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    • 3. 发明申请
    • METHOD AND APPARATUS FOR PROCESSING A VIDEO SIGNAL
    • 用于处理视频信号的方法和装置
    • WO2011093688A2
    • 2011-08-04
    • PCT/KR2011000729
    • 2011-02-01
    • LG ELECTRONICS INCPARK SEUNG WOOKJEON YONG JOONKIM JUNG SUNCHOI YOUNG HEESUNG JAE WONJEON BYEONG MOONPARK JOON YOUNGLIM JAE HYUN
    • PARK SEUNG WOOKJEON YONG JOONKIM JUNG SUNCHOI YOUNG HEESUNG JAE WONJEON BYEONG MOONPARK JOON YOUNG
    • H04N7/26
    • H04N19/517H04N19/57H04N19/61
    • The present invention relates to a method and apparatus for processing a video signal. The method for processing a video signal according to one embodiment of the present invention comprises the following steps: acquiring scaled motion vector information for a block to be decoded; acquiring a global motion vector of a peripheral picture; restoring the scaled motion vector into an original motion vector using the global motion vector of the peripheral picture; and decoding the block to be decoded, using the restored original motion vector. According to a variety of embodiments of the present invention, image encoding and decoding can be performed in an efficient manner. For example, distortions caused by a blurring phenomenon can be prevented, and distortions caused by an accelerating motion occurred in the whole or a portion of an image can be prevented. In addition, block partitions suitable for characteristics of an image can be realized. Particularly, block partitions using a curve can be realized, thereby enabling motion prediction to be performed with consideration for all characteristics of an image. In addition, a search area having a variable size is set in proportion to a time and a distance, thereby preventing distortions in a direct prediction mode.
    • 本发明涉及一种用于处理视频信号的方法和装置。 根据本发明的一个实施例的用于处理视频信号的方法包括以下步骤:获取要解码的块的缩放运动矢量信息; 获取外围图像的全局运动矢量; 使用周边图像的全局运动矢量将缩放运动矢量恢复为原始运动矢量; 并使用恢复的原始运动矢量对要解码的块进行解码。 根据本发明的各种实施例,可以以有效的方式执行图像编码和解码。 例如,可以防止由模糊现象引起的失真,并且可以防止在整个或一部分图像中发生由加速运动引起的失真。 此外,可以实现适合于图像特性的块分区。 特别地,可以实现使用曲线的块分割,从而能够考虑图像的所有特征来执行运动预测。 此外,具有可变大小的搜索区域被设置成与时间和距离成比例,从而防止直接预测模式中的失真。
    • 9. 发明申请
    • METHOD AND APPARATUS FOR DECODING A VIDEO SIGNAL
    • 用于解码视频信号的方法和装置
    • WO2010143853A3
    • 2011-02-24
    • PCT/KR2010003639
    • 2010-06-07
    • LG ELECTRONICS INCKIM JUNG SUNPARK SEUNG WOOKCHOI YOUNG HEESUNG JAE WONJEON BYEONG MOONPARK JOON YOUNG
    • KIM JUNG SUNPARK SEUNG WOOKCHOI YOUNG HEESUNG JAE WONJEON BYEONG MOONPARK JOON YOUNG
    • H04N19/60H04N7/24H04N19/129
    • H04N19/122H04N19/129H04N19/176H04N19/18H04N19/44H04N19/46H04N19/61
    • The present invention relates to a method for decoding a video signal, comprising the steps of: acquiring a transform size flag of the current macroblock from a video signal; checking the number of non-zero transform coefficients at each pixel position in a first transform block which corresponds to the transform size flag; changing a scan order of the first transform block by prioritizing the position of the pixel having the greatest number of the non-zero transform coefficients in the first transform block; determining the number of the non-zero transform coefficients at each pixel position in a second transform block, and setting the changed scan order of the first transform block as an initialized scan order of the second transform block; adding the number of the non-zero transform coefficients at each pixel position in the first transform block and the number of the non-zero transform coefficients at each pixel position in the second transform block, and changing the scan order of the second transform block by prioritizing the position of the pixel having the greatest number of the non-zero transform coefficients; and decoding the transform coefficients arranged in the scan order changed in the previous step, wherein the first transform block and the second transform block have sizes corresponding to the transform size flag, and are contained in the current macroblock.
    • 本发明涉及一种视频信号解码方法,包括以下步骤:从视频信号中获取当前宏块的变换大小标志; 检查对应于变换大小标志的第一变换块中的每个像素位置处的非零变换系数的数量; 通过对第一变换块中具有最大数目的非零变换系数的像素的位置进行优先排列来改变第一变换块的扫描顺序; 确定第二变换块中每个像素位置处的非零变换系数的数目,并将第一变换块的改变的扫描顺序设置为第二变换块的初始化扫描顺序; 将第一变换块中的每个像素位置处的非零变换系数的数量和第二变换块中的每个像素位置处的非零变换系数的数量相加,并且将第二变换块的扫描顺序改变为 优先考虑具有最大数目的非零变换系数的像素的位置; 以及对在前一步骤中改变的扫描顺序排列的变换系数进行解码,其中第一变换块和第二变换块具有与变换大小标志对应的大小,并且被包含在当前宏块中。