M A, Umamakeswari A. A Robust Image Watermarking Method based on Contourlet Transform for Correcting Geometric Attacks. IJET [Internet]. 2018 Apr. 25 [cited 2024 May 5];7(2.24):24-8. Available from: https://www.sciencepubco.com/index.php/ijet/article/view/11992