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公开(公告)号：US07379496B2
公开(公告)日：2008-05-27
申请号：US10644258
申请日：2003-08-19
IPC分类号： H04N7/12
CPC分类号： H04N19/527 , H04N19/59 , H04N19/86
摘要： A video encoder performs multi-resolution video coding. For example, the encoder adaptively changes frame sizes to reduce blocking artifacts at low bitrates. A video decoder performs corresponding multi-resolution decoding.
摘要翻译： 视频编码器执行多分辨率视频编码。 例如，编码器自适应地改变帧大小以减少低比特率下的块伪影。 视频解码器执行相应的多分辨率解码。
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公开(公告)号：US07852919B2
公开(公告)日：2010-12-14
申请号：US10989596
申请日：2004-11-15
摘要： A decoder receives a field start code for an entry point key frame. The field start code indicates a second coded interlaced video field in the entry point key frame following a first coded interlaced video field in the entry point key frame and indicates a point to begin decoding of the second coded interlaced video field. The first coded interlaced video field is a predicted field, and the second coded interlaced video field is an intra-coded field. The decoder decodes the second field without decoding the first field. The field start code can be followed by a field header. The decoder can receive a frame header for the entry point key frame. The frame header may comprise a syntax element indicating a frame coding mode for the entry point key frame and/or a syntax element indicating field types for the first and second coded interlaced video fields.
摘要翻译： 解码器接收入口点关键帧的场起始码。 场起始码指示入口点关键帧中的第一编码隔行扫描视频字段之后的入口点关键帧中的第二编码隔行扫描视频字段，并且指示开始对第二编码交错视频字段进行解码的点。 第一编码隔行视频字段是预测字段，第二编码隔行视频字段是帧内编码字段。 解码器解码第二场而不解码第一场。 字段起始码可以后跟一个字段标题。 解码器可以接收入口点关键帧的帧头。 帧头可以包括指示用于入口点关键帧的帧编码模式的语法元素和/或指示第一和第二编码隔行视频字段的字段类型的语法元素。
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3.发明授权公开(公告)号：US08009739B2
公开(公告)日：2011-08-30
申请号：US10933907
申请日：2004-09-02
CPC分类号： H04N19/16 , H04N19/137 , H04N19/196 , H04N19/46 , H04N19/51 , H04N19/61 , H04N19/70
摘要： Techniques and tools for intensity compensation for interlaced forward-predicted fields are described. For example, a video decoder receives and decodes a variable length code that indicates which of two reference fields for an interlaced forward-predicted field use intensity compensation (e.g., both, only the first, or only the second). The decoder performs intensity compensation on each of the two reference fields that uses intensity compensation. A video encoder performs corresponding intensity estimation/compensation and signaling.
摘要翻译： 描述了用于交错前向预测场的强度补偿的技术和工具。 例如，视频解码器接收并解码可变长度码，该可变长度码指示用于隔行的前向预测场使用强度补偿（例如，两者，仅第一个，或仅第二个）的两个参考场中的哪一个。 解码器对使用强度补偿的两个参考场中的每一个进行强度补偿。 视频编码器执行相应的强度估计/补偿和信令。
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公开(公告)号：US07839930B2
公开(公告)日：2010-11-23
申请号：US10882739
申请日：2004-06-30
申请人： Thomas W. Holcomb , Regis J. Crinon , Timothy E. Onders , Sridhar Srinivasan , Shankar Regunathan
发明人： Thomas W. Holcomb , Regis J. Crinon , Timothy E. Onders , Sridhar Srinivasan , Shankar Regunathan
CPC分类号： H04N21/8455 , H04N21/23424 , H04N21/44016
摘要： Techniques and tools for coding/decoding of digital video, and in particular, for determining, signaling and detecting entry points in video streams are described. Techniques and tools described herein are used to embed entry point indicator information in the bitstream that receivers, editing systems, insertion systems, and other systems can use to detect valid entry points in compressed video.
摘要翻译： 描述了用于数字视频的编码/解码的技术和工具，特别是用于确定，信令和检测视频流中的入口点的技术和工具。 这里描述的技术和工具用于将入口点指示符信息嵌入比特流中，接收器，编辑系统，插入系统和其他系统可以用来检测压缩视频中的有效入口点。
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公开(公告)号：US07609762B2
公开(公告)日：2009-10-27
申请号：US10989843
申请日：2004-11-15
CPC分类号： H04N21/23424 , H04N19/44 , H04N19/70 , H04N21/44016 , H04N21/8455
摘要： A video decoder receives an entry point key frame comprising first and second interlaced video fields and decodes a first syntax element comprising information (e.g., frame coding mode) for the entry point key frame at a first syntax level (e.g., frame level) in a bitstream. The first interlaced video field is a predicted field, and the second interlaced video field is an intra-coded field. The information for the entry point key frame can be a frame coding mode (e.g., field interlace) for the entry point key frame. The decoder can decode a second syntax element at the first syntax level comprising second information (e.g., field type for each of the first and second interlaced video fields) for the entry point key frame.
