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That is a pretty interesting idea. Are there other photo tampering detection methods other than the obvious clone stamp? For instance, does color correction lea
by weaksauce 17y ago
That is a pretty interesting idea. Are there other photo tampering detection methods other than the obvious clone stamp? For instance, does color correction leave a fingerprint that could be detected via some sort of probabilistic or algorithmic way?
- callmeed 17y agoI don't know the answer, but basic color correction isn't really a cardinal sin like pasting/clone-stamping is. Performing white balance or converting to B/W is usually fine (after all, a lot of newsprint images end up B/W). Here's some examples where this behavior has been uncovered: http://www.poynter.org/content/content_view.asp?id=28082 http://www.poynter.org/content/content_view.asp?id=28082 http://www.nytimes.com/slideshow/2009/07/05/magazine/20090705-gilded-slideshow_index.html http://www.nytimes.com/slideshow/2009/07/05/magazine/2009070...
- nitrogen 17y agoColor correction of an 8-bit-per-channel image will leave gaps in the color histogram. It's usually possible to conceal those gaps, though, by blurring the image slightly or adding some noise.