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公开(公告)号：US20050196060A1
公开(公告)日：2005-09-08
申请号：US11068160
申请日：2005-03-01
申请人： Demin Wang , Liang Zhang , Andre Vincent
发明人： Demin Wang , Liang Zhang , Andre Vincent
CPC分类号： H04N19/63 , H04N19/124 , H04N19/13 , H04N19/61 , H04N19/619
摘要： A curved wavelet transform and a related image/video compression system are disclosed. The curved wavelet transform (CWT) is carried out by applying one-dimensional (1-D) wavelet filters along curves, rather than along only horizontal and vertical directions. The image/video compression system includes a curve determination unit, a curved wavelet transform unit, a wavelet coefficient quantization unit, a wavelet coefficient coding unit, and a curve coding unit. The quantization and coding of the wavelet coefficients are related to the curves. In one embodiment, recursive wavelet filters are used for inverse wavelet decomposition. The system provides higher compression capability than conventional wavelet-based image compression systems.
摘要翻译： 公开了一种弯曲小波变换和相关图像/视频压缩系统。 曲线小波变换（CWT）通过沿着曲线应用一维（1-D）小波滤波器而不是沿着水平和垂直方向进行。 图像/视频压缩系统包括曲线确定单元，弯曲小波变换单元，小波系数量化单元，小波系数编码单元和曲线编码单元。 小波系数的量化和编码与曲线相关。 在一个实施例中，递归小波滤波器用于逆小波分解。 该系统比传统的基于小波的图像压缩系统提供更高的压缩能力。
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公开(公告)号：US07418144B2
公开(公告)日：2008-08-26
申请号：US11068160
申请日：2005-03-01
申请人： Demin Wang , Liang Zhang , Andre Vincent
发明人： Demin Wang , Liang Zhang , Andre Vincent
CPC分类号： H04N19/63 , H04N19/124 , H04N19/13 , H04N19/61 , H04N19/619
摘要： A curved wavelet transform and a related image/video compression system are disclosed. The curved wavelet transform (CWT) is carried out by applying one-dimensional (1-D) wavelet filters along curves, rather than along only horizontal and vertical directions. The image/video compression system includes a curve determination unit, a curved wavelet transform unit, a wavelet coefficient quantization unit, a wavelet coefficient coding unit, and a curve coding unit. The quantization and coding of the wavelet coefficients are related to the curves. In one embodiment, recursive wavelet filters are used for inverse wavelet decomposition. The system provides higher compression capability than conventional wavelet-based image compression systems.
摘要翻译： 公开了一种弯曲小波变换和相关图像/视频压缩系统。 曲线小波变换（CWT）通过沿着曲线应用一维（1-D）小波滤波器而不是沿着水平和垂直方向进行。 图像/视频压缩系统包括曲线确定单元，弯曲小波变换单元，小波系数量化单元，小波系数编码单元和曲线编码单元。 小波系数的量化和编码与曲线相关。 在一个实施例中，递归小波滤波器用于逆小波分解。 该系统比传统的基于小波的图像压缩系统提供更高的压缩能力。
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3.发明授权Learning filters for enhancing the quality of block coded still and video images 失效学习过滤器，用于提高块编码静止图像和视频图像的质量公开(公告)号：US08204128B2
公开(公告)日：2012-06-19
申请号：US12184671
申请日：2008-08-01
申请人： Gregory Huchet , Jean-Yves Chouinard , Demin Wang , Andre Vincent
发明人： Gregory Huchet , Jean-Yves Chouinard , Demin Wang , Andre Vincent
IPC分类号： H04N7/12
CPC分类号： H04N19/86 , H04N19/117 , H04N19/154 , H04N19/176 , H04N19/182 , H04N19/46 , H04N19/61 , H04N19/82
摘要： The invention relates to a method and an apparatus for reducing blocking artifacts in block-wise coding of still and video images. A learning filter generator is provided at the image encoder for generating a set of filters and associated filtering rules for filtering cross-boundary image patterns based on representative original and decoded training images using a supervised machine learning algorithm. An adaptive filter at the image decoder receives the generated filters and associated filtering rules and performs locally adaptive filtering in accordance with the received filtering rules.
