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31. 发明授权

US07724827B2 Multi-layer run level encoding and decoding 有权
标题翻译：多层运行级编解码
公开(公告)号：US07724827B2
公开(公告)日：2010-05-25
申请号：US10826971
申请日：2004-04-15
申请人： Jie Liang , Chih-Lung Lin , Shankar Regunathan , Sridhar Srinivasan
发明人： Jie Liang , Chih-Lung Lin , Shankar Regunathan , Sridhar Srinivasan
IPC分类号： H03M7/44 , H03M7/40 , H03M7/48 , H04N7/26 , H03M7/46
CPC分类号： H04N19/93 , H04N19/102 , H04N19/109 , H04N19/11 , H04N19/112 , H04N19/117 , H04N19/129 , H04N19/13 , H04N19/137 , H04N19/146 , H04N19/147 , H04N19/159 , H04N19/16 , H04N19/172 , H04N19/176 , H04N19/18 , H04N19/184 , H04N19/186 , H04N19/196 , H04N19/46 , H04N19/463 , H04N19/51 , H04N19/52 , H04N19/523 , H04N19/593 , H04N19/61 , H04N19/63 , H04N19/70 , H04N19/82 , H04N19/86
摘要： Entropy coding and decoding techniques are described, which may be implemented separately or in combination. For example, a video encoder uses two-layer run level coding to reduce bitrate for frequency transform coefficients in a quick and efficient manner, and a video decoder uses corresponding two-layer run level decoding. This two-layer coding/decoding can be generalized to more than two layers of run level coding/decoding. The video encoder and decoder exploit common patterns in run level information to reduce code table size and create opportunities for early termination of decoding. Using zoned Huffman code tables helps limit overall table size while still providing a level of adaptivity in encoding and decoding. Using embedded Huffman code tables allows the encoder and decoder to reuse codes for 8×8, 8×4, 4×8, and 4×4 blocks.
摘要翻译：描述了熵编码和解码技术，其可以单独地或组合地实现。例如，视频编码器使用双层运行级编码以快速且有效的方式降低频率变换系数的比特率，并且视频解码器使用对应的双层运行级解码。这种双层编码/解码可以推广到两层以上的运行级编码/解码。视频编码器和解码器利用运行级信息中的常见模式来减少代码表大小，并为解码提早终止创造机会。使用分区霍夫曼代码表有助于限制整体表格大小，同时在编码和解码中仍然提供一定程度的适应性。使用嵌入式霍夫曼码表，编码器和解码器可以重用8×8,8×4,4×8,4×4块的码。

32. 发明申请

US20090238279A1 Motion-compensated prediction of inter-layer residuals 有权
标题翻译：层间残差运动补偿预测
公开(公告)号：US20090238279A1
公开(公告)日：2009-09-24
申请号：US12077768
申请日：2008-03-21
申请人： Chengjie Tu , Sridhar Srinivasan , Shankar Regunathan , Shijun Sun , Chih-Lung Lin
发明人： Chengjie Tu , Sridhar Srinivasan , Shankar Regunathan , Shijun Sun , Chih-Lung Lin
IPC分类号： H04N7/34 , H04N7/26
CPC分类号： H04N19/00442 , H04N19/30 , H04N19/34 , H04N19/61 , H04N19/63
摘要： Techniques and tools are described for scalable video encoding and decoding. In some embodiments, an encoding tool encodes base layer video and outputs encoded base layer video in a base layer bit stream. The encoding tool encodes inter-layer residual video (representing differences between input video and reconstructed base layer video) using motion compensation relative to previously reconstructed inter-layer residual video. For the inter-layer residual video, the encoding tool outputs motion information and motion-compensated prediction residuals in an enhancement layer bit stream. A decoding tool receives the base layer bit stream and enhancement layer bit stream, reconstructs base layer video, reconstructs inter-layer residual video, and combines the reconstructed base layer video and reconstructed inter-layer residual video. Using motion compensation for the inter-layer residual video facilitates the use of separate motion vectors and separate codecs for the base layer video and inter-layer residual video.
摘要翻译：描述了可扩展视频编码和解码的技术和工具。在一些实施例中，编码工具对基层视频进行编码并在基层比特流中输出经编码的基层视频。编码工具使用相对于先前重建的层间残留视频的运动补偿来编码层间残差视频（表示输入视频和重建的基本层视频之间的差异）。对于层间残差视频，编码工具在增强层比特流中输出运动信息和运动补偿预测残差。解码工具接收基层比特流和增强层比特流，重构基层视频，重建层间残留视频，并组合重建的基层视频和重建层间残留视频。对于层间残留视频使用运动补偿有助于使用单独的运动矢量和单独的编解码器用于基本层视频和层间残留视频。

