Motion estimating method and device

一种运动估计方法及装置

Abstract

本发明公开了一种运动估计方法及装置。方法包括:对参考帧进行半像素插值;采用3抽头非对称滤波器,对参考帧整像素水平方向和垂直方向、以及半像素水平方向和垂直方向上的四分之一像素进行插值;采用对称滤波器,对参考帧整像素对角线方向上的四分之一像素进行插值;在插值后的参考帧中,搜索与当前块最匹配的预测块。本发明提高了四分之一像素插值的精度,从而提高了运动估计的精度。
The invention discloses a method and a device for motion estimation. The method includes the following steps: a half pixel interpolation is carried out for a reference frame; an asymmetric filter with 3 taps is used for interpolation of a full pixel of the reference frame in horizontal direction and vertical direction and of 1/4 of the half pixel also in horizontal direction and vertical direction. A symmetric filter is used for interpolation of 1/4 of the full pixel of the reference frame in diagonal direction; at last, an estimation block which is matched with the current block the mostly is searched inside the reference frame which is interpolated. The invention increases the precision of interpolation of 1/4 pixel, thereby increasing the precision of motion estimation.

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Patent Citations (4)

    Publication numberPublication dateAssigneeTitle
    CN-101043621-ASeptember 26, 2007华为技术有限公司一种自适应插值处理方法及编解码模块
    CN-1543221-ANovember 03, 2004浙江大学Method and apparatus for 1/4 pixel precision interpolation
    CN-1863319-ANovember 15, 2006华为技术有限公司Fractional pixel interpolation method and encoding and decoding apparatus
    CN-1964493-AMay 16, 2007清华大学A motion compensation interpolation method for H.264 decoder

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