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    Multilayer-based video encoding/decoding method and video encoder/decoder using smoothing prediction
    51.
    发明申请
    Multilayer-based video encoding/decoding method and video encoder/decoder using smoothing prediction 审中-公开
    基于多层的视频编码/解码方法和使用平滑预测的视频编码器/解码器

    公开(公告)号：US20070171969A1

    公开(公告)日：2007-07-26

    申请号：US11519131

    申请日：2006-09-12

    申请人： Woo-jin Han ,  So-young Kim ,  Tammy Lee ,  Kyo-hyuk Lee

    发明人： Woo-jin Han ,  So-young Kim ,  Tammy Lee ,  Kyo-hyuk Lee

    IPC分类号： H04B1/66 ,  H04N11/04

    CPC分类号： H04N19/577 ,  H04N19/31 ,  H04N19/33 ,  H04N19/82

    摘要： A method and apparatus for reducing block artifacts during a residual prediction in a multilayer-based video coding are disclosed. The multilayer-based video encoding method includes obtaining a difference between a predicted block for a second block of a lower layer, which corresponds to a first block included in a current layer, and the second block; adding the obtained difference to a predicted block for the first block; smoothing a third block generated as a result of the addition using a smoothing function; and encoding a difference between the first block and the smoothed third block.

    摘要翻译： 公开了一种用于在基于多层的视频编码中的残差预测期间减少块伪像的方法和装置。 基于多层的视频编码方法包括获得对应于包括在当前层中的第一块的下层的第二块的预测块与第二块之间的差; 将所获得的差值与所述第一块的预测块相加; 使用平滑函数平滑作为添加的结果生成的第三块; 并且对第一块和平滑的第三块之间的差进行编码。

    Method and apparatus for encoding and decoding video based on first sub-pixel unit and second sub-pixel unit
    54.
    发明授权
    Method and apparatus for encoding and decoding video based on first sub-pixel unit and second sub-pixel unit 有权
    基于第一子像素单元和第二子像素单元对视频进行编码和解码的方法和装置

    公开(公告)号：US08711939B2

    公开(公告)日：2014-04-29

    申请号：US13080121

    申请日：2011-04-05

    申请人： Elena Alshina ,  Alexander Alshin ,  Min-su Cheon ,  Woo-jin Han ,  Tammy Lee

    发明人： Elena Alshina ,  Alexander Alshin ,  Min-su Cheon ,  Woo-jin Han ,  Tammy Lee

    IPC分类号： H04N7/26

    CPC分类号： H04N19/523 ,  H04N19/30 ,  H04N19/46 ,  H04N19/52 ,  H04N19/53 ,  H04N19/533 ,  H04N19/96

    摘要： Methods and apparatuses for encoding and decoding video are provided. The encoding method includes: performing motion estimation on a current block according to a first sub-pixel unit, and obtaining a motion vector in the first sub-pixel unit with respect to the current block; interpolating a reference picture indicated by the motion vector according to a second sub-pixel unit smaller than the first sub-pixel unit; using the interpolated reference picture, selecting a second sub-pixel in the second sub-pixel unit adjacent to a first sub-pixel in the first sub-pixel unit of the reference picture; selecting a corresponding region that has a smaller error with the current block, from among a first corresponding region of the reference picture and obtained with respect to the first sub-pixel, and a second corresponding region of the current block and obtained with respect to the selected second sub-pixel; and encoding information of the selected corresponding region.

    摘要翻译： 提供用于编码和解码视频的方法和装置。 编码方法包括：根据第一子像素单元对当前块执行运动估计，并获得关于当前块的第一子像素单元中的运动矢量; 根据比第一子像素单元小的第二子像素单元内插由运动矢量指示的参考图像; 使用内插参考图像，在与参考图片的第一子像素单元中的第一子像素相邻的第二子像素单元中选择第二子像素; 从参考图像的第一对应区域中，相对于第一子像素选择与当前块具有较小误差的对应区域，以及当前块的第二对应区域，并相对于 选择的第二子像素; 以及编码所选择的对应区域的信息。

    Method and apparatus for encoding and decoding image by using sub-pixel-based motion prediction
    56.
    发明授权
    Method and apparatus for encoding and decoding image by using sub-pixel-based motion prediction 失效
    通过使用基于子像素的运动预测来对图像进行编码和解码的方法和装置

    公开(公告)号：US08451889B2

    公开(公告)日：2013-05-28

    申请号：US12397484

    申请日：2009-03-04

    申请人： Tammy Lee ,  Woo-jin Han

    发明人： Tammy Lee ,  Woo-jin Han

    IPC分类号： H04N7/12 ,  G06K9/32

    CPC分类号： H04N19/523 ,  H04N19/117 ,  H04N19/46 ,  H04N19/61 ,  H04N19/82

    摘要： Provided are a method and apparatus for encoding an image by using sub-pixel-based motion prediction and a method and apparatus for decoding an image by using sub-pixel-based motion prediction. The method of encoding an image includes determining weights for respective low-precision sub-pixels for interpolation between the low-precision sub-pixels, determining an interpolation direction for the low-precision sub-pixels based on a position of a high-precision sub-pixel between the low-precision sub-pixels, and performing motion prediction in units of high-precision sub-pixels determined by interpolation which applies the interpolation direction and the weights to the low-precision sub-pixels.

