abstract line drawings from photographs using flow-based filters

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	abstract line drawings from photographs using flow-based filters
	Wang Shandong; Wu Enhua; Liu Youquan; Liu Xuehui; Chen Yanyun
	2012
发表期刊	Computers and Graphics (Pergamon)
ISSN	978493
卷号	36 期号:4 页码:224-231
摘要	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. © 2012 Elsevier Ltd.
收录类别	ei
部门归属	(1) 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, China; (3) Graduate University of Chinese Academy of Sciences, Beijing 100190, China; (4) School of Information Engineering, Changan University, Xian, China
语种	英语
WOS记录号	WOS:000303695300003
引用统计
内容类型	期刊论文
URI标识	http://ir.iscas.ac.cn/handle/311060/14736
专题	中国科学院软件研究所
推荐引用方式 GB/T 7714	Wang Shandong,Wu Enhua,Liu Youquan,et al. abstract line drawings from photographs using flow-based filters[J]. Computers and Graphics (Pergamon),2012,36(4):224-231.
APA	Wang Shandong,Wu Enhua,Liu Youquan,Liu Xuehui,&Chen Yanyun.(2012).abstract line drawings from photographs using flow-based filters.Computers and Graphics (Pergamon),36(4),224-231.
MLA	Wang Shandong,et al."abstract line drawings from photographs using flow-based filters".Computers and Graphics (Pergamon) 36.4(2012):224-231.

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