33. 发明申请

US20090219994A1 Scalable video coding and decoding with sample bit depth and chroma high-pass residual layers 有权
标题翻译：具有采样位深度和色度高通残余层的可扩展视频编码和解码
公开(公告)号：US20090219994A1
公开(公告)日：2009-09-03
申请号：US12074030
申请日：2008-02-29
申请人： Chengjie Tu , Sridhar Srinivasan , Shankar Regunathan , Shijun Sun
发明人： Chengjie Tu , Sridhar Srinivasan , Shankar Regunathan , Shijun Sun
IPC分类号： H04N7/26
CPC分类号： H04N19/00315 , H04N19/186 , H04N19/33 , H04N19/36 , H04N19/59
摘要： Techniques and tools are described for scalable video encoding and decoding. In some embodiments, an input frame is downsampled in terms of sample depth and chroma sampling rate, encoded, and output from the encoder as a base layer bitstream. The base layer bitstream is also reconstructed and upsampled to produce a reconstructed bitstream which is subtracted from the original input frame to produce a residual layer. The residual layer is split and encoded as a sample depth residual layer bitstream and a chroma high-pass residual layer bitstream. To recover the encoded input frame, a decoder receives one or more of these bitstreams, decodes them, and combines them to form a reconstructed image. The use of separate codecs is allowed for the base layer and the enhancement layers, without inter-layer dependencies.
摘要翻译：描述了可扩展视频编码和解码的技术和工具。在一些实施例中，输入帧根据样本深度和色度采样率进行下采样，编码并从编码器输出作为基本层比特流。基层比特流也被重建并上采样以产生从原始输入帧中减去的重构比特流，以产生残余层。残余层被分割并编码为采样深度残留层比特流和色度高通残留层比特流。为了恢复编码的输入帧，解码器接收这些比特流中的一个或多个，对它们进行解码，并将它们组合以形成重构的图像。对于基本层和增强层，允许使用单独的编解码器，而不需要层间依赖。

34. 发明申请

US20080232452A1 Parameterized filters and signaling techniques 有权
标题翻译：参数化滤波器和信令技术
公开(公告)号：US20080232452A1
公开(公告)日：2008-09-25
申请号：US11726395
申请日：2007-03-20
申请人： Gary J. Sullivan , Sridhar Srinivasan , Shankar Regunathan , Chengjie Tu
发明人： Gary J. Sullivan , Sridhar Srinivasan , Shankar Regunathan , Chengjie Tu
IPC分类号： H03H7/30
CPC分类号： H03H17/0294 , H03H2017/0297
摘要： Filter taps for filters are specified by filter coefficient parameters. The filter taps are greater in number than the coefficient parameters from which the filter taps are calculated. For example, two coefficient parameters are used to specify a four-tap filter. Filter information can be signaled in a bitstream, such as by signaling one or more family parameters for a filter family and, for each filter in a family, signaling one or more filter tap parameters from which filter taps can be derived. Family parameters can include a number of filters parameter, a resolution parameter, a scaling bits parameter, and/or a full integer position filter present parameter that indicates whether or not the filters include an integer position filter. Filter parameters can be signaled and used to determine coefficient parameters from which filter taps are calculated.
摘要翻译：滤波器的滤波器滤波器由滤波器系数参数指定。滤波器抽头的数量大于计算滤波器抽头的系数参数。例如，使用两个系数参数来指定四抽头滤波器。滤波器信息可以在比特流中发信号通知，例如通过发信号通知用于滤波器族的一个或多个系列参数，并且对于一个系列中的每个滤波器来说，信号通知一个或多个滤波器抽头参数，从中可以导出滤波器抽头。家族参数可以包括多个滤波器参数，分辨率参数，缩放比特参数和/或整数整数位置滤波器参数，其指示滤波器是否包括整数位置滤波器。滤波器参数可以用信号通知并用于确定计算滤波器抽头的系数参数。

