出版社：Academy & Industry Research Collaboration Center (AIRCC)
摘要：In image steganography, the transfer domain provides better concealment of the secret image inthe cover image, and has therefore proved much more reliable than spatial domain. In thispaper, we attempt to maximize the retrieved secret PSNR against the original secret, whilesimultaneously minimizing the cover image degradation. This paper is built upon Discrete-Wavelet Transform to process the image while the Least Significant Bit method to store theinformation. We follow a principle of priority ordering the wavelet subspaces of both the secretand the cover with a view to make for the most efficient concealment. We propose the product ofthe secret and cover image PSNR and SSIM measures as the quantities to be maximized as itprovides a more comprehensive evaluation of system performance, and study the performanceagainst the choice of the number of levels of wavelet decompositions.
