TY - GEN
T1 - Rate distortion optimization for efficient watermarking in the DCT domain
AU - Hadar, O.
AU - Gonen, E.
AU - Kaminsky, E.
PY - 2008/9/5
Y1 - 2008/9/5
N2 - In this work we concentrate on a unique algorithm for watermarking, which is based on a modulo operation method. This method hides an integer number in the sum of the quantized DCT coefficients in a JPEG block. We use the Lagrangian optimization algorithm, which enables us to select the possible coefficients that will be changed in order to insert the watermark while controlling the bit rate and the distortion level (MSE). The uniqueness of this work is that by integrating the rate-distortion optimization method with the watermarking process we can control the rate of the watermarked image with minimum additional distortion. Initial results of our algorithm show that we can add 4-5 bits per DCT block (8x8 pixels), with a distortion level of 0.7 [dB] at JPEG compression quality above 75%.
AB - In this work we concentrate on a unique algorithm for watermarking, which is based on a modulo operation method. This method hides an integer number in the sum of the quantized DCT coefficients in a JPEG block. We use the Lagrangian optimization algorithm, which enables us to select the possible coefficients that will be changed in order to insert the watermark while controlling the bit rate and the distortion level (MSE). The uniqueness of this work is that by integrating the rate-distortion optimization method with the watermarking process we can control the rate of the watermarked image with minimum additional distortion. Initial results of our algorithm show that we can add 4-5 bits per DCT block (8x8 pixels), with a distortion level of 0.7 [dB] at JPEG compression quality above 75%.
KW - DCT domain watermarking
KW - JPEG
KW - Rate distortion
UR - https://www.scopus.com/pages/publications/50649125141
U2 - 10.1109/ISBMSB.2008.4536660
DO - 10.1109/ISBMSB.2008.4536660
M3 - Conference contribution
AN - SCOPUS:50649125141
SN - 9781424416493
T3 - IEEE International Symposium on Broadband Multimedia Systems and Broadcasting 2008, Broadband Multimedia Symposium 2008, BMSB
BT - IEEE International Symposium on Broadband Multimedia Systems and Broadcasting 2008, Broadband Multimedia Symposium 2008, BMSB
T2 - IEEE International Symposium on Broadband Multimedia Systems and Broadcasting 2008, Broadband Multimedia Symposium 2008, BMSB
Y2 - 31 March 2008 through 2 April 2008
ER -