求翻译：Harris角点检测算法是一种基于信号的点特征提取算子，其原理是将所处理的图像窗口 w(一般为矩形区域)向任意方向移动微小位移(x，y)，则其灰度改变量可定义为：是什么意思？

Harris corner detection algorithm is based on the signal feature extraction operator points, the principle is handled by the image window w (usually rectangular) move in any direction to the small displacement (x, y), then the gray-scale change volume can be defined as:

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The Harris vertex examination algorithm is one kind based on the signal spot characteristic extraction operator, its principle is image window w which processes (is generally rectangular region) to the random orientation moves moves small (x, y), then its gradation increment may define is:

Harris corner detection algorithm is based on signal feature extraction operator, the principle of which is handled by the image window w (usually a rectangle) to the mobile micro-displacement in any direction (x, y), the gray variation can be defined as:

It is that a kind of some characteristics based on signal withdraw operators that some Harris angles detect algorithms, its principle to move minute displacement (x to arbitrary direction picture window w (general for rectangular area) not dealt with, y),its variation of grey level can be defined as