Medical Image Authentication Using Hash Function and Integer Wavelet Transform

In this paper, a new fragile watermarking algorithm for medical images is proposed. This algorithm makes it possible to resolve the security and forgery problem of the medical images. Instead of the discrete wavelet transform, an integer wavelet transform is used to utilize hash function. The watermark associated with the hash values is inserted into the LSBs of the integer wavelet transform coefficients. From the experimental results, it can be confirmed that the proposed algorithm detects a forged area of the image very well.