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21. 发明授权

US08638852B2 Video coding of filter coefficients based on horizontal and vertical symmetry 有权
标题翻译：基于水平和垂直对称的滤波器系数的视频编码
公开(公告)号：US08638852B2
公开(公告)日：2014-01-28
申请号：US12348752
申请日：2009-01-05
申请人： Marta Karczewicz , Yan Ye
发明人： Marta Karczewicz , Yan Ye
IPC分类号： H04N11/02
CPC分类号： H04N19/86 , H04N19/117 , H04N19/134 , H04N19/169 , H04N19/176 , H04N19/46 , H04N19/61 , H04N19/82
摘要： This disclosure recognizes and exploits the fact that some of the filter coefficients defined at the encoder may possess symmetry relative to other filter coefficients. Accordingly, this disclosure describes techniques in which a first set of the filter coefficients are used to predictively encode a second set of the filter coefficients, thereby exploiting any symmetry between filter coefficients. Rather than communicate all of the filter coefficients to the decoding device, the encoding device may communicate the first set of filter coefficients and difference values associated with the second set of filter coefficients. Using this information, the decoder may be able to reconstruct all of the filter coefficients. In some cases, if exact symmetry is imposed, the need to send the difference values may be eliminated and the decoder may be able to derive the second set of filter coefficients from the first set of filter coefficients.
摘要翻译：本公开识别和利用了在编码器处定义的一些滤波器系数相对于其它滤波器系数可能具有对称性的事实。因此，本公开描述了其中使用第一组滤波器系数来预测性地编码第二组滤波器系数的技术，从而利用滤波器系数之间的任何对称性。编码设备不是将所有的滤波器系数传送到解码设备，而是可以传送与第二组滤波器系数相关联的第一组滤波器系数和差值。使用该信息，解码器可以能够重构所有的滤波器系数。在一些情况下，如果施加精确的对称性，则可以消除发送差值的需要，并且解码器可以能够从第一组滤波器系数导出第二组滤波器系数。

22. 发明申请

US20100086049A1 VIDEO CODING USING TRANSFORMS BIGGER THAN 4X4 AND 8X8 有权
标题翻译：使用4X4和8X8转换器进行视频编码
公开(公告)号：US20100086049A1
公开(公告)日：2010-04-08
申请号：US12508434
申请日：2009-07-23
申请人： Yan Ye , Peisong Chen , Marta Karczewicz
发明人： Yan Ye , Peisong Chen , Marta Karczewicz
IPC分类号： H04N7/26
CPC分类号： H04N19/44 , H04N19/122 , H04N19/132 , H04N19/176 , H04N19/46 , H04N19/60 , H04N19/61 , H04N19/70
摘要： In a video processing system, a method and system for applying transforms larger than 8×8 and non-rectangular transforms, and generating transform size syntax elements indicative of the transforms for video decoding are provided. The transform size syntax element may be generated by an encoder based on a prediction block size of a video block and the contents of the video block. Further, the transform size syntax element may be generated according to a set of rules to select from 4×4, 8×8, and larger transform sizes during an encoding process. A decoder may perform an inverse transform based on the transform size syntax element and the rules used by the encoder. The transform size syntax element may be transmitted to the decoder as part of the encoded video bitstream.
摘要翻译：在视频处理系统中，提供了一种用于应用大于8×8和非矩形变换的变换以及生成表示用于视频解码的变换的变换大小语法元素的方法和系统。转换大小语法元素可以由编码器基于视频块的预测块大小和视频块的内容来生成。此外，可以根据一组规则来生成变换大小语法元素，以在编码处理期间从4×4,8×8和更大的变换大小进行选择。解码器可以基于变换大小语法元素和编码器使用的规则执行逆变换。变换大小语法元素可以作为编码视频比特流的一部分被发送到解码器。

