Legacy ImageMagick Discussions Archive

i used compare command of imagemagick to detect near duplicate images. Though i refer source code and several documentations i couldn't find which code part handles this compare command. Can you please tell me which algorithm/code handles this compare command

Though i searched in many documentations i couldn't find the details about the algorithm which handles the Diff() function in comparing images. Would you please provide me a link from where i can get details about the algorithm use in Diff() function? is there any specified name for this algorithm?

I implemented a sub image detecting system using the compare command of imagemagick. command = "compare -metric MAE -subimage-search "+image1+" "+image2+" null: "; I used the above command in subimage detection. But it gives fine results only for some images. Some times it's detecting wrong images ...