Coherence-enhancing line drawing for color images
WANG ShanDong1,2,3; MA ZiYang1,3; LIU XueHui1; CHEN YanYun1; WU EnHua1,2,3
Source PublicationScience China Information Sciences

Line drawing plays an important role in many image-based non-photorealistic applications. However, most existing approaches use a grayscale edge detector for line extraction, so that only luminance differences between nearby image pixels is taken into account, but the chrominance differences is ignored. This leads to the undesirable consequence that visually significant edges in adjacent regions with different colors of similar luminance cannot be detected. To address this limitation, we present a novel enhanced line drawing method based on a flow-based difference-of-Gaussians (FDoG) filter. Because of an inherent property of the thresholded DoG edge model, captured lines may appear dislodged from the true edges in the image. To this end, we provide a gradient-guided warping technique so that smooth and coherent lines can be extracted in the correct location. The GPU implementation of the proposed algorithms allows real-time performance, and experimental examples with various color images demonstrate the method's superior qualitative performance over previous approaches. 

KeywordCoherence-enhancing Fdog Filter Line Drawing Non-photorealistic Rendering Real-time Computation
URLView the original
Indexed BySCI
WOS Research AreaComputer Science ; Engineering
WOS SubjectComputer Science, Information Systems ; Engineering, Electrical & Electronic
WOS IDWOS:000329537800007
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Cited Times [WOS]:2   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Corresponding AuthorWANG ShanDong
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, Macao, China;
3.Graduate University of Chinese Academy of Sciences, Beijing 100190, China
First Author AffilicationUniversity of Macau
Corresponding Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
WANG ShanDong,MA ZiYang,LIU XueHui,et al. Coherence-enhancing line drawing for color images[J]. Science China Information Sciences,2013,56(110903):1-11.
APA WANG ShanDong,MA ZiYang,LIU XueHui,CHEN YanYun,&WU EnHua.(2013).Coherence-enhancing line drawing for color images.Science China Information Sciences,56(110903),1-11.
MLA WANG ShanDong,et al."Coherence-enhancing line drawing for color images".Science China Information Sciences 56.110903(2013):1-11.
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