23. 发明申请

US20090257503A1 ADVANCED INTERPOLATION TECHNIQUES FOR MOTION COMPENSATION IN VIDEO CODING 有权
公开(公告)号：US20090257503A1
公开(公告)日：2009-10-15
申请号：US12420256
申请日：2009-04-08
申请人： Yan Ye , Peisong Chen , Marta Karczewicz
发明人： Yan Ye , Peisong Chen , Marta Karczewicz
IPC分类号： H04N7/32 , H04N7/26
CPC分类号： H04N19/00139 , H04N19/117 , H04N19/136 , H04N19/147 , H04N19/182 , H04N19/192 , H04N19/523 , H04N19/82
摘要： This disclosure describes various interpolation techniques performed by an encoder and a decoder during the motion compensation process of video coding. In one example, an encoder interpolates pixel values of reference video data based on a plurality of different pre-defined interpolation filters. In this example, the decoder receives a syntax element that identifies an interpolation filter, and interpolates pixel values of reference video data based on the interpolation filter identified by the syntax element. In another example, a method of interpolating predictive video data includes generating half-pixel values based on integer pixel values, rounding the half-pixel values to generate half-pixel interpolated values, storing the half-pixel values as non-rounded versions of the half-pixel values, and generating quarter-pixel values based on the non-rounded versions of the half-pixel values and the integer pixel values.

24. 发明申请

US20090257500A1 OFFSETS AT SUB-PIXEL RESOLUTION 有权
标题翻译：子像素分辨率偏移
公开(公告)号：US20090257500A1
公开(公告)日：2009-10-15
申请号：US12420280
申请日：2009-04-08
申请人： Marta Karczewicz , Yan Ye
发明人： Marta Karczewicz , Yan Ye
IPC分类号： H04N7/36 , H04N7/32
CPC分类号： H04N19/00739 , H04N19/117 , H04N19/147 , H04N19/176 , H04N19/182 , H04N19/192 , H04N19/523 , H04N19/61 , H04N19/80 , H04N19/82
摘要： This disclosure describes techniques applied during video encoding and decoding processes. In one example, a method of encoding video data comprises calculating a plurality of offset values for a coded unit of the video data, wherein the offset values are associated with a plurality of different integer and sub-integer pixel locations, applying the offset values to predictive video blocks to generate offset predictive video blocks, and encoding video blocks of the coded unit based on the offset predictive video blocks. In another example, a method of decoding video data comprises receiving a plurality of offset values for a coded unit of the video data, wherein the offset values are associated with a plurality of different integer and sub-integer pixel locations, applying the offset values to predictive video blocks to generate offset predictive video blocks, and decoding video blocks of the coded unit based on the offset predictive video blocks.
摘要翻译：本公开描述了在视频编码和解码过程中应用的技术。在一个示例中，视频数据的编码方法包括：计算视频数据的编码单位的多个偏移值，其中偏移值与多个不同的整数和子整数像素位置相关联，将偏移值应用于预测视频块以产生偏移预测视频块，以及基于偏移预测视频块对编码单元的视频块进行编码。在另一示例中，解码视频数据的方法包括接收视频数据的经译码单元的多个偏移值，其中偏移值与多个不同的整数和子整数像素位置相关联，将偏移值应用于用于生成偏移预测视频块的预测视频块，以及基于偏移预测视频块来对经译码单元的视频块进行解码。

25. 发明申请

US20080310507A1 ADAPTIVE CODING OF VIDEO BLOCK PREDICTION MODE 有权
标题翻译：视频块预测模式的自适应编码
公开(公告)号：US20080310507A1
公开(公告)日：2008-12-18
申请号：US12133227
申请日：2008-06-04
申请人： Yan Ye , Marta Karczewicz
发明人： Yan Ye , Marta Karczewicz
IPC分类号： H04N7/50
CPC分类号： H04N19/625 , H04N19/103 , H04N19/11 , H04N19/12 , H04N19/122 , H04N19/129 , H04N19/13 , H04N19/147 , H04N19/157 , H04N19/176 , H04N19/18 , H04N19/19 , H04N19/196 , H04N19/197 , H04N19/42 , H04N19/46 , H04N19/463 , H04N19/48 , H04N19/593 , H04N19/61 , H04N19/70
摘要： This disclosure describes techniques for coding of header information of video blocks. In particular, the techniques of this disclosure select one of a plurality of prediction modes for use in generating a prediction block of a video block of a coding unit, the plurality of prediction modes including unidirectional prediction modes and multi-directional prediction modes that combine at least two unidirectional prediction modes. An encoding device encodes the prediction mode of the current video block based on prediction modes of one or more previously encoded video blocks of the coding unit. Likewise, a decoding unit receives encoded video data of a video block of a coding unit and decodes the encoded video data to identify one of a plurality of prediction modes for use in generating a prediction block of the video block based on prediction modes of one or more previously decoded video blocks of the coding unit.
摘要翻译：本公开描述了用于编码视频块的头信息的技术。特别地，本公开的技术选择用于生成编码单元的视频块的预测块的多种预测模式之一，所述多种预测模式包括单向预测模式和多方向预测模式，其组合在最少两个单向预测模式。编码装置基于编码单位的一个以上的先前编码的视频块的预测模式对当前视频块的预测模式进行编码。类似地，解码单元接收编码单元的视频块的编码视频数据，并且对编码视频数据进行解码，以基于一个或多个预测模式的预测模式来识别用于生成视频块的预测块的多个预测模式之一编码单元的更先前解码的视频块。