摘要翻译： 本发明涉及一种用于减少静止图像和视频图像的块状编码中的块伪影的方法和装置。 在图像编码器上设置学习滤波器发生器，用于使用监督机器学习算法基于代表性的原始和解码的训练图像来生成一组滤波器和相关联的滤波规则，用于过滤跨边界图像模式。 图像解码器处的自适应滤波器接收生成的滤波器和相关联的滤波规则，并根据接收到的滤波规则执行本地自适应滤波。
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公开(公告)号：US20110069237A1
公开(公告)日：2011-03-24
申请号：US12923476
申请日：2010-09-23
申请人： Demin Wang , Andre Vincent , Philip Blanchfield , Robert Klepko
发明人： Demin Wang , Andre Vincent , Philip Blanchfield , Robert Klepko
IPC分类号： H04N5/14
CPC分类号： H04N5/145 , G06T3/4007 , H04N13/111
摘要： Methods of image interpolation disclosed herein include a method of irregular-grid expanded-block weighted motion compensation (IEWMC) and a method of block-wise directional hole interpolation (BDHI). The IEWMC can be used with unidirectional motion or disparity trajectories. The IEWMC can be applied in both forward and backward directions, and the interpolated images resulting from IEWMC application can be superimposed, or averaged, to reduce the blocking artifacts and handle the holes and overlaps. The BDHI takes into account the orientation of local edges and textures when filling the holes, which results in a sharper interpolated image.
摘要翻译： 本文公开的图像插值方法包括不规则网格扩展块加权运动补偿（IEWMC）的方法和块定向孔插入（BDHI）的方法。 IEWMC可以用于单向运动或视差轨迹。 IEWMC可以在向前和向后两个方向上应用，并且由IEWMC应用产生的内插图像可以叠加或平均，以减少块伪影并处理孔和重叠。 BDHI在填充孔时考虑到局部边缘和纹理的方向，这导致更清晰的内插图像。
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5.发明申请Learning Filters For Enhancing The Quality Of Block Coded Still And Video Images 失效学习过滤器用于提高块编码静态图像和视频图像的质量公开(公告)号：US20090034622A1
公开(公告)日：2009-02-05
申请号：US12184671
申请日：2008-08-01
申请人： Gregory Huchet , Jean-Yves Chouinard , Demin Wang , Andre Vincent
发明人： Gregory Huchet , Jean-Yves Chouinard , Demin Wang , Andre Vincent
CPC分类号： H04N19/86 , H04N19/117 , H04N19/154 , H04N19/176 , H04N19/182 , H04N19/46 , H04N19/61 , H04N19/82
摘要： The invention relates to a method and an apparatus for reducing blocking artifacts in block-wise coding of still and video images. A learning filter generator is provided at the image encoder for generating a set of filters and associated filtering rules for filtering cross-boundary image patterns based on representative original and decoded training images using a supervised machine learning algorithm. An adaptive filter at the image decoder receives the generated filters and associated filtering rules and performs locally adaptive filtering in accordance with the received filtering rules.
摘要翻译： 本发明涉及一种用于减少静止图像和视频图像的块状编码中的块伪影的方法和装置。 在图像编码器上设置学习滤波器发生器，用于使用监督机器学习算法基于代表性的原始和解码的训练图像来生成一组滤波器和相关联的滤波规则，用于过滤跨边界图像模式。 图像解码器处的自适应滤波器接收生成的滤波器和相关联的滤波规则，并根据接收到的滤波规则执行本地自适应滤波。
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公开(公告)号：US20100166057A1
公开(公告)日：2010-07-01
申请号：US12648444
申请日：2009-12-29
申请人： Gregory Huchet , Jean-Yves Chouinard , Demin Wang , Andre Vincent
发明人： Gregory Huchet , Jean-Yves Chouinard , Demin Wang , Andre Vincent
IPC分类号： H04N7/12
CPC分类号： H04N19/11 , H04N19/395 , H04N19/46
摘要： The invention relates to improving the performance of DVC systems using a differential adaptive-base representation of video data to be transmitted, wherein frame data are truncated to the least significant digits in a base-B numeral system, wherein the base B is adaptively determined at the DVC receiver based on a side information error estimate.
