TY - GEN
T1 - A frequency domain adaptive watermarking algorithm for still colour images
AU - Al-Gindy, A.
AU - Al-Ahmad, H.
AU - Qahwaji, R.
AU - Tawfik, A.
PY - 2009
Y1 - 2009
N2 - This paper presents an adaptive algorithm for digital watermarking of still colour images. The watermark is embedded in the DCT coefficients of the green channel of the RGB colour image. The algorithm takes into account the perceptual capacity of each coefficient inside the DCT blocks before embedding the watermark information. Therefore, the first 16 low frequency coefficients (excluding the DC value) in the 8×8 DCT block was screened and the eight coefficients with the maximum magnitudes were selected for embedding. The algorithm used is blind and does not require the original image for extracting the watermark. The peak signal to noise ratios (PSNR) is around 60dB. The watermarking method is shown to be robust against JPEG compression, additive noise, cropping, scaling, low-pass and median filtering.
AB - This paper presents an adaptive algorithm for digital watermarking of still colour images. The watermark is embedded in the DCT coefficients of the green channel of the RGB colour image. The algorithm takes into account the perceptual capacity of each coefficient inside the DCT blocks before embedding the watermark information. Therefore, the first 16 low frequency coefficients (excluding the DC value) in the 8×8 DCT block was screened and the eight coefficients with the maximum magnitudes were selected for embedding. The algorithm used is blind and does not require the original image for extracting the watermark. The peak signal to noise ratios (PSNR) is around 60dB. The watermarking method is shown to be robust against JPEG compression, additive noise, cropping, scaling, low-pass and median filtering.
UR - https://www.scopus.com/pages/publications/70350521127
U2 - 10.1109/ACTEA.2009.5227925
DO - 10.1109/ACTEA.2009.5227925
M3 - Conference contribution
AN - SCOPUS:70350521127
SN - 9781424438341
T3 - 2009 International Conference on Advances in Computational Tools for Engineering Applications, ACTEA 2009
SP - 186
EP - 191
BT - 2009 International Conference on Advances in Computational Tools for Engineering Applications, ACTEA 2009
T2 - 2009 International Conference on Advances in Computational Tools for Engineering Applications, ACTEA 2009
Y2 - 15 July 2009 through 17 July 2009
ER -