26. 发明授权

US09161057B2 Non-zero rounding and prediction mode selection techniques in video encoding 有权
标题翻译：视频编码中的非零舍入和预测模式选择技术
公开(公告)号：US09161057B2
公开(公告)日：2015-10-13
申请号：US12499990
申请日：2009-07-09
申请人： Marta Karczewicz , Peisong Chen , Yan Ye
发明人： Marta Karczewicz , Peisong Chen , Yan Ye
IPC分类号： H04N7/12 , H04N11/02 , H04N11/04 , H04N19/577 , H04N19/105 , H04N19/147 , H04N19/46 , H04N19/61 , H04N19/573
CPC分类号： H04N19/577 , H04N19/105 , H04N19/124 , H04N19/147 , H04N19/176 , H04N19/44 , H04N19/46 , H04N19/573 , H04N19/61 , H04N19/91
摘要： In one aspect of this disclosure, rounding adjustments to bi-directional predictive data may be purposely eliminated to provide predictive data that lacks any rounding bias. In this case, rounded and unrounded predictive data may both be considered in a rate-distortion analysis to identify the best data for prediction of a given video block. In another aspect of this disclosure, techniques are described for selecting among default weighted prediction, implicit weighted prediction, and explicit weighted prediction. In this context, techniques are also described for adding offset to prediction data, e.g., using the format of explicit weighted prediction to allow for offsets to predictive data that is otherwise determined by implicit or default weighted prediction.
摘要翻译：在本公开的一个方面，可以有意地消除对双向预测数据的舍入调整，以提供缺少任何舍入偏差的预测数据。在这种情况下，可以在速率失真分析中考虑四舍五入和未包围的预测数据，以识别用于预测给定视频块的最佳数据。在本公开的另一方面，描述了用于在默认加权预测，隐式加权预测和显式加权预测之间进行选择的技术。在这种情况下，还描述了用于将偏移量添加到预测数据的技术，例如使用显式加权预测的格式来允许否则由隐含或默认加权预测确定的预测数据的偏移。

27. 发明授权

US09008171B2 Two pass quantization for CABAC coders 有权
标题翻译： CABAC编码器的两次通过量化
公开(公告)号：US09008171B2
公开(公告)日：2015-04-14
申请号：US12339884
申请日：2008-12-19
申请人： Marta Karczewicz , Peisong Chen , Yan Ye
发明人： Marta Karczewicz , Peisong Chen , Yan Ye
IPC分类号： H04N7/12 , H04N19/132 , H04N19/19 , H04N19/91 , H04N19/176 , H04N19/147 , H04N19/124
CPC分类号： H04N19/132 , H04N19/124 , H04N19/147 , H04N19/176 , H04N19/19 , H04N19/91
摘要： This disclosure describes techniques for quantizing coefficients of a video block for a video coding process that supports context-based adaptive binary arithmetic coding (CABAC). A method may comprise estimating a last non-zero coefficient of the video block, and generating a set of quantized coefficients for the video block based on an assumption that the estimated last non-zero coefficient is actually the last non-zero coefficient of the video block.
摘要翻译：本公开描述了用于量化用于支持基于上下文的自适应二进制算术编码（CABAC）的视频编码处理的视频块的系数的技术。一种方法可以包括估计视频块的最后非零系数，并且基于估计的最后非零系数实际上是视频的最后非零系数的假设来生成视频块的一组量化系数块。

