I can compare 2 images and find the area where they for instance if a name is missing from a credit card the program will draw a red box around the area where the images differ.
But I am currently visually testing website with screen shots, and often when one web element is missing the other elements get shifted upwards, thus breaking the image comparison algorithm.
Is there a way of comparing 2 images with vertical tolerance ?
P.S. I know blink-diff by yahoo has this function
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