【摘要】 本文讨论了相关识别中的曲面拟合法 .利用相关系数在真实匹配点附近的统计特性 ,通过对相关系数进行曲线 (一维 )或曲面 (二维 )拟合 ,根据其一阶导数确定最大相关系数所在的位置 ,快速得到亚像素匹配点 .与逐步搜索法相比 ,该方法大大减少了运算次数 ,提高了数字图像相关运算的速度更多还原

【Abstract】 A curved surface approximation method used for correlation recognition calculation is discussed in this paper. By using the statistical properties of the correlation coefficient, a curve or curved surface approximation of correlation coefficient is calculated, and then the matching point is obtained through evaluating its derivative function. Compared to sub pixel progressive searching method, this method enhances the speed of calculation in correlation recognition remarkably.更多还原