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AN EFFICIENT ALGORITHMIC SOLUTION FOR HIGH PAYLOAD GOOD IMPERCEPTIBILITY HYBRID IMAGE STEGANOGRAPHY

Author(s)
A. Murtaza Department of Electrical Engineering, University of Engineering and Technology,Taxila,Pakistan
F. Shaukat Department of Electrical Engineering, University of Engineering and Technology,Taxila,Pakistan
G. Raja Department of Electrical Engineering, University of Engineering and Technology,Taxila,Pakistan
A.K. Khan Department of Electrical Engineering, University of Engineering and Technology,Taxila,Pakistan
Abstract
A hybrid steganographic technique has been proposed to enlarge the size of secret message and to hide several images in one cover image. Initially, the secret images were compressed using JPEG 2000 before embedding them to the cover image. Second least significant bit plane of cover image was entirely replaced by secret message while tri-ways-pixel-value-differencing (TPVD) was used to hide secret message in remaining seven-bit cover image. The quality of stego image was enhanced by residual image coding (RIC). The cover image was divided in four sub-images, three of them provided cover for secret message using proposed technique while fourth sub-image was used to embed RIC of stego image using only TPVD, to ensure better quality in terms of peak signal to noise ratio (PSNR). Proposed technique provided the opportunity to transmit secret data without detection by different steganalysis techniques like dual statistics steganalysis. Experimental results verified that proposed technique achieved high payload with better image quality than TPVD scheme.
Publication Details
Page(s) 228-234
DOI DOI not available
Published Journal: Pakistan Journal of Science, Volume: 69, Issue: 2, Year: 2017

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Keywords
Least significant bit replacement, data hiding, Image hiding, steganography, Pixel-value differencing
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