    摘要翻译： 提供了一种通过使用基于子像素的运动预测对图像进行编码的方法和装置，以及通过使用基于子像素的运动预测来对图像进行解码的方法和装置。 对图像进行编码的方法包括确定用于在低精度子像素之间插值的各个低精度子像素的权重，基于高精度子像素的位置确定低精度子像素的插值方向 并且以通过将插值方向和权重应用于低精度子像素的内插来执行以高精度子像素为单位的运动预测。

    Method and apparatus for predicting motion vector using global motion vector, encoder, decoder, and decoding method
    58.
    发明授权
    Method and apparatus for predicting motion vector using global motion vector, encoder, decoder, and decoding method 有权
    使用全局运动矢量，编码器，解码器和解码方法预测运动矢量的方法和装置

    公开(公告)号：US08306120B2

    公开(公告)日：2012-11-06

    申请号：US11964820

    申请日：2007-12-27

    申请人： Tammy Lee ,  Woo-jin Han

    发明人： Tammy Lee ,  Woo-jin Han

    IPC分类号： H04N7/12

    CPC分类号： H04N19/567 ,  H04N19/107 ,  H04N19/149 ,  H04N19/176 ,  H04N19/19 ,  H04N19/52 ,  H04N19/527

    摘要： Provided are a method and apparatus for predicting a motion vector using a global motion vector, an encoder, a decoder, and a decoding method. The motion vector prediction method includes: predicting a global motion vector of the current block; calculating a first motion vector difference between a motion vector of the current block and a motion vector of the adjacent partition, and a second motion vector difference between the motion vector of the current block and the predicted global motion vector of the current block; and predicting, as the motion vector of the current block, a motion vector having a minimum Rate-Distortion (RD) cost, based on the first motion vector difference and the second motion vector difference.

    摘要翻译： 提供了一种使用全局运动矢量，编码器，解码器和解码方法来预测运动矢量的方法和装置。 运动矢量预测方法包括：预测当前块的全局运动矢量; 计算当前块的运动矢量与相邻分区的运动矢量之间的第一运动矢量差，以及当前块的运动矢量与当前块的预测全局运动矢量之间的第二运动矢量差; 并且基于第一运动矢量差和第二运动矢量差来预测作为当前块的运动矢量具有最小速率失真（RD）成本的运动矢量。

    Method of and apparatus for video encoding and decoding based on motion estimation
    60.
    发明授权
    Method of and apparatus for video encoding and decoding based on motion estimation 有权
    基于运动估计的视频编码和解码方法和装置

    公开(公告)号：US08275039B2

    公开(公告)日：2012-09-25

    申请号：US11936128

    申请日：2007-11-07

    申请人： Woo-jin Han ,  Kyo-hyuk Lee ,  Tammy Lee

    发明人： Woo-jin Han ,  Kyo-hyuk Lee ,  Tammy Lee

    IPC分类号： H04N7/12

    CPC分类号： H04N19/537 ,  H04N19/132 ,  H04N19/147 ,  H04N19/176 ,  H04N19/52 ,  H04N19/61

    摘要： Provided is a method of and apparatus for video encoding and decoding based on motion estimation. The method includes generating a motion vector by searching a reference picture using pixels of a current block, generating a prediction motion vector that is a prediction value of the motion vector by searching the reference picture using previously encoded pixels located adjacent to the current block, and encoding the current block based on the motion vector and the prediction motion vector. By accurately predicting the motion vector of the current block, the number of bits required for encoding the motion vector can be reduced, thereby improving the compression rate of video data.

    摘要翻译： 提供了一种基于运动估计的用于视频编码和解码的方法和装置。 该方法包括通过使用当前块的像素搜索参考图像来生成运动矢量，通过使用与当前块相邻的先前编码的像素搜索参考图像来生成作为运动矢量的预测值的预测运动矢量，以及 基于运动矢量和预测运动矢量对当前块进行编码。 通过精确地预测当前块的运动矢量，可以减少编码运动矢量所需的位数，从而提高视频数据的压缩率。