TY - GEN
T1 - A DWT ordering scheme for hiding data in images using pixel value difference
AU - Al-Asmari, Awad Kh
AU - Salama, Ahmed
AU - Iliyasu, Abdullah M.
AU - Al-Qodah, Mohammed A.
PY - 2012
Y1 - 2012
N2 - A scheme is proposed to hide data in images based on a prioritised ordering of the content of the host image. The embedding process uses the watermark strength to determine the ordering of the 16 regions resulting from the second level wavelet transform DWT decomposed content of the host image. The DWT decomposed sub-bands of the cover image were analysed, transformed using the Pixel Value Difference (PVD), and then ranked in terms of their ability to withstand changes that do not imperil the visual quality (PSNR) of the watermarked image depending on which an NxN-sized watermark stream is hidden in the 8 highest ranked sub-bands. Using the proposal, a 256x256 Lena image had the capacity to accommodate up to 96800 bits of a watermark logo while still maintaining an appreciable visual quality manifested by a PSNR value of 33.66 dB.
AB - A scheme is proposed to hide data in images based on a prioritised ordering of the content of the host image. The embedding process uses the watermark strength to determine the ordering of the 16 regions resulting from the second level wavelet transform DWT decomposed content of the host image. The DWT decomposed sub-bands of the cover image were analysed, transformed using the Pixel Value Difference (PVD), and then ranked in terms of their ability to withstand changes that do not imperil the visual quality (PSNR) of the watermarked image depending on which an NxN-sized watermark stream is hidden in the 8 highest ranked sub-bands. Using the proposal, a 256x256 Lena image had the capacity to accommodate up to 96800 bits of a watermark logo while still maintaining an appreciable visual quality manifested by a PSNR value of 33.66 dB.
KW - discrete wavelet transform (DWT)
KW - DWT ordering
KW - image processing
KW - Pixel Value Difference (PVD)
KW - watermark extraction
KW - watermarking
UR - http://www.scopus.com/inward/record.url?scp=84873549878&partnerID=8YFLogxK
U2 - 10.1109/CIS.2012.130
DO - 10.1109/CIS.2012.130
M3 - Conference contribution
AN - SCOPUS:84873549878
SN - 9780769548968
T3 - Proceedings of the 2012 8th International Conference on Computational Intelligence and Security, CIS 2012
SP - 553
EP - 557
BT - Proceedings of the 2012 8th International Conference on Computational Intelligence and Security, CIS 2012
T2 - 2012 8th International Conference on Computational Intelligence and Security, CIS 2012
Y2 - 17 November 2012 through 18 November 2012
ER -