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This paper presents a novel content-based hidden transmission method for secret data to improve the security and secrecy. In the proposed method, the secret data is encrypted by chaotic map before embedding. Then the cover image is segmented by watershed algorithm and fuzzy c-means clustering. At last we extract the feature of each region and embed the secret data into the cover image according to the result of feature extraction. Our method can overcome the disadvantage of blockbased steganographic techniques. Experimental results show that the security and performance of the proposed scheme are high.

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