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In this paper, a novel Joint Watermarking and Encryption scheme is presented. The design of proposed joint watermarking and encryption scheme involves the development of the encryption and watermarking schemes such that both the techniques are compliant with each other. Based on statistical analysis of continuous-tone still images, media data, in DCT domain, is partitioned into two parts. The encryption...
In this paper a watermarking technique has been proposed. The proposed watermarking technique has been incorporated in the JPEG compression standard. Unlike conventional watermarking techniques which are generally based on manipulation of the AC component in DCT domain, the proposed approach utilizes the DC component that is perceptually significant part, to embed the watermark. The watermark embedding...
Perceptual Encryption is required in many of the multimedia content preview application. There is always a need of an efficient technique that reduces the overhead of encryption in real-time. In this paper we take advantage of the energy present in DCT block and have studied the effects of encrypting the selected DCT coefficient. Also the DC coefficient is further divided into bitplanes and an investigation...
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