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1. 发明授权

US06931066B2 Motion vector selection based on a preferred point 有权
标题翻译：基于优选点的运动矢量选择
公开(公告)号：US06931066B2
公开(公告)日：2005-08-16
申请号：US10715894
申请日：2003-11-18
申请人： Swee-San Tee , Kah-Ho Phong , Jean-Michel Bard , Lucas Y. W. Hui
发明人： Swee-San Tee , Kah-Ho Phong , Jean-Michel Bard , Lucas Y. W. Hui
IPC分类号： H04N7/12 , H04N7/26
CPC分类号： H04N19/51
摘要： A method of selecting a motion vector for use in a motion estimation system in which the motion vector defines movement of a block of pixels between a search window and a reference frame. The method includes the steps of scanning a search window in a fixed order for a suitable match with an area of the reference frame such that each search position within a current row or column of the window is one pixel away from a previous search position, defining a preferred point in the search window, calculating a primary norm function with reference to the preferred point for a given position in each row or column, calculating a norm function for each search position based on a linear increment of the primary norm function for the respective row or column, calculating an Absolute Error (AE) for each search position, based on a difference between a given property of the search position and a position in the reference window, and selecting a motion vector, the displacement of the motion vector defined in terms of the search position having the smallest AE and the smallest norm function. An apparatus for performing the method is also disclosed.
摘要翻译：一种选择用于运动估计系统的运动矢量的方法，其中运动矢量定义搜索窗口和参考帧之间的像素块的移动。该方法包括以固定顺序扫描搜索窗口以与参考帧的区域进行合适的匹配的步骤，使得窗口的当前行或列内的每个搜索位置距离先前搜索位置一个像素，定义在搜索窗口中的优选点，参考每行或列中的给定位置的优选点来计算主范数函数，基于各个搜索位置的主范数函数的线性增量来计算每个搜索位置的范数函数行或列，基于搜索位置的给定属性与参考窗口中的位置之间的差计算每个搜索位置的绝对误差（AE），并且选择运动矢量，定义在具有最小AE和最小范数函数的搜索位置的项。还公开了一种用于执行该方法的装置。

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