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41. 发明申请

US20050013494A1 In-loop deblocking filter 审中-公开
标题翻译：环路去块滤波器
公开(公告)号：US20050013494A1
公开(公告)日：2005-01-20
申请号：US10623128
申请日：2003-07-18
申请人： Sridhar Srinivasan , Thomas Holcomb , Pohsiang Hsu
发明人： Sridhar Srinivasan , Thomas Holcomb , Pohsiang Hsu
IPC分类号： G06K9/36 , G06K9/40 , H04N7/26 , H04N7/50
CPC分类号： H04N19/86 , H04N19/117 , H04N19/136 , H04N19/139 , H04N19/159 , H04N19/61 , H04N19/82
摘要： An improved deblocking filter for a video encoder/decoder reduces the computation expense of evaluating deblocking conditions. The improved deblocking filter bases the decision to filter block edges on sampled statistics of edge presence and strength, and also uses information of the motion vector, coded block pattern and transform type.
摘要翻译：用于视频编码器/解码器的改进的去块滤波器降低了评估去块条件的计算费用。改进的去块滤波器基于对边缘存在和强度的采样统计过滤块边缘的决定，并且还使用运动矢量，编码块模式和变换类型的信息。

42. 发明申请

US20050013497A1 Intraframe and interframe interlace coding and decoding 有权
标题翻译：帧内和帧间交错编码和解码
公开(公告)号：US20050013497A1
公开(公告)日：2005-01-20
申请号：US10622284
申请日：2003-07-18
申请人： Pohsiang Hsu , Bruce Lin , Thomas Holcomb , Kunal Mukerjee , Sridhar Srinivasan
发明人： Pohsiang Hsu , Bruce Lin , Thomas Holcomb , Kunal Mukerjee , Sridhar Srinivasan
IPC分类号： G06K9/36 , G06K9/46 , H04N7/26 , H04N7/46 , H04N7/50
CPC分类号： H04N19/577 , H04N19/102 , H04N19/107 , H04N19/136 , H04N19/16 , H04N19/18 , H04N19/186 , H04N19/46 , H04N19/52 , H04N19/61
摘要： Techniques and tools for encoding and decoding video images (e.g., interlaced frames) are described. For example, a video encoder or decoder processes 4:1:1 format macroblocks comprising four 8×8 luminance blocks and four 4×8 chrominance blocks. In another aspect, fields in field-coded macroblocks are coded independently of one another (e.g., by sending encoded blocks in field order). Other aspects include DC/AC prediction techniques and motion vector prediction techniques for interlaced frames.
摘要翻译：描述了用于编码和解码视频图像（例如，隔行扫描帧）的技术和工具。例如，视频编码器或解码器处理包括四个8×8亮度块和四个4×8色度块的4:1:1格式宏块。在另一方面，字段编码宏块中的字段彼此独立地被编码（例如，通过以现场顺序发送编码的块）。其他方面包括用于交错帧的DC / AC预测技术和运动矢量预测技术。

43. 发明授权

US09313509B2 DC coefficient signaling at small quantization step sizes 有权
标题翻译：小量化步长的直流系数信号
公开(公告)号：US09313509B2
公开(公告)日：2016-04-12
申请号：US12815029
申请日：2010-06-14
申请人： Chih-Lung Lin , Shankar Regunathan , Sridhar Srinivasan
发明人： Chih-Lung Lin , Shankar Regunathan , Sridhar Srinivasan
IPC分类号： H04N7/12 , H04N11/02 , H04N11/04 , H04N19/17 , H04N19/176 , H04N19/70 , H04N19/46 , H04N19/61 , H04N19/124 , H04N19/126 , H04N19/136 , H04N19/137 , H04N19/18
CPC分类号： H04N19/18 , H04N19/124 , H04N19/126 , H04N19/136 , H04N19/137 , H04N19/17 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/44 , H04N19/46 , H04N19/61 , H04N19/625 , H04N19/70 , H04N19/91
摘要： Described tools and techniques relate to signaling for DC coefficients at small quantization step sizes. The techniques and tools can be used in combination or independently. For example, a tool such as a video encoder or decoder processes a VLC that indicates a DC differential for a DC coefficient, a FLC that indicates a value refinement for the DC differential, and a third code that indicates the sign for the DC differential. Even with the small quantization step sizes, the tool uses a VLC table with DC differentials for DC coefficients above the small quantization step sizes. The FLCs for DC differentials have lengths that vary depending on quantization step size.
摘要翻译：描述的工具和技术涉及在小量化步长下用于DC系数的信令。技术和工具可以组合使用或独立使用。例如，诸如视频编码器或解码器的工具处理指示DC系数的DC差分的VLC，指示DC差分的值细化的FLC以及指示DC差分的符号的第三代码。即使使用较小的量化步长，该工具也会使用具有DC系数的直流差分的VLC表，其高于小量化步长。用于DC差分的FLC具有随量化步长变化的长度。

