Ernawan, F., Ramalingam, M., Sadiq, A. S., & Mustaffa, Z. (2017). An Improved Imperceptibility and Robustness of 4x4 DCT-SVD Image Watermarking with a Modified Entropy. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), 9(2-7), 111–116. Retrieved from https://jtec.utem.edu.my/jtec/article/view/2602