Research on Sub-pixel Coordinates Extraction of Image Corner

In the research of corner detection technology, some improved algorithm of Curvature Scale Space (CSS) have been used to detect the discriminant curvature larger pixels. A new algorithm for corner sub-pixel positioning is proposed which is based on support pixel curve fitting. The experimental results show that more accurate angular coordinates can be extracted by using the algorithm on the basis of CSS corner. And the precision performance has been improved by about 17% compared with the CSS algorithm.