一种快速亚像素边缘检测算法

摘要

基于正交多项式拟合提出一种快速亚像素边缘检测算法，并给出计算边缘点的直接表达式。结果表明，该算法有效地解决了目前亚像素边缘检测算法的检测精度和检测时间不能同时兼顾的问题。通过与Gauss和空间矩两种亚像素边缘检测算法进行比较，该算法能快速准确地求得亚像素级边缘位置。%A sub-pixel edge detection algorithm based on orthogonal polynomial fitting was proposed, and the direct expression to calculate edge points was given.The algorithm has higher detection accuracy and uses less detection time.However,previous sub-pixel edge detection algorithms can not solve these two problems simultaneously and effectively.Compared with Gauss and spatial moment algorithms,this algorithm can obtain the sub-pixel level edge position fast and accurately.