备和方法使用扫描顺序的基于功能的定义来扫描与一组残留视频数据相关联的变换系数。视频编码器可以基于预定义的功能和一个或多个参数值来定义系数的扫描顺序。视频编码器可以使用基于功能的扫描顺序来扫描系数的二维阵列以产生用于产生编码视频数据的一维系数阵列。视频编码器可以将参数发送给视频解码器，或者视频解码器可以推断一个或多个参数。视频解码器可以使用基于功能的扫描顺序来扫描系数的一维阵列，以再现用于产生解码视频数据的二维系数阵列。在每种情况下，扫描顺序可以根据可能包括块大小，取向和/或取向强度的参数值而变化。

4. 发明申请

WO2012045041A1 ENTROPY CODING COEFFICIENTS USING A JOINT CONTEXT MODEL 审中-公开
标题翻译：使用联合语境模型进行熵编码系统
公开(公告)号：WO2012045041A1
公开(公告)日：2012-04-05
申请号：PCT/US2011/054425
申请日：2011-09-30
申请人： QUALCOMM INCORPORATED , SOLE ROJALS, Joel , JOSHI, Rajan, L. , KARCZEWICZ, Marta
发明人： SOLE ROJALS, Joel , JOSHI, Rajan, L. , KARCZEWICZ, Marta
IPC分类号： H04N7/26 , H04N7/50
CPC分类号： H04N19/13 , H04N19/132 , H04N19/14 , H04N19/146 , H04N19/149 , H04N19/176 , H04N19/18 , H04N19/60 , H04N19/625 , H04N19/64 , H04N19/91
摘要： This disclosure describes techniques for performing entropy encoding and decoding of video coefficients using a joint context model shared between transform units having different sizes. For example, the joint context model may be shared between transform units having a first size of 32x32 and transform units having a second size of 16x16. Performing entropy coding using a joint context model shared between transform units having different sizes may reduce an amount of memory necessary to store contexts and probabilities, and reduce computational costs of maintaining context models. In one example, the joint context model may be shared between transform units having the first size with coefficients zeroed out to generate a retained coefficient block having the second size and transform units having the second size. In another example, the joint context model may be shared between transform units having the first size and transform units having the second size.
摘要翻译：本公开描述了使用在具有不同大小的变换单元之间共享的联合上下文模型来执行视频系数的熵编码和解码的技术。例如，联合上下文模型可以在第一大小为32×32的变换单元和第二大小为16×16的变换单元之间共享。使用具有不同大小的变换单元之间共享的联合上下文模型执行熵编码可以减少存储上下文和概率所需的存储量，并且减少维护上下文模型的计算成本。在一个示例中，联合上下文模型可以在具有第一大小的变换单元之间共享以产生具有第二尺寸的保留系数块和具有第二尺寸的变换单元。在另一示例中，联合上下文模型可以在具有第一尺寸的变换单元和具有第二尺寸的变换单元之间共享。

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

WO2012006568A1 VIDEO CODING USING A SUBSET OF INTRA PREDICTION MODES AND CORRESPONDING DIRECTIONAL TRANSFORMS 审中-公开
标题翻译：使用内部预测模式和对应方向转换的视频编码
公开(公告)号：WO2012006568A1
公开(公告)日：2012-01-12
申请号：PCT/US2011/043422
申请日：2011-07-08
申请人： QUALCOMM INCORPORATED , KARCZEWICZ, Marta , COBAN, Muhammed, Z. , CHEN, Peisong , CHUANG, Hsiao-Chiang , JOSHI, Rajan, L.
发明人： KARCZEWICZ, Marta , COBAN, Muhammed, Z. , CHEN, Peisong , CHUANG, Hsiao-Chiang , JOSHI, Rajan, L.
IPC分类号： H04N7/26 , H04N7/34 , H04N7/50 , H04N7/30
CPC分类号： H04N19/61 , H04N19/11 , H04N19/122 , H04N19/129 , H04N19/13 , H04N19/132 , H04N19/14 , H04N19/157 , H04N19/159 , H04N19/176 , H04N19/194 , H04N19/196 , H04N19/46 , H04N19/593 , H04N19/60 , H04N19/85 , H04N19/96
摘要： In one example, an apparatus for encoding video data includes a video encoder configured to calculate a residual block for a block of video data based on a predicted block formed using an intra-prediction mode, and transform the residual block using a transform mapped from the intra-prediction mode. In another example, an apparatus includes video encoder configured to receive an indication of a first intra-prediction mode in a first set of intra-prediction modes for a block of video data, determine a second intra-prediction mode from a second set of intra-prediction modes, smaller than the first set of intra-prediction modes, to which the first intra-prediction mode is mapped, determine a directional transform to which the second intra-prediction mode is mapped, and apply the directional transform to residual data of the block.
摘要翻译：在一个示例中，用于编码视频数据的装置包括：视频编码器，被配置为基于使用帧内预测模式形成的预测块来计算视频数据块的残差块，并且使用从帧内预测模式。在另一示例中，一种装置包括视频编码器，其被配置为在视频数据块的第一组帧内预测模式中接收第一帧内预测模式的指示，从第二组帧内预测模式中确定第二帧内预测模式小于第一帧内预测模式映射的第一组帧内预测模式的预测模式确定映射了第二帧内预测模式的方向变换，并将定向变换应用于块。

