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1.发明授权公开(公告)号：US08275209B2
公开(公告)日：2012-09-25
申请号：US12571365
申请日：2009-09-30
申请人： Daniel Schonberg , Shankar L. Regunathan , Shijun Sun , Gary J. Sullivan , Zhi Zhou , Sridhar Srinivasan
发明人： Daniel Schonberg , Shankar L. Regunathan , Shijun Sun , Gary J. Sullivan , Zhi Zhou , Sridhar Srinivasan
IPC分类号： G06K9/36
CPC分类号： G06F17/147 , H04N19/117 , H04N19/122 , H04N19/14 , H04N19/176 , H04N19/60 , H04N19/86
摘要： In certain embodiments, overlap operators are applied during encoding and/or decoding of digital media, where the overlap operators have reduced DC gain mismatch and/or DC leakage between interior overlap operators and overlap operators at the edge and/or corner. In other embodiments, information indicating a selected tile boundary option for overlap processing can be encoded and/or decoded. The selected tile boundary option indicates one of a hard tile boundary option and a soft tile boundary option for processing with overlap operators. Overlap transform processing can then be applied based at least in part on the selected tile boundary option.
摘要翻译： 在某些实施例中，在数字媒体的编码和/或解码期间应用重叠运算符，其中重叠运算符在边缘和/或角落处内部重叠运算符和重叠运算符之间具有降低的DC增益失配和/或DC泄漏。 在其他实施例中，可以编码和/或解码指示用于重叠处理的所选择的瓦片边界选项的信息。 所选的瓦片边界选项指示用于使用重叠运算符进行处理的硬瓦片边界选项和软瓦片边界选项之一。 然后可以至少部分地基于所选择的瓦片边界选项来应用重叠变换处理。
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公开(公告)号：US08369638B2
公开(公告)日：2013-02-05
申请号：US12165474
申请日：2008-06-30
IPC分类号： G06K9/36
CPC分类号： H04N19/00909 , H04N19/122 , H04N19/60 , H04N19/86
摘要： In certain embodiments, to eliminate DC leakage into surrounding AC values, scaling stage within a photo overlap transform operator is modified such that the off-diagonal elements of the associated scaling matrix have the values of 0. In certain embodiments, the on-diagonal scaling matrix are given the values (0.5, 2). In some embodiments, the scaling is performed using a combination of reversible modulo arithmetic and lifting steps. In yet other embodiments, amount of DC leakage is estimated at the encoder, and preprocessing occurs to mitigate amount of leakage, with the bitstream signaling that preprocessing has occurred. A decoder may then read the signal and use the information to mitigate DC leakage.
摘要翻译： 在某些实施例中，为了将DC泄漏消除到周围的AC值中，修改照片重叠变换算子内的缩放阶段，使得相关联的缩放矩阵的非对角元素具有值0.在某些实施例中， 矩阵给出值（0.5,2）。 在一些实施例中，使用可逆模运算和提升步骤的组合来执行缩放。 在其他实施例中，在编码器处估计DC泄漏量，并且发生预处理以减轻泄漏量，同时比特流指示已经发生预处理。 然后，解码器可以读取信号并使用该信息来减轻DC泄漏。
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公开(公告)号：US20090297054A1
公开(公告)日：2009-12-03
申请号：US12165474
申请日：2008-06-30
IPC分类号： G06K9/36
CPC分类号： H04N19/00909 , H04N19/122 , H04N19/60 , H04N19/86
摘要： In certain embodiments, to eliminate DC leakage into surrounding AC values, scaling stage within a photo overlap transform operator is modified such that the off-diagonal elements of the associated scaling matrix have the values of 0. In certain embodiments, the on-diagonal scaling matrix are given the values (0.5, 2). In some embodiments, the scaling is performed using a combination of reversible modulo arithmetic and lifting steps. In yet other embodiments, amount of DC leakage is estimated at the encoder, and preprocessing occurs to mitigate amount of leakage, with the bitstream signaling that preprocessing has occurred. A decoder may then read the signal and use the information to mitigate DC leakage.
摘要翻译： 在某些实施例中，为了将DC泄漏消除到周围的AC值中，修改照片重叠变换算子内的缩放阶段，使得相关联的缩放矩阵的非对角元素具有值0.在某些实施例中， 矩阵给出值（0.5,2）。 在一些实施例中，使用可逆模运算和提升步骤的组合来执行缩放。 在其他实施例中，在编码器处估计DC泄漏量，并且发生预处理以减轻泄漏量，同时比特流指示已经发生预处理。 然后，解码器可以读取信号并使用该信息来减轻DC泄漏。
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4.发明授权公开(公告)号：US08953673B2
公开(公告)日：2015-02-10
申请号：US12074030
申请日：2008-02-29
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.
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公开(公告)号：US08711948B2
公开(公告)日：2014-04-29
申请号：US12077768
申请日：2008-03-21
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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公开(公告)号：US20090238279A1
公开(公告)日：2009-09-24
申请号：US12077768
申请日：2008-03-21
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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7.发明申请Scalable video coding and decoding with sample bit depth and chroma high-pass residual layers 有权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
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。
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公开(公告)号：US08054886B2
公开(公告)日：2011-11-08
申请号：US11772070
申请日：2007-06-29
CPC分类号： H04N19/186 , H04N19/46 , H04N19/63 , H04N19/70
摘要： Rules for the signaling and interpretation of chroma position are described. One rule, called the short rule, defines fifteen discrete chroma centering positions and corresponding four-bit syntax element. Another rule, called the extended rule, defines 81 discrete chroma centering positions and corresponding seven-bit syntax elements. A described method includes receiving digital media data at a digital media encoder, determining chroma position information for the received digital media data, and representing the chroma position information with one or more syntax elements in an encoded bitstream. The one or more syntax elements are operable to communicate the chroma position information to a digital media decoder. The chroma position information facilitates an image rotation or flip.
摘要翻译： 描述色度位置信号和解释规则。 称为短规则的一个规则定义了十五个离散色度对中位置和相应的四位语法元素。 称为扩展规则的另一个规则定义了81个离散色度对中位置和相应的七位语法元素。 所描述的方法包括在数字媒体编码器处接收数字媒体数据，确定接收到的数字媒体数据的色度位置信息，并用编码比特流中的一个或多个语法元素表示色度位置信息。 一个或多个语法元素可操作以将色度位置信息传送到数字媒体解码器。 色度位置信息有助于图像旋转或翻转。
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公开(公告)号：US08107571B2
公开(公告)日：2012-01-31
申请号：US11726395
申请日：2007-03-20
IPC分类号： H04B1/10
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。
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公开(公告)号：US20080232452A1
公开(公告)日：2008-09-25
申请号：US11726395
申请日：2007-03-20
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。
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