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    Entropy coding/decoding of hierarchically organized data
    51.
    发明授权
    Entropy coding/decoding of hierarchically organized data 有权
    分层组织数据的熵编码/解码

    公开(公告)号：US08406307B2

    公开(公告)日：2013-03-26

    申请号：US12197124

    申请日：2008-08-22

    Applicant: Chengjie Tu ,  Shankar Regunathan ,  Shijun Sun ,  Chih-Lung Lin

    Inventor： Chengjie Tu ,  Shankar Regunathan ,  Shijun Sun ,  Chih-Lung Lin

    IPC: H04N7/12 ,  H03M7/40

    CPC classification number: H04N19/18 ,  H04N19/13 ,  H04N19/147 ,  H04N19/176 ,  H04N19/61

    Abstract: Techniques and tools for encoding and decoding data values that are hierarchically organized are presented. For example, an encoder encodes data as a set that has a hierarchy of subsets with set symbols. In the encoding, the encoder evaluates the data values of the set and selectively encodes a symbol combination code that indicates the set symbols of multiple subsets of the set. Then, for each of the multiple subsets considered as a new set, the encoder selectively repeats the evaluating, selective encoding and selective repetition for the new set. In corresponding decoding, a decoder decodes data encoded as a set that has a hierarchy of subsets with set symbols. In some implementations, the encoding and decoding are adaptive and use a symbol alphabet with nested elements.

    Abstract translation: 呈现用于编码和解码分层组织的数据值的技术和工具。 例如，编码器将数据编码为具有设置符号的子集层次的集合。 在编码中，编码器对集合的数据值进行评估，并选择性地编码指示集合的多个子集的集合符号的符号组合码。 然后，对于被认为是新集合的多个子集中的每一个，编码器选择性地重复新集合的评估，选择性编码和选择性重复。 在相应的解码中，解码器将编码为具有设定符号的子集层次的集合的数据解码。 在一些实现中，编码和解码是自适应的并且使用具有嵌套元素的符号字母表。

    DC coefficient signaling at small quantization step sizes
    53.
    发明授权
    DC coefficient signaling at small quantization step sizes 有权
    小量化步长的直流系数信号

    公开(公告)号：US07738554B2

    公开(公告)日：2010-06-15

    申请号：US10893168

    申请日：2004-07-17

    Applicant: Chih-Lung Lin ,  Shankar Regunathan ,  Sridhar Srinivasan

    Inventor： Chih-Lung Lin ,  Shankar Regunathan ,  Sridhar Srinivasan

    IPC: H04N7/12 ,  H04N11/02 ,  H04N11/04

    CPC classification number: 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

    Abstract: 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.

    Abstract translation: 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。

    TECHNIQUE TO ENABLE EFFICIENT ADAPTIVE STREAMING AND TRANSCODING OF VIDEO AND OTHER SIGNALS
    55.
    发明申请
    TECHNIQUE TO ENABLE EFFICIENT ADAPTIVE STREAMING AND TRANSCODING OF VIDEO AND OTHER SIGNALS 有权
    实现有效自适应流动和视频和其他信号的转换技术

    公开(公告)号：US20100104025A1

    公开(公告)日：2010-04-29

    申请号：US12562583

    申请日：2009-09-18

    Applicant: Kenneth Rose ,  Rui Zhang ,  Shankar Regunathan

    Inventor： Kenneth Rose ,  Rui Zhang ,  Shankar Regunathan

    IPC: H04N7/26

    CPC classification number: H04N21/2404 ,  H04N19/102 ,  H04N19/147 ,  H04N19/177 ,  H04N19/188 ,  H04N19/19 ,  H04N19/194 ,  H04N19/30 ,  H04N19/40 ,  H04N19/61 ,  H04N19/65 ,  H04N19/67 ,  H04N19/89 ,  H04N21/234 ,  H04N21/235 ,  H04N21/435 ,  H04N21/6377 ,  H04N21/6473 ,  H04N21/64769 ,  H04N21/658

