TY - GEN
T1 - Non-uniform quantizer design for image data hiding
AU - Liu, Ning
AU - Subbalakshmi, K. P.
PY - 2004
Y1 - 2004
N2 - Most quantizer based data hiding schemes use uniform quantizer, which is not optimal if the host signal is not uniformly distributed. In this paper, we design a quantizer that is not only pdf-matched but also more suited to embedding than the Linde-Buzo-Gray (Lloyd-Max) algorithm for vector (scalar) quantizer design. Experimental results shows that the proposed scheme provides better trade-offs between robustness to attacks, embedding induced distortion and embedding capacity than a simple pdf-matched scheme. The proposed algorithm also shows about 3dB improvements in embedding distortion over other popular quantizer based embedding algorithms.
AB - Most quantizer based data hiding schemes use uniform quantizer, which is not optimal if the host signal is not uniformly distributed. In this paper, we design a quantizer that is not only pdf-matched but also more suited to embedding than the Linde-Buzo-Gray (Lloyd-Max) algorithm for vector (scalar) quantizer design. Experimental results shows that the proposed scheme provides better trade-offs between robustness to attacks, embedding induced distortion and embedding capacity than a simple pdf-matched scheme. The proposed algorithm also shows about 3dB improvements in embedding distortion over other popular quantizer based embedding algorithms.
UR - http://www.scopus.com/inward/record.url?scp=20444448532&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=20444448532&partnerID=8YFLogxK
U2 - 10.1109/ICIP.2004.1421528
DO - 10.1109/ICIP.2004.1421528
M3 - Conference contribution
AN - SCOPUS:20444448532
SN - 0780385543
T3 - Proceedings - International Conference on Image Processing, ICIP
SP - 2179
EP - 2182
BT - 2004 International Conference on Image Processing, ICIP 2004
T2 - 2004 International Conference on Image Processing, ICIP 2004
Y2 - 18 October 2004 through 21 October 2004
ER -