Description: Read the image, extracting information rgb, three ways to do edge detection, and outputs an image
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File list (Check if you may need any files):
beagiedali.m
__MACOSX
........\._beagiedali.m
IMG6.png
__MACOSX\._IMG6.png
WechatIMG1.jpeg
__MACOSX\._WechatIMG1.jpeg