Learning hatching for pen-and-ink illustration of surfaces.

Evangelos Kalogerakis Derek Nowrouzezahrai Simon Breslav Aaron Hertzmann Learning hatching for pen-and-ink illustration of surfaces. 1 2012 31 ACM Trans. Graph. 1 http://doi.acm.org/10.1145/2077341.2077342 db/journals/tog/tog31.html#KalogerakisNBH12