7. 发明申请

WO2011005573A2 8-POINT TRANSFORM FOR MEDIA DATA CODING 审中-公开
标题翻译：用于媒体数据编码的8点变换
公开(公告)号：WO2011005573A2
公开(公告)日：2011-01-13
申请号：PCT/US2010/039660
申请日：2010-06-23
申请人： QUALCOMM Incorporated , REZNIK, Yuriy , JOSHI, Rajan, L. , KARCZEWICZ, Marta
发明人： REZNIK, Yuriy , JOSHI, Rajan, L. , KARCZEWICZ, Marta
IPC分类号： G06F17/14
CPC分类号： H04N19/00812 , G06F17/147 , H04N19/42 , H04N19/45 , H04N19/61 , H04N19/625
摘要： In general, techniques are described for implementing an 8-point discrete cosine transform (DCT). An apparatus comprising an 8-point discrete cosine transform (DCT) hardware unit may implement these techniques to transform media data from a spatial domain to a frequency domain. The 8-point DCT hardware unit includes an even portion comprising factors A, B that are related to a first scaled factor (μ) in accordance with a first relationship. The 8-point DCT hardware unit also includes an odd portion comprising third, fourth, fifth and sixth internal factors (G, D, E, Z) that are related to a second scaled factor (η) in accordance with a second relationship. The first relationship relates the first scaled factor to the first and second internal factors. The second relationship relates the second scaled factor to the third internal factor and a fourth internal factor, as well as, the fifth internal factor and a sixth internal factor.
摘要翻译：通常，描述了用于实现8点离散余弦变换（DCT）的技术。包括8点离散余弦变换（DCT）硬件单元的装置可以实施这些技术以将媒体数据从空间域转换到频域。 8点DCT硬件单元包括与根据第一关系的第一缩放因子（μ）相关的因子A，B的偶数部分。 8点DCT硬件单元还包括与根据第二关系的第二比例因子（α）相关的第三，第四，第五和第六内部因素（G，D，E，Z）的奇数部分。第一个关系将第一个缩放因子与第一个和第二个内部因素相关联。第二个关系将第二个缩放因子与第三个内在因素和第四个内在因素以及第五个内在因素和第六个内在因素联系起来。

8. 发明申请

WO2011005572A2 8-POINT TRANSFORM FOR MEDIA DATA CODING 审中-公开
标题翻译：用于媒体数据编码的8点变换
公开(公告)号：WO2011005572A2
公开(公告)日：2011-01-13
申请号：PCT/US2010/039657
申请日：2010-06-23
申请人： QUALCOMM Incorporated , REZNIK, Yuriy , JOSHI, Rajan L. , KARCZEWICZ, Marta
发明人： REZNIK, Yuriy , JOSHI, Rajan L. , KARCZEWICZ, Marta
IPC分类号： G06F17/14
CPC分类号： H04N19/625 , G06F17/147 , H04N19/60
摘要： In general, techniques are described for implementing an 8-point inverse discrete cosine transform (IDCT). An apparatus comprising an 8-point inverse discrete cosine transform (IDCT) hardware unit may implement these techniques to transform media data from a frequency domain to a spatial domain. The 8-point IDCT hardware unit includes an even portion comprising factors A, B that are related to a first scaled factor (μ) in accordance with a first relationship. The 8-point IDCT hardware unit also includes an odd portion comprising third, fourth, fifth and sixth internal factors (G, D, E, Z) that are related to a second scaled factor (η) in accordance with a second relationship. The first relationship relates the first scaled factor to the first and second internal factors. The second relationship relates the second scaled factor to the third, fourth, fifth and sixth internal factors.
摘要翻译：通常，描述了用于实现8点逆离散余弦变换（IDCT）的技术。包括8点逆离散余弦变换（IDCT）硬件单元的装置可以实现这些技术以将媒体数据从频域转换为空间域。 8点IDCT硬件单元包括与根据第一关系的第一缩放因子（μ）相关的因子A，B的偶数部分。 8点IDCT硬件单元还包括与根据第二关系的第二缩放因子（α）相关的第三，第四，第五和第六内部因素（G，D，E，Z）的奇数部分。第一个关系将第一个缩放因子与第一个和第二个内部因素相关联。第二个关系将第二个比例因素与第三个，第四个，第五个和第六个内部因素相关联。