    Abstract: A method is described for efficiently determining total end-to-end distortion of a pre-compressed data stream, such as video streams or other media streams, at the time of delivery over a lossy-network, and for providing adaptive error-resilient delivery schemes based on distortion estimates. The methods can be utilized with single or multilayer packet streams and are particularly well suited for video streams. By way of example, distortion estimates are performed by generating side-information at the time of data stream compression, wherein the side-information is used in conjunction with information about the network status to determine an estimated distortion for the group of packets when the data stream is transported over the network to a destination end. This estimation may be utilized within described resiliency techniques in which the error correction mechanism is selected in response to the estimated distortion, which may be additionally refined in reference to cost factors.

    Abstract translation: 描述了一种用于在通过有损网络传送时有效地确定预压缩数据流（例如视频流或其他媒体流）的总端对端失真的方法，并且用于提供自适应的错误弹性传递 基于失真估计的方案。 这些方法可以用于单个或多个分组流，并且特别适合于视频流。 作为示例，通过在数据流压缩时生成旁侧信息来执行失真估计，其中，侧信息结合关于网络状态的信息使用，以确定数据组的估计失真 流通过网络传输到目的地端。 可以在所述的弹性技术中使用该估计，其中响应于估计的失真来选择纠错机制，这可以参考成本因素进一步细化。

    ENTROPY CODING/DECODING OF HIERARCHICALLY ORGANIZED DATA
    56.
    发明申请
    ENTROPY CODING/DECODING OF HIERARCHICALLY ORGANIZED DATA 有权
    熵编码/解码等级组织数据

    公开(公告)号：US20100046626A1

    公开(公告)日：2010-02-25

    申请号：US12197124

    申请日：2008-08-22

    Applicant: Chengjie Tu ,  Shankar Regunathan ,  Shijun Sun ,  Chih-Lung Lin

    Inventor： Chengjie Tu ,  Shankar Regunathan ,  Shijun Sun ,  Chih-Lung Lin

    IPC: H04N7/30 ,  H04N7/26

    CPC classification number: H04N19/18 ,  H04N19/13 ,  H04N19/147 ,  H04N19/176 ,  H04N19/61

    Abstract: Techniques and tools for encoding and decoding data values that are hierarchically organized are presented. For example, an encoder encodes data as a set that has a hierarchy of subsets with set symbols. In the encoding, the encoder evaluates the data values of the set and selectively encodes a symbol combination code that indicates the set symbols of multiple subsets of the set. Then, for each of the multiple subsets considered as a new set, the encoder selectively repeats the evaluating, selective encoding and selective repetition for the new set. In corresponding decoding, a decoder decodes data encoded as a set that has a hierarchy of subsets with set symbols. In some implementations, the encoding and decoding are adaptive and use a symbol alphabet with nested elements.

    Abstract translation: 呈现用于编码和解码分层组织的数据值的技术和工具。 例如，编码器将数据编码为具有设置符号的子集层次的集合。 在编码中，编码器对集合的数据值进行评估，并选择性地编码指示集合的多个子集的集合符号的符号组合码。 然后，对于被认为是新集合的多个子集中的每一个，编码器选择性地重复新集合的评估，选择性编码和选择性重复。 在相应的解码中，解码器将编码为具有设定符号的子集层次的集合的数据解码。 在一些实现中，编码和解码是自适应的并且使用具有嵌套元素的符号字母表。

    Adaptive quantization for enhancement layer video coding
    57.
    发明申请
    Adaptive quantization for enhancement layer video coding 有权
    增强层视频编码的自适应量化

