View-Dependent line drawings for 3d scenes

Authors:
Xin Zhang;Zi'ang Ding;Chuan Zhu;Wei Chen;Qunsheng Peng
Affiliations:
State Key Lab. of CAD&CG, Zhejiang University, Hangzhou, P.R.China;State Key Lab. of CAD&CG, Zhejiang University, Hangzhou, P.R.China;State Key Lab. of CAD&CG, Zhejiang University, Hangzhou, P.R.China;State Key Lab. of CAD&CG, Zhejiang University, Hangzhou, P.R.China;State Key Lab. of CAD&CG, Zhejiang University, Hangzhou, P.R.China
Venue:
Transactions on Edutainment VII
Year:
2012

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Abstract

We present a novel density control algorithm to achieve interactive line drawing of 3D scenes. The kernel of our approach is a line selection method that considers both the geometry property of lines and the view-dependent line density in the image space. The latter is measured as a combination of a local entropy and a global entropy subject to the information theory. The view-dependent line drawing is fulfilled by leveraging two entropies, facilitating the preservation of details in important regions. We demonstrate our new approach with a variety of examples and provide comparisons with recent approaches.