Abdulmawla Najih, S. A. R. Al-Haddad, Abd. Rahman bin Ramli, Shaiful J. Hashim, Mohammad Ali Nematollahi. Digital image watermarking based on angle quantization in discrete contourlet transform. J. King Saud Univ. Comput. Inf. Sci., 29(3):288-294, 2017. [doi]
Abstract is missing.