44. 发明申请

US20060262979A1 Skip macroblock coding 有权
公开(公告)号：US20060262979A1
公开(公告)日：2006-11-23
申请号：US11495354
申请日：2006-07-27
申请人： Sridhar Srinivasan , Pohsiang Hsu
发明人： Sridhar Srinivasan , Pohsiang Hsu
IPC分类号： G06K9/36
CPC分类号： H04N19/103 , H04N19/105 , H04N19/129 , H04N19/132 , H04N19/146 , H04N19/147 , H04N19/172 , H04N19/176 , H04N19/196 , H04N19/46 , H04N19/50 , H04N19/507 , H04N19/51 , H04N19/513 , H04N19/52 , H04N19/523 , H04N19/527 , H04N19/587 , H04N19/61 , H04N19/70 , H04N19/82 , H04N19/86
摘要： Various techniques and tools for encoding and decoding (e.g., in a video encoder/decoder) binary information (e.g., skipped macroblock information) are described. In some embodiments, the binary information is arranged in a bit plane, and the bit plane is coded at the picture/frame layer. The encoder and decoder process the binary information and, in some embodiments, switch coding modes. For example, the encoder and decoder use normal, row-skip, column-skip, or differential modes, or other and/or additional modes. In some embodiments, the encoder and decoder define a skipped macroblock as a predicted macroblock whose motion is equal to its causally predicted motion and which has zero residual error. In some embodiments, the encoder and decoder use a raw coding mode to allow for low-latency applications.

45. 发明申请

US20110280303A1 FLEXIBLE RANGE REDUCTION 有权
标题翻译：灵活范围减少
公开(公告)号：US20110280303A1
公开(公告)日：2011-11-17
申请号：US13191335
申请日：2011-07-26
申请人： Shankar Regunathan , Sridhar Srinivasan , Jie Liang , Chih-Lung Lin , Minghui Xia
发明人： Shankar Regunathan , Sridhar Srinivasan , Jie Liang , Chih-Lung Lin , Minghui Xia
IPC分类号： H04N7/28 , H04N11/02
CPC分类号： H04N19/00145 , H04N19/137 , H04N19/16 , H04N19/196 , H04N19/46 , H04N19/51 , H04N19/61 , H04N19/70
摘要： Techniques and tools are described for flexible range reduction of samples of video. For example, an encoder signals a first set of one or more syntax elements for range reduction of luma samples and signals a second set of one or more syntax elements for range reduction of chroma samples. The encoder selectively scales down the luma samples and chroma samples in a manner consistent with the first syntax element(s) and second syntax element(s), respectively. Or, an encoder signals range reduction syntax element(s) in an entry point header for an entry point segment, where the syntax element(s) apply to pictures in the entry point segment. If range reduction is used for the pictures, the encoder scales down samples of the pictures. Otherwise, the encoder skips the scaling down. A decoder performs corresponding parsing and scaling up operations.
摘要翻译：描述了技术和工具，用于灵活地缩减视频样本。例如，编码器用信号通知一个或多个语法元素的第一组，用于亮度样本的范围减小，并且为第二组一个或多个语法元素用于色度样本的范围缩小。编码器分别以与第一语法元素和第二语法元素一致的方式选择性地缩小亮度样本和色度样本。或者，编码器对入口点段的入口点标题中的范围缩小语法元素进行信号，其中语法元素适用于入口点段中的图像。如果图像使用范围缩小，则编码器缩小图像的样本。否则，编码器跳过缩小比例。解码器执行相应的解析和放大操作。