35. 发明申请

US20080037657A1 PARAMETERIZATION FOR FADING COMPENSATION 有权
标题翻译：渐变补偿的参数化
公开(公告)号：US20080037657A1
公开(公告)日：2008-02-14
申请号：US11838758
申请日：2007-08-14
申请人： Sridhar Srinivasan , Shankar Regunathan
发明人： Sridhar Srinivasan , Shankar Regunathan
IPC分类号： H04N7/12
CPC分类号： H04N19/61 , H04N19/17 , H04N19/186 , H04N19/46 , H04N19/51 , H04N19/517 , H04N19/53 , H04N19/70 , H04N19/85 , H04N19/91 , H04N19/93
摘要： Techniques and tools for performing fading compensation in video processing applications are described. For example, during encoding, a video encoder performs fading compensation using fading parameters comprising a scaling parameter and a shifting parameter on one or more reference images. During decoding, a video decoder performs corresponding fading compensation on the one or more reference images.
摘要翻译：描述了在视频处理应用中执行衰落补偿的技术和工具。例如，在编码期间，视频编码器使用包括缩放参数和一个或多个参考图像上的移位参数的衰落参数来执行衰落补偿。在解码期间，视频解码器对一个或多个参考图像执行相应的衰落补偿。

36. 发明授权

US07277486B2 Parameterization for fading compensation 有权
标题翻译：衰落补偿参数化
公开(公告)号：US07277486B2
公开(公告)日：2007-10-02
申请号：US10378958
申请日：2003-03-03
申请人： Sridhar Srinivasan , Shankar Regunathan
发明人： Sridhar Srinivasan , Shankar Regunathan
IPC分类号： H04B1/66 , H04N7/12 , H04N11/02 , H04N11/04
CPC分类号： H04N19/61 , H04N19/17 , H04N19/186 , H04N19/46 , H04N19/51 , H04N19/517 , H04N19/53 , H04N19/70 , H04N19/85 , H04N19/91 , H04N19/93
摘要： Techniques and tools for performing fading compensation in video processing applications are described. For example, during encoding, a video encoder performs fading compensation using fading parameters comprising a scaling parameter and a shifting parameter on one or more reference images. During decoding, a video decoder performs corresponding fading compensation on the one or more reference images.
摘要翻译：描述了在视频处理应用中执行衰落补偿的技术和工具。例如，在编码期间，视频编码器使用包括缩放参数和一个或多个参考图像上的移位参数的衰落参数来执行衰落补偿。在解码期间，视频解码器对一个或多个参考图像执行相应的衰落补偿。

37. 发明授权

US07242713B2 2-D transforms for image and video coding 有权
标题翻译： 2-D转换用于图像和视频编码
公开(公告)号：US07242713B2
公开(公告)日：2007-07-10
申请号：US10376147
申请日：2003-02-28
申请人： Sridhar Srinivasan , Shankar Regunathan
发明人： Sridhar Srinivasan , Shankar Regunathan
IPC分类号： H04B1/66
CPC分类号： G06T9/007 , G06F17/147
摘要： A set of one and two-dimensional transforms is constructed subject to certain range limited constraints to provide a computationally efficient transform implementation, such as for use in image and video coding. The constraints can include that the transform has a scaled integer implementation, provides perfect or near perfect reconstruction, has a DCT-like basis, is limited to coefficient within a range for representation in n-bits (e.g., n is 16 bits), has basis functions that are close in norm, and provides sufficient headroom for overflow of the range. A set of transforms is constructed with this procedure having an implementation within a 16-bit integer range for efficient computation using integer matrix multiplication operations.
摘要翻译：一组一维和二维变换被构造为受到一定范围有限的限制，以提供计算上有效的变换实现，例如用于图像和视频编码。约束可以包括变换具有缩放的整数实现，提供完美或接近完美的重构，具有DCT类的基础，被限制在用于表示n比特（例如，n为16比特）的范围内的系数，具有基本功能在规范上接近，并为范围的溢出提供了足够的余量。使用该过程构造一组变换，其具有在16位整数范围内的实现，用于使用整数矩阵乘法运算进行有效计算。

