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Abstract line drawings from photographs using flow-based filters
Shandong Wang1,2,3; Enhua Wu1,2,3; Youquan Liu4; Xuehui Liu1; Yanyun Chen1
Source PublicationComputers & Graphics

This paper presents a non-photorealistic rendering technique for stylizing a photograph in the line drawing style. We first construct a smooth and direction-enhancing edge flow field from the eigenvectors of the smoothed structure tensor, and then we use the flow field to guide the line drawing process. In particular, we develop a new operator for detecting step edges, which outperforms the existing edge detectors in terms of feature preservation and edge localization. Our approach works by applying the proposed detector in the direction perpendicular to the edge flow tangent and then smoothing the intermediate results along the edge flow curve. Optionally, an anisotropic nonlinear filter with an elliptical kernel is incorporated into the algorithms to extract the line edges, which may extend our technique further for creating an image to convey a hand-painting style. The presented algorithms are all highly parallel, allowing a real-time performance with GPU implementation. Experimental results show that our approach can produce more attractive and impressive line illustrations with a variety of photographs.

KeywordNon-photorealistic Rendering Line Drawing Edge Detection Flow-based Filtering
URLView the original
Indexed BySCI
WOS Research AreaComputer Science
WOS SubjectComputer Science, Software Engineering
WOS IDWOS:000303695300003
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Cited Times [WOS]:12   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionFaculty of Science and Technology
Corresponding AuthorShandong Wang; Enhua Wu
Affiliation1.State Key Laboratory of Computer Science, Institute of Software, Chinese Academy of Sciences, Beijing 100190, China
2.Department of Computer and Information Science, University of Macau, Macau, China
3.Graduate University of Chinese Academy of Sciences, Beijing 100190, China
4.School of Information Engineering, Chang’an University, Xi’an, China
First Author AffilicationUniversity of Macau
Corresponding Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Shandong Wang,Enhua Wu,Youquan Liu,et al. Abstract line drawings from photographs using flow-based filters[J]. Computers & Graphics,2012,36(4):224-231.
APA Shandong Wang,Enhua Wu,Youquan Liu,Xuehui Liu,&Yanyun Chen.(2012).Abstract line drawings from photographs using flow-based filters.Computers & Graphics,36(4),224-231.
MLA Shandong Wang,et al."Abstract line drawings from photographs using flow-based filters".Computers & Graphics 36.4(2012):224-231.
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