46. 发明授权

US08014450B2 Flexible range reduction 有权
标题翻译：弹性范围缩小
公开(公告)号：US08014450B2
公开(公告)日：2011-09-06
申请号：US10989702
申请日：2004-11-15
申请人： Shankar Regunathan , Sridhar Srinivasan , Jie Liang , Chih-Lung Lin , Minghui Xia
发明人： Shankar Regunathan , Sridhar Srinivasan , Jie Liang , Chih-Lung Lin , Minghui Xia
IPC分类号： H04N7/12
CPC分类号： H04N19/00145 , H04N19/137 , H04N19/16 , H04N19/196 , H04N19/46 , H04N19/51 , H04N19/61 , H04N19/70
摘要： Techniques and tools are described for flexible range reduction of samples of video. For example, an encoder signals a first set of one or more syntax elements for range reduction of luma samples and signals a second set of one or more syntax elements for range reduction of chroma samples. The encoder selectively scales down the luma samples and chroma samples in a manner consistent with the first syntax element(s) and second syntax element(s), respectively. Or, an encoder signals range reduction syntax element(s) in an entry point header for an entry point segment, where the syntax element(s) apply to pictures in the entry point segment. If range reduction is used for the pictures, the encoder scales down samples of the pictures. Otherwise, the encoder skips the scaling down. A decoder performs corresponding parsing and scaling up operations.
摘要翻译：描述了技术和工具，用于灵活地缩减视频样本。例如，编码器用信号通知一个或多个语法元素的第一组，用于亮度样本的范围减小，并且为第二组一个或多个语法元素用于色度样本的范围缩小。编码器分别以与第一语法元素和第二语法元素一致的方式选择性地缩小亮度样本和色度样本。或者，编码器对入口点段的入口点标题中的范围缩小语法元素进行信号，其中语法元素适用于入口点段中的图像。如果图像使用范围缩小，则编码器缩小图像的样本。否则，编码器跳过缩小比例。解码器执行相应的解析和放大操作。

47. 发明申请

US20100246671A1 DC COEFFICIENT SIGNALING AT SMALL QUANTIZATION STEP SIZES 有权
标题翻译：直流系数小信号步进尺寸信号
公开(公告)号：US20100246671A1
公开(公告)日：2010-09-30
申请号：US12815029
申请日：2010-06-14
申请人： Chih-Lung Lin , Shankar Regunathan , Sridhar Srinivasan
发明人： Chih-Lung Lin , Shankar Regunathan , Sridhar Srinivasan
IPC分类号： H04N7/26
CPC分类号： H04N19/18 , H04N19/124 , H04N19/126 , H04N19/136 , H04N19/137 , H04N19/17 , H04N19/176 , H04N19/184 , H04N19/186 , H04N19/44 , H04N19/46 , H04N19/61 , H04N19/625 , H04N19/70 , H04N19/91
摘要： Described tools and techniques relate to signaling for DC coefficients at small quantization step sizes. The techniques and tools can be used in combination or independently. For example, a tool such as a video encoder or decoder processes a VLC that indicates a DC differential for a DC coefficient, a FLC that indicates a value refinement for the DC differential, and a third code that indicates the sign for the DC differential. Even with the small quantization step sizes, the tool uses a VLC table with DC differentials for DC coefficients above the small quantization step sizes. The FLCs for DC differentials have lengths that vary depending on quantization step size.
摘要翻译：描述的工具和技术涉及在小量化步长下用于DC系数的信令。技术和工具可以组合使用或独立使用。例如，诸如视频编码器或解码器的工具处理指示DC系数的DC差分的VLC，指示DC差分的值细化的FLC以及指示DC差分的符号的第三代码。即使使用较小的量化步长，该工具也会使用具有DC系数的直流差分的VLC表，其高于小量化步长。用于DC差分的FLC具有随量化步长变化的长度。

