专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

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

WO2011130186A3 FIXED POINT IMPLEMENTATION FOR GEOMETRIC MOTION PARTITIONING 审中-公开
标题翻译：用于几何运动分配的固定点实现
公开(公告)号：WO2011130186A3
公开(公告)日：2012-03-08
申请号：PCT/US2011031997
申请日：2011-04-11
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 , H04N7/32 , H04N7/36
CPC分类号： H04N19/119 , H04N19/122 , H04N19/137 , H04N19/17 , H04N19/176 , H04N19/46 , H04N19/52 , H04N19/523 , H04N19/543 , H04N19/61 , H04N19/80
摘要： In one example, an apparatus includes a video encoder configured to partition a block of video data into a first partition and a second partition using a geometric motion partition line, calculate a slope value and a y-intercept value of the geometric motion partition line, wherein the slope value and the y-intercept value comprise integer values, calculate a mask indicative of pixels of the block in the first partition and pixels of the block in the second partition, encode the first partition and the second partition based on the mask, and output the encoded first partition, the encoded second partition, the slope value, and the y-intercept value. This may allow for a fixed point implementation. A video decoder may receive the slope and y-intercept values to calculate the mask and decode the block based on the mask.
摘要翻译：在一个示例中，一种装置包括视频编码器，其被配置为使用几何运动分割线将视频数据块划分为第一分区和第二分区，计算几何运动分割线的斜率值和y截距值，其中所述斜率值和所述y截距值包括整数值，计算指示所述第一分区中的块的像素的掩模和所述第二分区中的块的像素，基于所述掩码对所述第一分区和所述第二分区进行编码，并输出编码的第一分区，编码的第二分区，斜率值和y截距值。这可能允许固定点实现。视频解码器可以接收斜率和y截距值以计算掩码并基于掩码解码块。

3. 发明申请

WO2012006576A3 CODING SYNTAX ELEMENTS FOR ADAPTIVE SCANS OF TRANSFORM COEFFICIENTS FOR VIDEO CODING 审中-公开
标题翻译：用于视频编码的自适应扫描系统的编码语音元素
公开(公告)号：WO2012006576A3
公开(公告)日：2012-03-15
申请号：PCT/US2011043437
申请日：2011-07-08
申请人： QUALCOMM INC , 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 , H04N7/30 , H04N7/34 , H04N7/50
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 scan a two-dimensional block of transform coefficients to produce a one- dimensional vector of the transform coefficients, determine values indicative of whether the transform coefficients in the one-dimensional vector are significant; and entropy encode at least one of the values using a context model selected based on at least a percentage of significant coefficients in a predetermined number of the values encoded before the at least one of the values.
摘要翻译：在一个示例中，用于对视频数据进行编码的装置包括视频编码器，被配置为扫描变换系数的二维块以产生变换系数的一维向量，确定指示一维中的变换系数载体是重要的; 并且使用基于在所述至少一个值之前编码的预定数量的值中的至少一个百分比的有效系数来选择的上下文模型来熵编码所述值中的至少一个。

4. 发明申请

WO2012006574A2 SIGNALING SELECTED DIRECTIONAL TRANSFORM FOR VIDEO CODING 审中-公开
标题翻译：用于视频编码的信号选择方向转换
公开(公告)号：WO2012006574A2
公开(公告)日：2012-01-12
申请号：PCT/US2011043434
申请日：2011-07-08
申请人： QUALCOMM INC , 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： H04N7/32
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 select an intra-prediction mode to use to encode a block of video data, determine whether the block includes a sub-block of a size for which multiple transforms are possible based on the size of the sub-block and the selected intra- prediction mode, when the block includes the sub-block of the size for which multiple transforms are possible based on the size of the sub -block and the selected intra- prediction mode, select one of the multiple possible transforms, transform the sub-block using the selected one of the multiple possible transforms, and provide an indication of the selected one of the multiple possible transforms for the size of the block.
摘要翻译：在一个示例中，用于对视频数据进行编码的装置包括：视频编码器，被配置为选择帧内预测模式以用于对视频数据块进行编码，确定该块是否包括可能进行多次转换的大小的子块基于子块的大小和所选择的帧内预测模式，当该块包括基于子块的大小和所选择的帧内预测模式的可能的多个变换的大小的子块时，选择多个可能变换之一，使用所选择的多个可能变换之一来变换子块，并且针对块的大小提供所选择的多个可能变换之一的指示。

5. 发明申请

WO2011005572A3 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：WO2011005572A3
公开(公告)日：2012-05-31
申请号：PCT/US2010039657
申请日：2010-06-23
申请人： QUALCOMM INC , REZNIK YURIY , JOSHI RAJAN L , KARCZEWICZ MARTA
发明人： REZNIK YURIY , JOSHI RAJAN L , KARCZEWICZ MARTA
IPC分类号： G06F17/14 , H04N7/26
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 (?) 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）硬件单元的装置可实施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联系起来。