28. 发明授权

US08971412B2 Advanced interpolation techniques for motion compensation in video coding 有权
标题翻译：高级插值技术用于视频编码中的运动补偿
公开(公告)号：US08971412B2
公开(公告)日：2015-03-03
申请号：US12420256
申请日：2009-04-08
申请人： Yan Ye , Peisong Chen , Marta Karczewicz
发明人： Yan Ye , Peisong Chen , Marta Karczewicz
IPC分类号： H04N7/12 , H04N11/02 , H04N19/136 , H04N19/117 , H04N19/51 , H04N19/192 , H04N19/147 , H04N19/182 , H04N19/82
CPC分类号： H04N19/00139 , H04N19/117 , H04N19/136 , H04N19/147 , H04N19/182 , H04N19/192 , H04N19/523 , H04N19/82
摘要： This disclosure describes various interpolation techniques performed by an encoder and a decoder during the motion compensation process of video coding. In one example, an encoder interpolates pixel values of reference video data based on a plurality of different pre-defined interpolation filters. In this example, the decoder receives a syntax element that identifies an interpolation filter, and interpolates pixel values of reference video data based on the interpolation filter identified by the syntax element. In another example, a method of interpolating predictive video data includes generating half-pixel values based on integer pixel values, rounding the half-pixel values to generate half-pixel interpolated values, storing the half-pixel values as non-rounded versions of the half-pixel values, and generating quarter-pixel values based on the non-rounded versions of the half-pixel values and the integer pixel values.
摘要翻译：本公开描述了在视频编码的运动补偿过程期间由编码器和解码器执行的各种插值技术。在一个示例中，编码器基于多个不同的预定义内插滤波器来内插参考视频数据的像素值。在该示例中，解码器接收标识内插滤波器的语法元素，并且基于由语法元素识别的内插滤波器内插参考视频数据的像素值。在另一示例中，内插预测性视频数据的方法包括基于整数像素值生成半像素值，对半像素值进行舍入以产生半像素内插值，将半像素值存储为非整数版本的基于半像素值和整数像素值的非圆形版本生成四分之一像素值。

29. 发明授权

US08938009B2 Layered encoded bitstream structure 有权
标题翻译：分层编码比特流结构
公开(公告)号：US08938009B2
公开(公告)日：2015-01-20
申请号：US12169451
申请日：2008-07-08
申请人： Yan Ye , Marta Karczewicz , Rahul Panchal
发明人： Yan Ye , Marta Karczewicz , Rahul Panchal
IPC分类号： H04N7/12 , H04N19/00
CPC分类号： H04N19/70
摘要： This disclosure describes techniques for generating a layered encoded bitstream structure that exploits correlation in header information among video blocks of a coded unit of video data. A video encoder configured to operate in accordance with the techniques of this disclosure separates header information of the video blocks of a slice (or other coded unit) from the residual information of the video blocks of the slice. The video encoder run-length encodes the header information of the video blocks to better exploit the correlation of the header information among the blocks of the slice. After encoding the header information of the blocks of the slice, the video encoder encodes the residual information for each of the blocks of the slice. The video encoder transmits the encoded header information as a first sequence of bits and transmits the encoded residual information as second sequence of bits.
摘要翻译：本公开描述了用于生成分层编码比特流结构的技术，其利用视频数据的经译码单元的视频块之间的头信息中的相关性。被配置为根据本公开的技术进行操作的视频编码器将切片（或其他编码单元）的视频块的标题信息与片的视频块的残差信息分开。视频编码器运行长度编码视频块的标题信息，以更好地利用片之间的标题信息的相关性。在对切片的块的标题信息进行编码之后，视频编码器对切片的每个块的残差信息进行编码。视频编码器将经编码的头信息作为第一比特序列发送，并将编码的残差信息作为第二比特序列发送。

30. 发明授权

US08503527B2 Video coding with large macroblocks 有权
公开(公告)号：US08503527B2
公开(公告)日：2013-08-06
申请号：US12562504
申请日：2009-09-18
申请人： Peisong Chen , Yan Ye , Marta Karczewicz
发明人： Peisong Chen , Yan Ye , Marta Karczewicz
IPC分类号： H04N7/12 , H04N11/02
CPC分类号： H04N19/70 , H04N19/103 , H04N19/147 , H04N19/176 , H04N19/44 , H04N19/46 , H04N19/593 , H04N19/61
摘要： Techniques are described for encoding and decoding digital video data using macroblocks that are larger than the macroblocks prescribed by conventional video encoding and decoding standards. For example, the techniques include encoding and decoding a video stream using macroblocks comprising greater than 16×16 pixels. In one example, an apparatus includes a video encoder configured to encode a coded unit comprising a plurality of video blocks, wherein at least one of the plurality of video blocks comprises a size of more than 16×16 pixels and to generate syntax information for the coded unit that includes a maximum size value, wherein the maximum size value indicates a size of a largest one of the plurality of video blocks in the coded unit. The syntax information may also include a minimum size value. In this manner, the encoder may indicate to a decoder the proper syntax decoder to apply to the coded unit.

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