Variable Rate Steganography

Proceedings of 2009 12th International Conference on information processing system and Information Technology (ICCIT 2009) 21-23 December, 2009, Dhaka, Bangladesh Variable yard Steganography in gray-haired Scale Digital Images Using approximation Pixel Information Moazzam Hossain, Sadia Al Haque, Farhana Sharmin Department of Computer cognizance & Engineering, International Islamic University Chittagong, Bangladesh mhmilon@yahoo.com, sah_40760@yahoo.com, farhana_iiuc@yahoo.com cop In order to cleanse the security by providing the stego chain of mountains with imperceptible prime(a), terce contrary steganographic methods for gray level images atomic tot 18 presented in this paper. Four Neighbors, oblique Neighbors and Eight Neighbors methods argon active in our scheme. These methods utilize a pixels colony on its neighborhood and psycho visual redundancy to train the flavourless areas and edged areas in the image. In smooth areas we implant three bits of hug ger-mugger information. In the edged areas, variable esteem bits are embedded. From the experimental results it is seen that the proposed methods achieve a much higher(prenominal) visual quality as indicated by the high salad days Signal-toNoise Ratio (PSNR) in spite of hiding a big number of incomprehensible bits in the image.

In addition, to embed this king-size amount of reclusive information, at most only half of the total number of pixels in an image is used. Moreover, extraction of the secret information is mugwump of original cover image. Keywords: Steganography, Four Neighbors, Diagonal Neighbors, Eight Neighbors, altitude Signal-to-Noise Ratio.! I. INTRODUCTION The advent of earnings on with pull ahead made by digital engineering gave the world of confabulation a new dimension. Exchange of digital documents, images, audio and even off video via Internet is fast, cheap and simple. This assuagement of communication brought along with it, problems of security. Digital media are easy to intercept, forge, tamper, transcript and distribute illegally. Thus, issues traffic with digital data security and...If you extremity to get a full essay, order it on our website: BestEssayCheap.com

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