A Study and Analysis on a Perceptual Image Hash Algorithm Based on Invariant Moments
Bin Hu · DOAJ (DOAJ: Directory of Open Access Journals) · 2013
In this paper, we firstly introduce the perceived perceptual image hash algorithms proposed by scholars in recent years. Then we classify the algorithms according to the different theories. At the same time, we also describe the general process of perceptual image hash algorithm and realize the two classic algorithms in the professional field. After all above, we make use of the invariant moment of image to the invariance of geometric transformation, and propose a new perceptual image of hash algorithm based on invariant moments with robustness and security. Through the test from different aspects, we compare the algorithm with the performance of two kinds of classic algorithms, then we can conclude that the new algorithm has better robustness and security.