角点检测算法是一种基于信号的点特征提取算法，Harris角点检测算子是通过Taylor级数展开法扩展了思路，计算窗口沿任何方向移动后的灰度变换情况，利用数学解析式来进一步确定特征点。-Corner detection algorithm is a point-based feature extraction algorithm signal, Harris corner detection operator is expanded by Taylor series expansion ideas