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ID:55399688
大小:2.40 MB
页数:10页
时间:2020-05-15
《基于稀疏轮廓点模型的彩色重叠细胞图像分割.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、计算机研究与发展DOI:10.7544/issnlO00—1239.2015.20140324JournalofComputerResearchandDevelopment52(7):1682一I691,2015基于稀疏轮廓点模型的彩色重叠细胞图像分割关涛周东翔樊玮虹刘云辉(国防科学技术大学电子科学与工程学院长沙410073)(香港中文大学机械与自动化工程学系香港999077)(gtmike2003@126.com)—SegmentationofColorOverlappingCellsImageBasedonS
2、parseContourPointModelGuanTao,ZhouDongxiang,FanWeihong,andLiuYunhui(CollegeofElectronicScienceandEngineering,NationalUniversityofDeSenseTechnology,Changsha410073)。(DepartmentofMechanicalandAutomationEngineering,TheChineseUniversityofHongKong,HongKong999077)Ab
3、stractBasedontheanalysisofcellcontourstructure,asparsecontourpointmodel,whichcandescribethecharacteristicsofthecellcontour,isproposedinthispaper.Inthesparsecontourpointmodel,cellcontourisdividedinto2parts,namelylightcontouranddarkcontour,respectively;andthent
4、hecellcontourisapproximatelydescribedasasetofsparsecontourpoints.Basedonthismodel,thecolorandgrayscaleimagesegmentationtechniquesarecombinedtolocatethebasiccontour,whichliesbetweenthecellandthebackground.Then,acirculardynamiccontoursearchingmethodisproposedto
5、searchforthedarkcontourthatliesintheoverlappingcellregionalongthebasiccontour.Contourpointslocatedbythesearchingmethodarearrangedtoconstructtheinitialcontourofthegradientvectorflow(GVF)Snakemode1.ThentheGVFSnakemodelisperformedtoobtainthefinalaccuratesegmenta
6、tionresultofthecellimage.Variouscellimagescontainingsinglecell,overlappingcellsofsimilarcolorsandoverlappingcellsofdifferentcolorshavebeentestedtoshowthevalidityandeffectivenessoftheproposedmethod.Theproposedtechniquesareusefulforthedevelopmentofautomaticcerv
7、icalcellimageanalysissystems.Keywordsmedicalimageprocessing;overlappingcellimages;colorimagesegmentation;sparsecontourpointmodel;gradientvectorflow(GVF)Snakemodel摘要根据对细胞轮廓结构的分析,提出了描述细胞轮廓特征的稀疏轮廓点模型.该模型将细胞轮廓划分为强轮廓和弱轮廓2部分,并用一系列稀疏的轮廓点来近似表示细胞轮廓.在该模型的基础上,算法综合了彩色图像处
8、理与灰度图像处理的方法,首先提取细胞与背景交界处的强轮廓作为基准轮廓.然后提出了一种环形动态轮廓搜索算法,沿着基准轮廓搜索位于重叠细胞区域的弱轮廓.经过轮廓搜索算法获得细胞的稀疏轮廓点组成初始轮廓,采用GVF(gradientvectorflow)Snake模型进行细胞的精确分割.通过对2个细胞图像数据集的图像样本进行的分割实验验证了算法对于分割单细胞图像、同种颜色重叠细
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