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    • 1. 发明申请
    • METHODS AND APPARATUS FOR ENCODING VIDEO SIGNALS USING MOTION COMPENSATED EXAMPLE-BASED SUPER-RESOLUTION FOR VIDEO COMPRESSION
    • 使用运动补偿示例的超分辨率编码视频信号进行视频压缩的方法和装置
    • US20130163673A1
    • 2013-06-27
    • US13820901
    • 2011-09-09
    • Dong-Qing ZhangMithun George JacobSitaram Bhagavathy
    • Dong-Qing ZhangMithun George JacobSitaram Bhagavathy
    • H04N7/26
    • H04N19/85H04N19/132H04N19/14H04N19/176H04N19/44H04N19/46H04N19/587H04N19/61
    • Methods and apparatus are provided for encoding video signals using motion compensated example-based super-resolution for video compression. An apparatus includes a motion parameter estimator for estimating motion parameters for an input video sequence having motion. The input video sequence includes a plurality of pictures. The apparatus also includes an image warper for performing a picture warping process that transforms one or more of the plurality of pictures to provide a static version of the input video sequence by reducing an amount of the motion based on the motion parameters. The apparatus further includes an example-based super-resolution processor for performing example-based super-resolution to generate one or more high-resolution replacement patch pictures from the static version of the video sequence. The one or more high-resolution replacement patch pictures are for replacing one or more low-resolution patch pictures during a reconstruction of the input video sequence.
    • 提供了使用用于视频压缩的基于运动补偿的基于示例的超分辨率对视频信号进行编码的方法和装置。 一种装置包括用于估计具有运动的输入视频序列的运动参数的运动参数估计器。 输入视频序列包括多个图像。 该装置还包括图像整形器,用于执行图像变形处理,其通过基于运动参数减少运动量来变换多个图像中的一个或多个以提供输入视频序列的静态版本。 该装置还包括基于示例的超分辨率处理器,用于执行基于示例的超分辨率以从视频序列的静态版本生成一个或多个高分辨率替换补丁图像。 一个或多个高分辨率替换贴片图片用于在重建输入视频序列期间替换一个或多个低分辨率贴片图像。
    • 6. 发明申请
    • RECOVERING A PRUNED VERSION OF A PICTURE IN A VIDEO SEQUENCE FOR EXAMPLE-BASED DATA PRUNING USING INTRA-FRAME PATCH SIMILARITY
    • US20130170746A1
    • 2013-07-04
    • US13821424
    • 2011-09-09
    • Dong-Qing ZhangSitaram BhagavathyShan He
    • Dong-Qing ZhangSitaram BhagavathyShan He
    • G06T5/00
    • H04N19/85G06T5/001H04N19/132H04N19/14H04N19/176H04N19/196H04N19/44H04N19/46H04N19/463H04N19/587H04N19/59H04N19/593H04N19/61H04N19/97
    • Method and apparatus for recovering a pruned version of a picture in a video sequence are disclosed. The apparatus includes a divider for dividing the pruned version of the picture into a plurality of non-overlapping blocks. The apparatus also includes a metadata decoder for decoding metadata for use in recovering the pruned version of the picture. The apparatus further includes a patch library creator for creating a patch library from a reconstructed version of the picture. The patch library includes a plurality of high resolution replacement patches for replacing the one or more pruned blocks during a recovery of the pruned version of the picture. The apparatus additionally includes a search and replacement device for performing a searching process using the metadata to find a corresponding patch for a respective one of the one or more pruned blocks from among the plurality of non-overlapping blocks and replace the respective one of the one or more pruned blocks with the corresponding patch. The signature is respectively created for each of the one or more pruned blocks, and the pruned version of the picture is recovered by comparing respective distance metrics from signatures for each of the plurality of high resolution patches to signatures for each of the one or more pruned blocks, sorting the respective distance metrics to obtain a rank list for each of the one or more pruned blocks, wherein a rank number in the rank list for a particular one of the one or more pruned blocks is used to retrieve a corresponding one of the plurality of high resolution patches in the patch library to be used to replace the particular one of the one or more pruned blocks. A patch dependency graph having a plurality of nodes and a plurality of edges is used to recover the pruned version of the picture. Each of the plurality of nodes represents a respective one of the plurality of overlapping blocks, and each of the plurality of edges represents a respective dependency of at least the respective one of the plurality of overlapping blocks.
