A Novel Arithmetic of Image Edge Detection of Canny Operator
Lisha Guo · ACTA PHOTONICA SINICA · 2011
Edge detection is one of the important parts of image measurement.To solve the confict of noise restraining and detail keeping in image edge detection,an adaptived Canny edge-detection method is proposed which is based on Canny theory.Adopt wavelet transform and an ameliorated method that is based on adaptive median filter to replace the Gauss filter which is in Canny arithmetic to remove noise;adopt 3×3 neighbour-field to replace 2×2 neighbour-field calculate grads extent value.The experiments prove that the proposed arithmetic has the advantage of noise restraining and detail keeping in the field of images management,can better detect the edges of the images,and has precision detection.Ameliorated method can keep the excellent performance of Canny operator in good localization,only one response to a single edge and good detection,and improve the performance in the detail edge-detection and good detection.