A New Steganography Technique Based on Layers of Image and Sensitivity Vectors A cquiring HVS

	International Journal of Computer & Organization Trends (IJCOT)
	© 2011 by IJCOT Journal
	Volume-1 Issue-2
	Year of Publication : 2011
	Authors :Jagvinder Kaur

Jagvinder Kaur "A New Steganography Technique Based on Layers of Image and Sensitivity Vectors A cquiring HVS", International Journal of Computer & organization Trends  (IJCOT), V1(2):1-6 Sep - Oct 2011, ISSN 2249-2593, www.ijcotjournal.org. Published by Seventh Sense Research Group. 

Abstract—Steganography is the art and science of hiding the existence of information . To provide an imperceptible stego - image quality and to improve the capacity of the hidden secret data, a steganography techn ique based on layers of i mage and sensitivity v ectors is proposed in this paper . In this technique , firstly the whole host image is divided into 8x8 blocks and each block is further sub - divided into the 8x8 sub block which is formed by t he binary representation of pixel values of the image. The SVBA algorithm then analyzes the mean value of gray block by block, and sets a sensitivity vector for each block with considering HVS features. It adjusts the embedding of secret message for steganography schema dynamically according to the block sensitivity vectors. The s imulation experiment results on Matlab7.10 show this algorithm has a balanced performance on efficiency, capacity, imperceptibility and robustness.

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Keywords— Steganography, Peak Signal - to - Noise Rate (PSNR), Mean Square Error (MSE), Manhattan distance (M dist); HVS features; Block sensitivity vector .