Nisar Ahmed Memon, A Novel Reversible Watermarking Method based on Adaptive Thresholding and Companding Technique. journal = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology. July 2011, vol. 55(7). 738 - 742 [viewed 29 March 2024]. Available from: https://publications.waset.org/pdf/12926.