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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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公开(公告)号：US20080037657A1
公开(公告)日：2008-02-14
申请号：US11838758
申请日：2007-08-14
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。
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公开(公告)号：US07277486B2
公开(公告)日：2007-10-02
申请号：US10378958
申请日：2003-03-03
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。
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公开(公告)号：US07242713B2
公开(公告)日：2007-07-10
申请号：US10376147
申请日：2003-02-28
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。
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公开(公告)号：US09363536B2
公开(公告)日：2016-06-07
申请号：US13584671
申请日：2012-08-13
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.
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66.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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67.发明授权Computational complexity and precision control in transform-based digital media codec 有权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
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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公开(公告)号：US08515194B2
公开(公告)日：2013-08-20
申请号：US11772019
申请日：2007-06-29
CPC分类号： G06T9/00 , H04N19/132 , H04N19/17 , H04N19/176 , H04N19/184 , H04N19/46 , H04N19/60 , H04N19/70
摘要： Techniques and tools for signaling and using image tiling information (such as syntax elements relating index tables and header size), signaling and using windowing information (such as techniques for using windowing parameters when rotating, cropping or flipping images), and signaling and using alpha channel information are described.
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公开(公告)号：US20120307910A1
公开(公告)日：2012-12-06
申请号：US13584671
申请日：2012-08-13
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。
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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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