摘要
为解决Lyvers算法在利用空间矩进行亚像素边缘检测时交点附近的边缘检测误差大的问题,对交点附近的边缘模型进行了分析,提出利用空间矩多项式判断边缘交点,然后利用双线性插值法和牛顿迭代法来求取多项式的解,而多项式的解就是亚像素边缘检测结果.实验证明,改进算法很好地弥补了Lyvers算法在交点附近的计算误差.
In order of the junction, the Then, bilinear inte to solve the problem which the errors of Lyvers method are very large at the neighborhood method that is using spatial-moment polynomials for detecting the junction is introduced. rpolation and Newton iteration method are utilized to find the solution of the spatial -moment polynomials, the solution is the result of subpixel edge detection. By experiment, the improvement method can conquer the defect of Lyvers method at neighborhood of the junction.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2006年第6期870-872,876,共4页
Journal of Harbin Institute of Technology
基金
国家教委留学归国人员基金资助项目
关键词
空间矩
亚像素
边缘检测
spatial moment
subpixel
edge detection