    • 7. 发明申请
    • VIDEO DECODING USING EXAMPLE-BASED DATA PRUNING
    • 使用基于示例的数据预处理的视频解码
    • US20130163679A1
    • 2013-06-27
    • US13821283
    • 2011-09-09
    • Dong-Qing ZhangSitaram Bhagavathy
    • Dong-Qing ZhangSitaram Bhagavathy
    • H04N7/26
    • H04N19/85H04N19/132H04N19/14H04N19/176H04N19/44H04N19/46H04N19/587H04N19/61
    • Methods and apparatus are provided for decoding video signals using example-based data pruning for improved video compression efficiency. An apparatus for recovering a pruned version of a picture in a video sequence includes a divider for dividing the pruned version of the picture into a plurality of non-overlapping blocks, a metadata decoder for decoding metadata for use in recovering the pruned version of the picture, and a patch library creator for creating a patch library from a reconstructed version of the picture. The patch library includes a plurality of high-resolution replacement patches for replacing the one or more pruned blocks during a recovery of the pruned version of the picture. The apparatus further includes a search and replacement device for performing a searching process using the metadata to find a corresponding patch for a respective one of the one or more pruned blocks from among the plurality of non-overlapping blocks and replace the respective one of the one or more pruned blocks with the corresponding patch.
    • 提供了使用基于示例的数据剪枝来解码视频信号以提高视频压缩效率的方法和装置。 用于在视频序列中恢复图像的修剪版本的装置包括用于将剪辑版本划分成多个非重叠块的分割器,用于解码元数据的元数据解码器,用于恢复图像的修剪版本 以及用于从图像的重构版本创建补丁库的补丁库创建器。 补丁库包括多个高分辨率替换补丁,用于在恢复修剪版本的图片期间替换一个或多个修剪块。 所述装置还包括搜索和替换装置,用于使用所述元数据执行搜索处理,以从所述多个非重叠块中的所述一个或多个修剪块中的相应一个查找相应的补丁,并将所述一个或多个修剪块中的相应的一个替换 或更多修剪的块与相应的补丁。
    • 10. 发明授权
    • Methods and apparatus for reducing vector quantization error through patch shifting
    • 减少矢量量化误差的方法和装置
    • US09420291B2
    • 2016-08-16
    • US13576848
    • 2011-02-01
    • Dong-Qing ZhangJoan LlachSitaram Bhagavathy
    • Dong-Qing ZhangJoan LlachSitaram Bhagavathy
    • H04N7/12H04N19/105G06T1/00H04N19/139H04N19/593H04N19/14H04N19/94H04N19/59
    • H04N19/105G06T1/00H04N19/139H04N19/14H04N19/59H04N19/593H04N19/94
    • Methods and apparatus are provided for reducing vector quantization error through patch shifting. A method generates, from an input video sequence, one of more high resolution replacement patches, the one or more high resolution replacement patches for replacing one or more low resolution patches during a reconstruction of the input video sequence. This generating step generates the one or more high resolution replacement patches using data corresponding to a patch spatial shifting process, the patch spatial shifting process for reducing jittery artifacts caused by a motion-induced vector quantization error in the one or more high resolution replacement patches, the data for at least deriving a patch size of the one or more high resolution replacement patches such that the one or more high resolution replacement patches are generated to have the patch size greater than a patch size of the one or more low resolution patches in order to be suitable for use in the patch spatial shifting process.
    • 提供了通过补片移位来减少矢量量化误差的方法和装置。 一种方法从输入视频序列生成更多高分辨率替换贴片之一,该一个或多个高分辨率替换贴片用于在重建输入视频序列期间替换一个或多个低分辨率贴片。 该生成步骤使用与贴片空间移位处理对应的数据来生成一个或多个高分辨率替换贴片,该贴片空间移位处理用于减少由一个或多个高分辨率替换贴片中的运动引起的矢量量化误差引起的抖动伪像, 所述数据用于至少导出所述一个或多个高分辨率替换补丁的补丁大小,使得生成所述一个或多个高分辨率替换补丁以使所述补丁大小大于所述一个或多个低分辨率补丁的补丁大小顺序 适用于贴片空间位移过程。