If I have a .gif and a .png file, can I compare them to see if they represent the same image?
For example, let's say I have a .jpeg and I convert it to .gif and .png
x.jpeg ---> x.gif \ ---> x.png
if I compare the .gif and .png is there a way to determine they have similar image data? how easy is it do that? would it be a pixel by pixel comparison?