Lu Hao, Jie Feng, Bingfeng Zhou. Automatic Color-to-Gray Conversion for Digital Images in Gradient Domain. In José Braz, Julien Pettré, Paul Richard, editors, GRAPP 2015 - Proceedings of the 10th International Conference on Computer Graphics Theory and Applications, Berlin, Germany, 11-14 March, 2015. pages 231-238, SciTePress, 2015. [doi]
Abstract is missing.