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    Signaling for fading compensation
    11.
    发明授权
    Signaling for fading compensation 有权
    信号衰落补偿

    公开(公告)号：US07609767B2

    公开(公告)日：2009-10-27

    申请号：US10379079

    申请日：2003-03-03

    Applicant: Sridhar Srinivasan ,  Shankar Regunathan

    Inventor： Sridhar Srinivasan ,  Shankar Regunathan

    IPC: H04N7/18

    CPC classification number: H04N19/93 ,  H04N19/17 ,  H04N19/186 ,  H04N19/46 ,  H04N19/51 ,  H04N19/517 ,  H04N19/53 ,  H04N19/61 ,  H04N19/70 ,  H04N19/85

    Abstract: 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.

    Abstract translation: 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。

    Non-zero coefficient block pattern coding
    13.
    发明申请
    Non-zero coefficient block pattern coding 有权
    非零系数块模式编码

    公开(公告)号：US20070036222A1

    公开(公告)日：2007-02-15

    申请号：US11203007

    申请日：2005-08-12

    Applicant: Sridhar Srinivasan ,  Chengjie Tu ,  Shankar Regunathan

    Inventor： Sridhar Srinivasan ,  Chengjie Tu ,  Shankar Regunathan

    IPC: H04N11/04

    CPC classification number: H04N19/14 ,  H04N19/132 ,  H04N19/176 ,  H04N19/46 ,  H04N19/593 ,  H04N19/91

    Abstract: 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.

    Abstract translation: 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。

    Slice-layer in video codec
    14.
    发明授权
    Slice-layer in video codec 有权
    视频编解码器中的切片层

    公开(公告)号：US07162093B2

    公开(公告)日：2007-01-09

    申请号：US10933960

    申请日：2004-09-03

    Applicant: Shankar Regunathan ,  Pohsiang Hsu ,  Ce Wang ,  Chih-Lung Lin ,  Jie Liang ,  Sridhar Srinivasan

    Inventor： Shankar Regunathan ,  Pohsiang Hsu ,  Ce Wang ,  Chih-Lung Lin ,  Jie Liang ,  Sridhar Srinivasan

    IPC: G06K9/36 ,  G06K9/46

    CPC classification number: H04N19/86 ,  H04N19/105 ,  H04N19/107 ,  H04N19/166 ,  H04N19/174 ,  H04N19/46 ,  H04N19/61 ,  H04N19/70 ,  H04N19/80 ,  H04N19/82

    Abstract: A video encoder/decoder utilizes a bistream syntax that provides an independently decodable, partial picture unit, which may be in the form of a unit containing one or more contiguous rows of macroblocks (called a slice). This slice layer provides a flexible combination of error-resilience and compression efficiency. The slice layer encodes an efficient addressing mechanism (e.g., a syntax element specifying a beginning macroblock row of the slice layer), as well as an efficient mechanism to optionally retransmit picture header information. The slice layer provides decoding and reconstruction independence by disabling all forms of prediction, overlap and loop-filtering across slice-boundaries. This permits a slice coded in intra-mode to be reconstructed error-free, irrespective of errors in other regions of the picture.

    Abstract translation: 视频编码器/解码器利用提供可独立解码的部分图像单元的双向串行语法，其可以是包含一个或多个连续的宏块行（称为切片）的单元的形式。 该切片层提供了弹性和压缩效率的灵活组合。 切片层对有效的寻址机制（例如，指定切片层的开始宏块行的语法元素）进行编码，以及有选择地重传图像头信息的机制。 切片层通过禁用跨片段的所有形式的预测，重叠和循环滤波来提供解码和重建独立性。 这允许在帧内编码的片段无错重构，而与图像的其他区域中的错误无关。

    Conversion operations in scalable video encoding and decoding
    16.
    发明授权
    Conversion operations in scalable video encoding and decoding 有权
    可扩展视频编码和解码中的转换操作

    公开(公告)号：US09571856B2

    公开(公告)日：2017-02-14

    申请号：US12197922

    申请日：2008-08-25

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

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

    IPC: H04N7/12 ,  H04N19/59 ,  H04N19/149 ,  H04N19/117 ,  H04N19/186 ,  H04N19/187 ,  H04N19/33 ,  H04N19/86 ,  H04N19/40

    CPC classification number: H04N19/59 ,  H04N19/117 ,  H04N19/149 ,  H04N19/186 ,  H04N19/187 ,  H04N19/33 ,  H04N19/40 ,  H04N19/86

    Abstract: Techniques and tools for conversion operations between modules in a scalable video encoding tool or scalable video decoding tool are described. For example, given reconstructed base layer video in a low resolution format (e.g., 4:2:0 video with 8 bits per sample) an encoding tool and decoding tool adaptively filter the reconstructed base layer video and upsample its sample values to a higher sample depth (e.g., 10 bits per sample). The tools also adaptively scale chroma samples to a higher chroma sampling rate (e.g., 4:2:2). The adaptive filtering and chroma scaling help reduce energy in inter-layer residual video by making the reconstructed base layer video closer to input video, which typically makes compression of the inter-layer residual video more efficient. The encoding tool also remaps sample values of the inter-layer residual video to adjust dynamic range before encoding, and the decoding tool performs inverse remapping after decoding.

    Abstract translation: 描述了可扩展视频编码工具或可扩展视频解码工具中的模块之间的转换操作的技术和工具。 例如，给定以低分辨率格式的重建基层视频（例如，具有每个样本8位的4：2：0视频），编码工具和解码工具自适应地过滤重建的基层视频并将其样本值上采样到较高的样本 深度（例如每个样本10位）。 这些工具还可以自适应地将色度样本缩放到更高的色度采样率（例如4：2：2）。 自适应滤波和色度缩放有助于通过使重构的基本层视频更接近输入视频来减少层间残留视频中的能量，这通常使得层间残留视频的压缩更有效。 编码工具还重新映射层间残差视频的采样值，以便在编码之前调整动态范围，并且解码工具在解码之后执行反向重新映射。

    Non-zero coefficient block pattern coding
    19.
    发明授权
    Non-zero coefficient block pattern coding 有权
    非零系数块模式编码

    公开(公告)号：US09077960B2

    公开(公告)日：2015-07-07

    申请号：US11203007

    申请日：2005-08-12

    Applicant: Sridhar Srinivasan ,  Chengjie Tu ,  Shankar Regunathan

    Inventor： Sridhar Srinivasan ,  Chengjie Tu ,  Shankar Regunathan

    IPC: H04N7/12 ,  H04N19/14 ,  H04N19/132 ,  H04N19/176 ,  H04N19/593 ,  H04N19/46 ,  H04N19/91

    CPC classification number: H04N19/14 ,  H04N19/132 ,  H04N19/176 ,  H04N19/46 ,  H04N19/593 ,  H04N19/91

    Abstract: 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.

    Abstract translation: 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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