    公开(公告)号：US20090296808A1

    公开(公告)日：2009-12-03

    申请号：US12156864

    申请日：2008-06-03

    Applicant: Shankar Regunathan ,  Shijun Sun ,  Chengjie Tu ,  Chih-Lung Lin

    Inventor： Shankar Regunathan ,  Shijun Sun ,  Chengjie Tu ,  Chih-Lung Lin

    IPC: H04N7/26

    CPC classification number: H04N19/126 ,  H04N19/124 ,  H04N19/172 ,  H04N19/176 ,  H04N19/184 ,  H04N19/186 ,  H04N19/187 ,  H04N19/196 ,  H04N19/197 ,  H04N19/34 ,  H04N19/46 ,  H04N19/463 ,  H04N19/593 ,  H04N19/61 ,  H04N19/70

    Abstract: Techniques and tools for encoding enhancement layer video with quantization that varies spatially and/or between color channels are presented, along with corresponding decoding techniques and tools. For example, an encoding tool determines whether quantization varies spatially over a picture, and the tool also determines whether quantization varies between color channels in the picture. The tool signals quantization parameters for macroblocks in the picture in an encoded bit stream. In some implementations, to signal the quantization parameters, the tool predicts the quantization parameters, and the quantization parameters are signaled with reference to the predicted quantization parameters. A decoding tool receives the encoded bit stream, predicts the quantization parameters, and uses the signaled information to determine the quantization parameters for the macroblocks of the enhancement layer video. The decoding tool performs inverse quantization that can vary spatially and/or between color channels.

    Abstract translation: 提出了用于在空间上和/或颜色通道之间变化的具有量化的增强层视频编码的技术和工具，以及相应的解码技术和工具。 例如，编码工具确定量化是否在图像上空间上变化，并且该工具还确定量化是否在图像中的颜色通道之间变化。 该工具在编码比特流中针对图像中的宏块发送量化参数。 在一些实现中，为了发信号通知量化参数，该工具预测量化参数，参考预测量化参数来发信号通知量化参数。 解码工具接收编码比特流，预测量化参数，并使用信号信息确定增强层视频的宏块的量化参数。 解码工具执行在空间上和/或颜色通道之间变化的逆量化。

    Signaling for entry point frames with predicted first field
    58.
    发明授权
    Signaling for entry point frames with predicted first field 有权
    对具有预测的第一场的入口点信号进行信令

    公开(公告)号：US07609762B2

    公开(公告)日：2009-10-27

    申请号：US10989843

    申请日：2004-11-15

    Applicant: Regis J. Crinon ,  Thomas W. Holcomb ,  Shankar Regunathan ,  Sridhar Srinivasan

    Inventor： Regis J. Crinon ,  Thomas W. Holcomb ,  Shankar Regunathan ,  Sridhar Srinivasan

    IPC: H04N7/32 ,  H04N1/415

    CPC classification number: H04N21/23424 ,  H04N19/44 ,  H04N19/70 ,  H04N21/44016 ,  H04N21/8455

    Abstract: 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.

    Abstract translation: 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）。

    Motion-compensated prediction of inter-layer residuals
    59.
    发明申请
    Motion-compensated prediction of inter-layer residuals 有权
    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

    Applicant: Chengjie Tu ,  Sridhar Srinivasan ,  Shankar Regunathan ,  Shijun Sun ,  Chih-Lung Lin

    Inventor： Chengjie Tu ,  Sridhar Srinivasan ,  Shankar Regunathan ,  Shijun Sun ,  Chih-Lung Lin

    IPC: H04N7/34 ,  H04N7/26

    CPC classification number: H04N19/00442 ,  H04N19/30 ,  H04N19/34 ,  H04N19/61 ,  H04N19/63

    Abstract: 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.

    Abstract translation: 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。

    Scalable video coding and decoding with sample bit depth and chroma high-pass residual layers
    60.
    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

    Applicant: Chengjie Tu ,  Sridhar Srinivasan ,  Shankar Regunathan ,  Shijun Sun

    Inventor： Chengjie Tu ,  Sridhar Srinivasan ,  Shankar Regunathan ,  Shijun Sun

    IPC: H04N7/26

    CPC classification number: H04N19/00315 ,  H04N19/186 ,  H04N19/33 ,  H04N19/36 ,  H04N19/59

    Abstract: 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.

    Abstract translation: 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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