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Pencil drawing production based on hybrid gradient minimization
Received date: 2016-05-01
Online published: 2018-05-07
Algorithms for creating pencil drawing effect from an image have two major problems: details are often missing so that important edge lines are not clearly shown, and lines are monotonous without hierarchical information. To solve these problems, this paper proposes a pencil drawing generation algorithm based on hybrid gradient minimization. By combining $L_0$ gradient minimization and $L_1$ norm, prominent edges are maintained and enhanced without affecting the overall sharpness. This way, rich and hierarchical details in the image are fully retained. Experimental results indicate that the proposed method can generate high quality and more realistic pencil drawing effect. It is superior to several other existing method.
WANG Quan, HU Yueli, YAN Ming, HU Yunsheng, CHEN Peng . Pencil drawing production based on hybrid gradient minimization[J]. Journal of Shanghai University, 2018 , 24(2) : 314 -321 . DOI: 10.12066/j.issn.1007-2861.1780
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