6. 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。

7. 发明申请

WO2011005578A2 16-POINT TRANSFORM FOR MEDIA DATA CODING 审中-公开
标题翻译：用于媒体数据编码的16点变换
公开(公告)号：WO2011005578A2
公开(公告)日：2011-01-13
申请号：PCT/US2010039676
申请日：2010-06-23
申请人： QUALCOMM INC , 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： G06F17/147 , H04N19/42 , H04N19/61 , H04N19/625
摘要： In general, techniques are described for implementing a 16-point inverse discrete cosine transform (IDCT) that is capable of applying multiple IDCTs of different sizes. For example, an apparatus comprising a 16-point inverse discrete cosine transform of type II (IDCT-II) unit may implement these techniques. The 16-point IDCT-II unit performs these IDCTs-II of different sizes to transform data from a spatial to a frequency domain. The 16-point IDCT-II unit includes an 8-point IDCT-II unit that performs one of the IDCTs-II of size 8 and a first 4-point IDCT-II unit that performs one of the IDCTs-II of size 4. The 8-point IDCT-II unit includes the first 4-point DCT-II unit. The 16-point IDCT-II unit also comprises an inverse 8-point DCT-IV unit that includes a second 4-point IDCT-II unit and a third 4-point IDCT-II unit. Each of the second and third 4-point IDCT-II units performs one of the IDCTs-II of size 4.
摘要翻译：一般来说，描述了实现能够应用不同大小的多个IDCT的16点离散余弦变换（IDCT）的技术。例如，包括II型（IDCT-II）单元的16点离散余弦变换的装置可以实现这些技术。 16点IDCT-II单元执行不同尺寸的这些IDCT-II以将数据从空间变换到频域。 16点IDCT-II单元包括执行尺寸为8的IDCT-II之一的8点IDCT-II单元和执行尺寸为4的IDCT-II之一的第一个4点IDCT-II单元。 8点IDCT-II单元包括第一个4点DCT-II单元。 16点IDCT-II单元还包括具有第二4点IDCT-II单元和第三个4点IDCT-II单元的逆8点DCT-IV单元。第二和第三4点IDCT-II单元中的每一个执行大小为4的IDCT-II之一。

8. 发明申请

WO2011005573A3 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：WO2011005573A3
公开(公告)日：2012-07-12
申请号：PCT/US2010039660
申请日：2010-06-23
申请人： QUALCOMM INC , REZNIK YURIY , JOSHI RAJAN L , KARCZEWICZ MARTA
发明人： REZNIK YURIY , JOSHI RAJAN L , KARCZEWICZ MARTA
IPC分类号： H04N7/26 , 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 (?) 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。

9. 发明申请

WO2012045037A3 ZERO-OUT OF HIGH FREQUENCY COEFFICIENTS AND ENTROPY CODING RETAINED COEFFICIENTS USING A JOINT CONTEXT MODEL 审中-公开
标题翻译：高频系数零OUT和熵编码未分配利润系数使用联合上下文模型
公开(公告)号：WO2012045037A3
公开(公告)日：2012-05-18
申请号：PCT/US2011054418
申请日：2011-09-30
申请人： QUALCOMM INC , 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：本发明描述用于使用在具有不同尺寸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，联合上下文模型可具有16×16的第二大小的变换具有32×32的第一尺寸单元和变换单元之间共享。执行熵使用联合上下文模型之间共享变换具有不同尺寸的可降低的必要存储上下文和概率的存储器的量，并减少维护的上下文模型的计算成本单位进行编码。在一个示例中，联合上下文模型可具有第一尺寸具有系数置零，以产生具有所述第二尺寸的保留系数块和变换具有第二大小为单位变换单元之间共享。在另一个示例中，联合上下文模型可以在具有第一大小的变换单元和具有第二大小的变换单元之间共享。

10. 发明申请

WO2012122284A1 CODING OF TRANSFORM COEFFICIENTS FOR VIDEO CODING 审中-公开
标题翻译：视频编码转换系数的编码
公开(公告)号：WO2012122284A1
公开(公告)日：2012-09-13
申请号：PCT/US2012028093
申请日：2012-03-07
申请人： QUALCOMM INC , 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
CPC分类号： H04N19/129 , H04N19/00109 , H04N19/13 , H04N19/136 , H04N19/167 , H04N19/176 , H04N19/18 , H04N19/196 , H04N19/436 , H04N19/463 , H04N19/60 , H04N19/61 , H04N19/619 , H04N19/70 , H04N19/91
摘要： This disclosure describes techniques for coding transform coefficients associated with a block of residual video data in a video coding process. Aspects of this disclosure include the selection of a scan order for both significance map coding and level coding, as well as the selection of contexts for entropy coding consistent with the selected scan order. This disclosure proposes a harmonization of the scan order to code both the significance map of the transform coefficients as well as to code the levels of the transform coefficient. It is proposed that the scan order for the significance map should be in the inverse direction (i.e., from the higher frequencies to the lower frequencies). This disclosure also proposes that transform coefficients be scanned in subsets as opposed to fixed subblocks. In particular, transform coefficients are scanned in a subset consisting of a number of consecutive coefficients according to the scan order.
摘要翻译：本发明描述用于译码视频译码过程中与残余视频数据块相关联的变换系数的技术。本公开的各方面包括选择用于重要图编码和等级编码两者的扫描顺序，以及用于与所选择的扫描顺序一致的用于熵编码的上下文的选择。本公开提出了协调扫描顺序以编码变换系数的重要图以及编码变换系数的电平。建议重要图的扫描顺序应该是反方向的（即从较高频率到较低频率）。本公开内容还提出，与固定子块相对，在子集中扫描变换系数。具体而言，根据扫描顺序在由多个连续系数组成的子集中扫描变换系数。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式