A novel reversible data hiding scheme based on difference-histogram modification and optimal EMD algorithm. Nguyen, T., Chang, C., & Huynh, N. Journal of Visual Communication and Image Representation, 33:389–397, 2015.
bibtex   
@article{nguyen_novel_2015,
	title = {A novel reversible data hiding scheme based on difference-histogram modification and optimal {EMD} algorithm},
	volume = {33},
	journal = {Journal of Visual Communication and Image Representation},
	author = {Nguyen, Thai-Son and Chang, Chin-Chen and Huynh, Ngoc-Tu},
	year = {2015},
	pages = {389--397},
}

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