Biometrics inspired watermarking based on a fractional dual tree complex wavelet transform
Future Generation Computer Systems
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In this paper, a dual digital watermarking embedding and detecting algorithm for image is presented, which uses the robust watermark and fragile watermark embed in the fractional Fourier transform (FRFT) domain of the image, and the watermark position and the transform order are used as the encryption keys. The experiment results show that the embedded watermark is perceptually invisible and robust to various image processing operations. Most importantly, the tampered place can be identified accurately.