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A variety of perceptual encryption schemes have been studied to generate visually encrypted images for protecting visual secrecy and privacy while supporting ongoing innovation and growth in the applications of digital imagery. However, typical image quality metrics such as PSNR and SSIM are not suitable to evaluate the invisibility of visually encrypted images. To overcome this issue, this paper...
In this paper, an effective data hiding method for encrypted JPEG 2000 codestreams is proposed. By using the property of the discrete wavelet transformation (DWT), an image is visually encrypted: multiplying random signs to the discrete wavelet transformed (DWTed) coefficients of the image, where the image is also compressed in the DWTed domain by JPEG 2000. In addition, data hiding is performed in...
This paper proposes random sign encryption in JPEG 2000-based data hiding. By multiplying random signs to the discrete wavelet transformed coefficients of an image, the image is visually encrypted. Full and partial random sign encryption is studied in this paper, and effects of both are investigated. From experimental results, both full and partial random sign encryption does not degrade the quality...
This paper proposes a copyright- and privacy-protected image trading system where consumer's information is fingerprinted into an encrypted image by a trusted third party. Distinctly from the latest copyright- and privacy-protected image trading systems, this paper proposes a more practical and effective image trading system in which image compression by JPEG 2000 is introduced. By applying random...
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