38. 发明授权

US09363536B2 Parameterization for fading compensation 有权
公开(公告)号：US09363536B2
公开(公告)日：2016-06-07
申请号：US13584671
申请日：2012-08-13
申请人： Sridhar Srinivasan , Shankar Regunathan
发明人： Sridhar Srinivasan , Shankar Regunathan
IPC分类号： H04N7/12 , H04N19/93 , H04N19/70 , H04N19/46 , H04N19/51 , H04N19/61 , H04N19/91 , H04N19/186 , H04N19/17 , H04N19/53 , H04N19/517 , H04N19/85
CPC分类号： H04N19/61 , H04N19/17 , H04N19/186 , H04N19/46 , H04N19/51 , H04N19/517 , H04N19/53 , H04N19/70 , H04N19/85 , H04N19/91 , H04N19/93
摘要： Techniques and tools for performing fading compensation in video processing applications are described. For example, during encoding, a video encoder performs fading compensation using fading parameters comprising a scaling parameter and a shifting parameter on one or more reference images. During decoding, a video decoder performs corresponding fading compensation on the one or more reference images.

39. 发明授权

US08953673B2 Scalable video coding and decoding with sample bit depth and chroma high-pass residual layers 有权
公开(公告)号：US08953673B2
公开(公告)日：2015-02-10
申请号：US12074030
申请日：2008-02-29
申请人： Chengjie Tu , Sridhar Srinivasan , Shankar Regunathan , Shijun Sun
发明人： Chengjie Tu , Sridhar Srinivasan , Shankar Regunathan , Shijun Sun
IPC分类号： H04N7/12 , H04N19/186 , H04N19/36 , H04N19/59 , H04N19/33
CPC分类号： H04N19/00315 , H04N19/186 , H04N19/33 , H04N19/36 , H04N19/59
摘要： Techniques and tools are described for scalable video encoding and decoding. In some embodiments, an input frame is downsampled in terms of sample depth and chroma sampling rate, encoded, and output from the encoder as a base layer bitstream. The base layer bitstream is also reconstructed and upsampled to produce a reconstructed bitstream which is subtracted from the original input frame to produce a residual layer. The residual layer is split and encoded as a sample depth residual layer bitstream and a chroma high-pass residual layer bitstream. To recover the encoded input frame, a decoder receives one or more of these bitstreams, decodes them, and combines them to form a reconstructed image. The use of separate codecs is allowed for the base layer and the enhancement layers, without inter-layer dependencies.

40. 发明授权

US08942289B2 Computational complexity and precision control in transform-based digital media codec 有权
标题翻译：基于变换的数字媒体编解码器的计算复杂度和精度控制
公开(公告)号：US08942289B2
公开(公告)日：2015-01-27
申请号：US11772076
申请日：2007-06-29
申请人： Sridhar Srinivasan , Chengjie Tu , Shankar Regunathan
发明人： Sridhar Srinivasan , Chengjie Tu , Shankar Regunathan
IPC分类号： H04N11/02 , H04N21/6547 , H04N19/122 , H04N19/60 , H04N19/156 , H04N19/46
CPC分类号： H04N21/6547 , H04N19/122 , H04N19/156 , H04N19/46 , H04N19/60
摘要： A digital media encoder/decoder includes signaling of various modes relating to computation complexity and precision at decoding. The encoder may send a syntax element indicating arithmetic precision (e.g., using 16 or 32-bit operations) of the transform operations performed at decoding. The encoder also may signal whether to apply scaling at the decoder output, which permits a wider dynamic range of intermediate data at decoding, but adds to computational complexity due to the scaling operation.
摘要翻译：数字媒体编码器/解码器包括在解码时与计算复杂性和精度有关的各种模式的信令。编码器可以发送指示在解码时执行的变换操作的算术精度（例如，使用16或32位操作）的语法元素。编码器还可以发信号是否在解码器输出端应用缩放，这允许解码时的中间数据的较宽的动态范围，但由于缩放操作而增加了计算复杂度。

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