Research on Robust Performance Optimization Algorithm of Medical Image Watermarking
In this paper,a watermarking algorithm based on DCT transform and Chebyshev chaotic mapping is proposed,which is suitable for improving the security of medical images.Firstly,the feature extraction of the original medical image is carried out.The initial binary watermark is combined with the chaotic map,and the watermark key coefficient is output by operation.Finally,the experimental simulation is carried out by programming in Matlab,and the anti-attack performance is tested.The experimental results show that the algorithm can effectively realize the embedding and extraction of digital watermark and can obtain better robustness.The research results can better provide solutions for the transmission security of medical images.
medical image processingChebyshev chaotic mapDCT transform
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