摘要翻译： 本发明涉及使用要发送的视频数据的差分自适应基础表示来提高DVC系统的性能，其中帧数据被截断为基B数字系统中的最低有效数字，其中基本B被自适应地确定在 DVC接收机基于侧信息误差估计。
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公开(公告)号：US08670075B2
公开(公告)日：2014-03-11
申请号：US12923476
申请日：2010-09-23
申请人： Demin Wang , Andre Vincent , Philip Blanchfield , Robert Klepko
发明人： Demin Wang , Andre Vincent , Philip Blanchfield , Robert Klepko
CPC分类号： H04N5/145 , G06T3/4007 , H04N13/111
摘要： Methods of image interpolation disclosed herein include a method of irregular-grid expanded-block weighted motion compensation (IEWMC) and a method of block-wise directional hole interpolation (BDHI). The IEWMC can be used with unidirectional motion or disparity trajectories. The IEWMC can be applied in both forward and backward directions, and the interpolated images resulting from IEWMC application can be superimposed, or averaged, to reduce the blocking artifacts and handle the holes and overlaps. The BDHI takes into account the orientation of local edges and textures when filling the holes, which results in a sharper interpolated image.
摘要翻译： 本文公开的图像插值方法包括不规则网格扩展块加权运动补偿（IEWMC）的方法和块定向孔插入（BDHI）的方法。 IEWMC可以用于单向运动或视差轨迹。 IEWMC可以在向前和向后两个方向上应用，并且由IEWMC应用产生的内插图像可以叠加或平均，以减少块伪影并处理孔和重叠。 BDHI在填充孔时考虑到局部边缘和纹理的方向，这导致更清晰的内插图像。
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公开(公告)号：US20120294365A1
公开(公告)日：2012-11-22
申请号：US13435148
申请日：2012-03-30
申请人： Dong ZHENG , Demin Wang , Liang Zhang
发明人： Dong ZHENG , Demin Wang , Liang Zhang
CPC分类号： H04N19/182 , H04N19/11 , H04N19/176
摘要： A method and system for image and video encoding and decoding is disclosed. A plurality of macro-blocks of pixels are defined in the image to be encoded, for subsequent block-by-block encoding and decoding. A node-cell structure of pixels is individually defined for each macro-block. The node pixels are encoded first. Then, the cell pixels are encoded using the decoded node pixels as a reference. This allows increasing macro-block size without a significant degradation of pixel encoding quality.
摘要翻译： 公开了一种用于图像和视频编码和解码的方法和系统。 在要编码的图像中定义多个像素的宏块，用于随后的逐块编码和解码。 每个宏块分别定义像素的节点单元结构。 首先对节点像素进行编码。 然后，使用解码的节点像素作为参考来对单元像素进行编码。 这允许增加宏块大小而不会显着降低像素编码质量。
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9.发明申请公开(公告)号：US20100232709A1
公开(公告)日：2010-09-16
申请号：US12633463
申请日：2009-12-08
申请人： Liang Zhang , Demin Wang , Houman Rastgar , André Vincent
发明人： Liang Zhang , Demin Wang , Houman Rastgar , André Vincent
IPC分类号： G06K9/46
摘要： The invention relates to a method for estimating an image relation model for two or more related images based on a plurality of point correspondences. The method includes using a weighted random sampling algorithm to repeatedly draw subsets of point correspondences for generating model estimates, evaluating said model estimates for the full plurality of the point correspondences, and updating weights associated with each of the point correspondences in the random sampling algorithm based on information obtained in said evaluating.
摘要翻译： 本发明涉及一种用于基于多个点对应度来估计两个或多个相关图像的图像关系模型的方法。 该方法包括使用加权随机抽样算法重复绘制点对应子集用于生成模型估计，评估所述多个点对应关系的所述模型估计，以及基于随机抽样算法中的每个点对应关系更新权重 对所述评估中获得的信息。
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10.发明授权公开(公告)号：US08411966B2
公开(公告)日：2013-04-02
申请号：US12633463
申请日：2009-12-08
申请人： Liang Zhang , Demin Wang , Houman Rastgar , André Vincent
发明人： Liang Zhang , Demin Wang , Houman Rastgar , André Vincent
摘要： The invention relates to a method for estimating an image relation model for two or more related images based on a plurality of point correspondences. The method includes using a weighted random sampling algorithm to repeatedly draw subsets of point correspondences for generating model estimates, evaluating said model estimates for the full plurality of the point correspondences, and updating weights associated with each of the point correspondences in the random sampling algorithm based on information obtained in said evaluating.
摘要翻译： 本发明涉及一种用于基于多个点对应度来估计两个或多个相关图像的图像关系模型的方法。 该方法包括使用加权随机抽样算法重复绘制点对应子集用于生成模型估计，评估所述多个点对应关系的所述模型估计，以及基于随机抽样算法中的每个点对应关系更新权重 对所述评估中获得的信息。
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