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．

The Comparative Study.pdf

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