Comment difference (Score 1) 291
This is how I check for how much compression i have in my images.
1. Grab the original and the jpeg into photoshop (or whatever you use)
2. do a difference as your transfer mode. This will show you how different it is.
3. find out the value of all the pixels (I don't know ad them together or something)
Repeat the above steps with the second picture.
whichever is more is the one that is more different (why does that sound like bad English to me?) will be the lower quality image.
Use python and the PIL (python image library) to automate the whole thing and thats it.
1. Grab the original and the jpeg into photoshop (or whatever you use)
2. do a difference as your transfer mode. This will show you how different it is.
3. find out the value of all the pixels (I don't know ad them together or something)
Repeat the above steps with the second picture.
whichever is more is the one that is more different (why does that sound like bad English to me?) will be the lower quality image.
Use python and the PIL (python image library) to automate the whole thing and thats it.