In this paper, based on B-spline wavelets multiscale curvature functions of image edges are calculated. By the multiscale curvature corners with important informations are filtered and located whose values are over a threshold. Some technologies, Canny edge detecting operating and Mathematical morphology are employed for image preprocessing and B-spline wavelets are employed for reducing the effect of noise or small variation, which brings us benefits to locate corner points with high accuracy . Basing on [...