@ARTICLE{Li:CWE:IJMDEM2014, author = {Roland Schmitz and Shujun Li and Christos Grecos and Xinpeng Zhang}, title = {Towards Robust Invariant Commutative Watermarking-Encryption based on Image Histograms}, journal = {International Journal of Multimedia Data Engineering and Management}, year = {2014}, volume = {5}, number = {4}, pages = {36-52}, doi = {10.4018/ijmdem.2014100103}, }