算法不仅具有旋转不变性, 而且对灰度变化、噪声、光照以及对比度变化等也具有很好的鲁棒性, 同时匹配速度比归一化积相关匹配算法(N P rod) 提高了近一倍。-algorithm with a rotating invariance, but the gray changes, noise, light and contrast changes with good robustness, while matching faster than a normalized correlation matching algorithm (N P rod), an increase of nearly 100%.