48. 发明授权

US07609763B2 Advanced bi-directional predictive coding of video frames 有权
标题翻译：视频帧的高级双向预测编码
公开(公告)号：US07609763B2
公开(公告)日：2009-10-27
申请号：US10622378
申请日：2003-07-18
申请人： Kunal Mukerjee , Sridhar Srinivasan , Bruce Chih-Lung Lin
发明人： Kunal Mukerjee , Sridhar Srinivasan , Bruce Chih-Lung Lin
IPC分类号： H04N7/12 , H04N11/02 , H04N11/04 , H04B1/66
CPC分类号： H04N19/577 , H04N19/132 , H04N19/56 , H04N19/587
摘要： Techniques and tools for coding/decoding of video images, and in particular, B-frames, are described. In one aspect, a video encoder/decoder determines a fraction for a current image in a sequence. The fraction represents an estimated temporal distance position for the current image relative to an interval between a reference images for the current image. The video encoder/decoder processes the fraction along with a motion vector for a first reference image, resulting in a representation of motion (e.g., constant or variable velocity motion) in the current image. Other aspects are also described, including intra B-frames, forward and backward buffers for motion vector prediction, bitplane encoding of direct mode prediction information, multiple motion vector resolutions/interpolation filters for B-frames, proactive dropping of B-frames, and signaling of dropped predicted frames.
摘要翻译：描述了用于视频图像，特别是B帧的编码/解码的技术和工具。在一个方面，视频编码器/解码器确定序列中当前图像的分数。该分数表示当前图像相对于当前图像的参考图像之间的间隔的估计时间距离位置。视频编码器/解码器将分数与第一参考图像的运动矢量一起处理，导致当前图像中的运动（例如恒定或可变速度运动）的表示。还描述了其他方面，包括帧内B帧，用于运动矢量预测的前向和后向缓冲器，直接模式预测信息的位平面编码，B帧的多个运动矢量分辨率/内插滤波器，B帧的主动丢弃和信令的预测帧丢失。

49. 发明授权

US08855202B2 Flexible range reduction 有权
标题翻译：弹性范围缩小
公开(公告)号：US08855202B2
公开(公告)日：2014-10-07
申请号：US13191335
申请日：2011-07-26
申请人： Shankar Regunathan , Sridhar Srinivasan , Jie Liang , Chih-Lung Lin , Minghui Xia
发明人： Shankar Regunathan , Sridhar Srinivasan , Jie Liang , Chih-Lung Lin , Minghui Xia
IPC分类号： H04N7/12 , H04N19/46 , H04N19/137 , H04N19/51 , H04N19/196 , H04N19/16 , H04N19/61 , H04N19/70
CPC分类号： H04N19/00145 , H04N19/137 , H04N19/16 , H04N19/196 , H04N19/46 , H04N19/51 , H04N19/61 , H04N19/70
摘要： Techniques and tools are described for flexible range reduction of samples of video. For example, an encoder signals a first set of one or more syntax elements for range reduction of luma samples and signals a second set of one or more syntax elements for range reduction of chroma samples. The encoder selectively scales down the luma samples and chroma samples in a manner consistent with the first syntax element(s) and second syntax element(s), respectively. Or, an encoder signals range reduction syntax element(s) in an entry point header for an entry point segment, where the syntax element(s) apply to pictures in the entry point segment. If range reduction is used for the pictures, the encoder scales down samples of the pictures. Otherwise, the encoder skips the scaling down. A decoder performs corresponding parsing and scaling up operations.
摘要翻译：描述了技术和工具，用于灵活地缩减视频样本。例如，编码器用信号通知一个或多个语法元素的第一组，用于亮度样本的范围减小，并且为第二组一个或多个语法元素用于色度样本的范围缩小。编码器分别以与第一语法元素和第二语法元素一致的方式选择性地缩小亮度样本和色度样本。或者，编码器对入口点段的入口点标题中的范围缩小语法元素进行信号，其中语法元素适用于入口点段中的图像。如果图像使用范围缩小，则编码器缩小图像的样本。否则，编码器跳过缩小比例。解码器执行相应的解析和放大操作。

50. 发明授权

US08711948B2 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：US08711948B2
公开(公告)日：2014-04-29
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： H04N7/12
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。

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