Imri Goldberg napsal(a): > Since seam-carving was all the rage back then, we tried to think what > would be a good algorithm to detect seam carving when used to remove > parts of an image. The idea we had was that since seam carving removes > parts of the image with low gradients, you could look for parts of the > image that don't have low gradients, even though "they should".
I think seam-carving produce unnaturally looking images. I think algorithms that catches distortion or repetition would catch it. > We never put this one to the test, but more ideas to automate photo > forgery detection are always interesting. I like wavelet-based algorithms the most. "Below we describe three such applications: (1) detecting hidden messages (steganography); (2) differentiating between computer graphic and natural images; and (3) detecting re-broadcast attacks against biometric identification systems." http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.66.3047&rep=rep1&type=pdf _______________________________________________ Fun and Misc security discussion for OT posts. https://linuxbox.org/cgi-bin/mailman/listinfo/funsec Note: funsec is a public and open mailing list.