摘要翻译： 视频解码器接收包括第一和第二隔行视频字段的入口点关键帧，并且解码第一语法元素，该第一语法元素包括第一语法元素，其包括用于入口点关键帧的信息（例如，帧编码模式） 比特流。 第一隔行视频字段是预测字段，第二隔行视频字段是帧内编码字段。 入口点关键帧的信息可以是用于入口点关键帧的帧编码模式（例如，场交错）。 解码器可以解码第一语法级别的第二语法元素，其包括用于入口点关键帧的第二信息（例如，用于第一和第二隔行扫描视频字段中的每一个的场类型）。
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公开(公告)号：US08855202B2
公开(公告)日：2014-10-07
申请号：US13191335
申请日：2011-07-26
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。
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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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8.发明授权Adaptive truncation of transform coefficient data in a transform-based digital media codec 有权在基于变换的数字媒体编解码器中自适应截断变换系数数据公开(公告)号：US08184710B2
公开(公告)日：2012-05-22
申请号：US11772077
申请日：2007-06-29
CPC分类号： H04N19/34 , H04N19/13 , H04N19/184 , H04N19/60
摘要： A block transform-based digital media codec has a signaling scheme and bitstream syntax to flexibly signal that truncation of less significant information bits of transform coefficients coded as an optional layer of the bitstream has been performed adaptively per region or tile of the image.
摘要翻译： 基于块变换的数字媒体编解码器具有信令方案和比特流语法，以灵活地表示每个图像的每个区域或瓦片自适应地执行编码为比特流的可选层的变换系数的较不重要的信息比特的截断。
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公开(公告)号：US07609767B2
公开(公告)日：2009-10-27
申请号：US10379079
申请日：2003-03-03
IPC分类号： H04N7/18
CPC分类号： H04N19/93 , H04N19/17 , H04N19/186 , H04N19/46 , H04N19/51 , H04N19/517 , H04N19/53 , H04N19/61 , H04N19/70 , H04N19/85
摘要： Techniques and tools for signaling for fading compensation in video processing applications are described. For example, a video encoder performs fading compensation on a reference image, signals that fading compensation is used, and signals fading parameters for the fading compensation. A video decoder receives the signaled information and performs fading compensation on the reference image according to the fading parameters.
摘要翻译： 描述了在视频处理应用中用于衰落补偿信令的技术和工具。 例如，视频编码器对参考图像执行衰落补偿，使用衰落补偿的信号，以及用于衰落补偿的信号衰落参数。 视频解码器接收信号信息，并根据衰落参数对参考图像执行衰落补偿。
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公开(公告)号：US20070036222A1
公开(公告)日：2007-02-15
申请号：US11203007
申请日：2005-08-12
IPC分类号： H04N11/04
CPC分类号： H04N19/14 , H04N19/132 , H04N19/176 , H04N19/46 , H04N19/593 , H04N19/91
摘要： A block transform-based digital media codec efficiently compresses digital media data using block patterns representing whether a block's coefficients are zero- valued, such that their explicit encoding is skipped. Because the block patterns can have widely varying probability distributions, the codec adaptively chooses a prediction mode for modifying the block patterns (e.g., based on spatial prediction, or inverting) to enhance their compression using entropy coding techniques. Further, with high spatial correlation of block patterns, the codec encodes a meta block pattern for a region indicating whether all block patterns of the region represent zero-valued coefficient blocks. In such cases, the codec can then also omit explicitly encoding the block patterns in those regions.
摘要翻译： 基于块变换的数字媒体编解码器使用表示块的系数是否为零值的块模式来有效地压缩数字媒体数据，使得它们的显式编码被跳过。 由于块图案可以具有广泛变化的概率分布，所以编解码器自适应地选择用于修改块模式的预测模式（例如，基于空间预测或反转），以使用熵编码技术增强其压缩。 此外，随着块模式的高空间相关性，编解码器编码用于指示该区域的所有块模式是否表示零值系数块的区域的元块模式。 在这种情况下，编解码器也可以省略对这些区域中的块模式的明确编码。
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