Abstract
This paper proposes an implementation of the secant optimization method on the watermark embedding in DTCWTdomain. An objective function combining PSNR and NC (The Normalized Correlation) values calculated for a set of common attacks is used in the optimization process. The aim is to enhance the trade-off between robustness and imperceptibility against the various image processing attacks via an automatic and careful selectionof the scalingfactor using optimization. The watermark is inserted in the high energy bands ofDCT-transformed sub-vectors, which were generated from the DTCWT coefficient decomposition of the host image. Experimental results performed on a set of 512×512 greyscale images, show better results than the existing schemes for most common image attacks such as compression, low-pass filtering and noise addition
Recommended Citation
Lebcir, Mohamed; Awang, Suryanti; and Benziane, Ali
(2024)
"The optimal scaling factor based on SecantMethod for imagewatermarkingusing the hybrid DTCWT-DCT domain,"
Iraqi Journal for Computer Science and Mathematics: Vol. 5:
Iss.
1, Article 10.
DOI: https://doi.org/10.52866/ijcsm.2024.05.01.17
Available at:
https://ijcsm.researchcommons.org/ijcsm/vol5/iss1/10