9. 发明申请

WO2010098737A1 MESSAGE PASSING INTERFACE (MPI) FRAMEWORK FOR INCREASING EXECUTION SPEED 审中-公开
标题翻译：消息传递接口（MPI）框架，用于增加执行速度
公开(公告)号：WO2010098737A1
公开(公告)日：2010-09-02
申请号：PCT/US2009/001276
申请日：2009-02-27
申请人： THOMSON LICENSING , JOSHI, Rajan L. , ZHANG, Dong-Qing , BISEN, Anand Singh
发明人： JOSHI, Rajan L. , ZHANG, Dong-Qing , BISEN, Anand Singh
IPC分类号： H04N7/26 , G06T9/00 , G06F9/46 , H04L29/08
CPC分类号： H04N19/439 , H04N19/124 , H04N19/147 , H04N19/152 , H04N19/154 , H04N19/162 , H04N19/172 , H04N19/436 , H04N19/59 , H04N19/60
摘要： A system and method for processing video uses a message protocol to communicate between computing units. An image request message (305) is sent to an administrator process of a master node from at least one slave process to request an image to process. Responsive to the request message, an image name message (309) is sent to a requesting slave process from the administrator process to retrieve the image from a queue. The image associated with the image name is processed (328). Images to process are requested (312) until a completion message is received from the administrator process.
摘要翻译：用于处理视频的系统和方法使用消息协议在计算单元之间进行通信。图像请求消息（305）从至少一个从属进程发送到主节点的管理员进程，以请求图像处理。响应于请求消息，图像名称消息（309）从管理员进程发送到请求从属进程以从队列中检索图像。处理与图像名称相关联的图像（328）。请求处理的图像（312），直到从管理员进程收到完成消息。

10. 发明申请

WO2012009566A3 ENTROPY CODING OF BINS ACROSS BIN GROUPS USING VARIABLE LENGTH CODEWORDS 审中-公开
标题翻译：使用可变长度编码器对BIN组进行熵编码
公开(公告)号：WO2012009566A3
公开(公告)日：2013-03-28
申请号：PCT/US2011044060
申请日：2011-07-14
申请人： QUALCOMM INC , KARCZEWICZ MARTA , JOSHI RAJAN L
发明人： KARCZEWICZ MARTA , JOSHI RAJAN L
IPC分类号： H04N7/26
CPC分类号： H03M7/40 , H04N19/13
摘要： This disclosure describes techniques for entropy coding bins representing video data symbols with reduced bottlenecks in the entropy coding process. The techniques of this disclosure enable an entropy coding device to perform entropy coding of bins grouped into bin subsets from across different bin groups, e.g., context groups or probability groups, using variable length codewords. In one example, the bins may be assigned to context groups with no context dependencies between the context groups. In another example, the bins may be assigned to probability groups associated with different intervals of probability states. The bins may be grouped into the bin subsets according to determined formations of the bin subsets. In this way, the entropy coding device may reduce an amount of bin and codeword buffering by efficiently forming the bin subsets and designing variable length codewords for each of the bin subsets.
摘要翻译：本公开描述了用于熵编码表示具有熵编码处理中的瓶颈的视频数据符号的盒的技术。本公开的技术使得熵编码设备能够使用可变长度码字来对来自跨不同的存储体组（例如，上下文组或概率组）的bin子集进行熵编码。在一个示例中，可以将这些分配给上下文组，而上下文组之间没有上下文依赖性。在另一个示例中，可以将该箱分配给与不同的概率状态间隔相关联的概率组。根据箱子子集的确定的形式，箱可以被分组到箱子子集中。以这种方式，熵编码装置可以通过有效地形成bin子集并且为每个bin子集设计可变长度码字来减少bin和码字缓冲量。

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