：图像边缘检测一直以来都是图像处理与分析领域的研究热点。这里介绍了几种经典的边缘提取算法及

其原理，对各种方法的优缺点进行了分析，并通过试验对不同算子边缘检测结果进行了详细的精度分析与比较，

为边缘检测算子的选择提供了一种较好的参考。-Abstract：Image edge detection is always study focus in the field of image processing an d analysis．In the paper

， several classic edge

extracting algorithms and principles aYe described；the advantages and disadvan tages of these methods are an alyzed ；the experimental

results of edge detection aye analyzed and compared in detail．These results have some reference value for selection of these ed ge．de—

tecting ope rators．