Legacy ImageMagick Discussions Archive

i should verify if a small pic, cutted out from a bigger image, was rotated of an angle from the original. can i do this by comparing the big original image with the small image obtained from the first one? how can i do?

thanks

if the uploaded image and the original one are both (for example) 600x576 pixels, is it enough to say that the uploaded one is not deformed?

ok i understand ! just one more thing,is that a way using imagemagick to know if the imagehosting site change the ratio width/height of a pic? so to exclude that the uplodaded image is deformed?

I tried to use compare for 2 photos: the first one was the original image and the second one was the same image uploaded on a imagehosting site. The two images have the same pixels (600x576 for example) but imagemagick shows differences between these pics. How is it possible there is a difference if...