Application of Improved Canny Arithmetic Operator to Tool Image Monitor

摘要

The effect of image edge detection and segmentation for damaged area is poor during tool detection. Aiming at that, Robert and Sobel and Prewitt characteristic segmentation arithmetic operators are compared in this paper. The arithmetic improved of Canny operator is put forward by calculating amplitude value and direction of grads with two rank partial derivative's finite difference. Smoothing edge information is reduced. Software of segmentation and recognition is developed by using VC 6.0. The practical test indicates that tool damage characteristic states under different lights can be recognized by this arithmetic and its precision is up to 96%.