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Image magnification method using joint diffusion
Liu, ZX; Wang, HJ; Peng, SL
Source PublicationJOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY
2004-09-01
Volume19Issue:19Pages:698–707
SubtypeArticle
AbstractIn this paper a new algorithm for image magnification is presented. Because linear magnification/interpolation techniques diminish the contrast and produce sawtooth effects, in recent years, many nonlinear interpolation methods, especially nonlinear diffusion based approaches, have been proposed to solve these problems. Two recently proposed techniques for interpolation by diffusion, forward and backward diffusion (FAB) and level-set reconstruction (LSR), cannot enhance the contrast and smooth edges simultaneously. In this article, a novel Partial Differential Equations (PDE) based approach is presented. The contributions of the paper include: firstly, a unified form of diffusion joining FAB and LSR is constructed to have all of their virtues; secondly, to eliminate artifacts of the joint diffusion, soft constraint takes the place of hard constraint presented by LSR; thirdly, the determination of joint coefficients, criterion for stopping time and color image processing are also discussed. The results demonstrate that the method is visually and quantitatively better than Bicubic, FAB and LSR.
KeywordImage Magnificationnonlinear Diffusionjoint Diffusionforward-and-backward Diffusionlevel-set Reconstruction
WOS HeadingsScience & Technology ; Technology
WOS KeywordANISOTROPIC DIFFUSION ; SHOCK FILTERS ; INTERPOLATION ; RESTORATION ; SIGNAL
Indexed BySCI
Language英语
WOS Research AreaComputer Science
WOS SubjectComputer Science, Hardware & Architecture ; Computer Science, Software Engineering
WOS IDWOS:000224137200016
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ia.ac.cn/handle/173211/9028
Collection09年以前成果
Corresponding AuthorLiu, ZX
Recommended Citation
GB/T 7714
Liu, ZX,Wang, HJ,Peng, SL. Image magnification method using joint diffusion[J]. JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY,2004,19(19):698–707.
APA Liu, ZX,Wang, HJ,&Peng, SL.(2004).Image magnification method using joint diffusion.JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY,19(19),698–707.
MLA Liu, ZX,et al."Image magnification method using joint diffusion".JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY 19.19(2004):698–707.
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