However, simply changing the contrast gives you some of the element. Courts have been accepting such things for many years. Remember, this is a digital picture to start with, not an analog B&W piece of film. That means that the "print" you are looking at in the first picture is not the "real" picture anyway ~ it's just one of an infinite variety of pictures possible with analysis of the pictels. BTW, even in that infinitude the perp is still identifiable, not some other guy!
Got a link to it?
Since we don't need to know about it once the perp is ID'd, it's existence is irrelevant.
The jury will need to know about it unless you want him to get off.