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Canny operators seeking an edge, the minimum thres
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OpenCV+vs2010, load images, and then use the cvtcolor, to convert RGB to gray, which uses the 3x3 kernel noise,
run a Canny operator , threshold values can be arbitrarily set through the slider, using Canny operator output edges as the
mask display the original image , you can see the edges of images with different thresholds
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