Exposing Image Fuzzy Forgeries based on Dyadic Contrast Contourlet
نویسندگان
چکیده
In this paper, we combined with efficient image signal processing algorithms, according to the manifestations of the blur of polish operation in the frequency domain,proposed a blind detection algorithm for image tampering evidence. First, the target image transformed into a new Nonsubsampled dyadic contourlet domain which based on contrast à trous wavelet, then homomorphic filtering on it in this domain to enhance the edge whcih was blurred, and then combined with morphological Filter to eroded the area of non-tampering, to complete the blurred image tampering detection. Through experiments, the algorithm in this paper have a excellent recognition for the blurred retouch images.
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