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 多相主动轮廓模型的眼底图像杯盘分割 Alternative Title Automatic segmentation of optic disc and cup using multiphase active contour model in fundus images 郑姗; 范慧杰; 唐延东; 王琰 Department 机器人学研究室 Source Publication 中国图象图形学报 ISSN 1006-8961 2014 Volume 19Issue:11Pages:1604-1612 Indexed By CSCD CSCD ID CSCD:5289611 Contribution Rank 1 Funding Organization 沈阳市科技创新专项资金项目 Keyword 眼底图像 杯盘分割 C-v模型 椭圆形约束多相主动轮廓模型 多相水平集函数 Abstract 目的：视盘及视杯的检测对于分析眼底图像和视网膜视神经疾病计算机辅助诊断来说十分重要,利用医学眼底图像中视盘和视杯呈现椭圆形状这一特征,提出了椭圆约束下的多相主动轮廓模型,实现视盘视杯的同时精确分割。方法：该算法根据视盘视杯在灰度图像中具有不同的区域亮度,建立多相主动轮廓模型,然后将椭圆形约束内嵌于该模型中。通过对该模型的能量泛函进行求解,得到椭圆参数的演化方程。分割时首先设定两条椭圆形初始曲线,根据演化方程,驱动曲线分别向视盘和视杯方向进行移动。当轮廓线到达视盘、视杯边缘时,曲线停止演化。结果：在不同医学眼底图像中对算法进行验证,对算法抗噪性、不同初始曲线选取等进行了实验,并与多种算法进行了对比。实验结果表明,本文模型能够同时分割出视盘及视杯,与其他模型的分割结果相比,本文算法的分割结果更加准确。结论：本文算法可以精确分割医学眼底图像中的视盘和视杯,该算法不需要预处理,具有较强的鲁棒性和抗噪性。 Other Abstract The detection of optic disc and cup is important in fundus image analysis and in the computer—aided　diagnosis of optic nerve disease．In this study，an elliptical multiphase active contour model is proposed based on the oval　shape of the optic disc and cup．The proposed algorithm can segment the optic disc and cup simultaneously and exactly．　Method First，a multiphase active contour model is developed based on gray images of the optic disc and cup with different　brightness levels．Afterward，the oval constraints are embedded in the model．The parametric equation of an ellipse　can be obtained by finding the solution for the energy function of the model．Two oval initial curves are initially set．The　evolution equation drive curves move toward the direction of the optic disc and cup．The curve evolution stops upon reaching　the object contour border．Result The proposed algorithm is validated through experiments on its anti—noise ability　and on the selection of different initial curves using different medical fundus images．The obtained results are compared　with those of other algorithms．The experimental results show that unlike other models，the proposed model can simultaneously segment the optic disc and cup．The approach proposed in this paper can achieve superior image segmentation results．　Conclusion A novel image segmentation method is presented in this work．The experimental results show that the　method can accurately segment the optic disc and cup．The algorithm is proven to be not pretreatment，robust，and efficient． Language 中文 Citation statistics Document Type 期刊论文 Identifier http://ir.sia.cn/handle/173321/15474 Collection 机器人学研究室 Affiliation 1.沈阳理工大学信息科学与工程学院2.中国科学院沈阳自动化研究所,机器人学国家重点实验室 Recommended CitationGB/T 7714 郑姗,范慧杰,唐延东,等. 多相主动轮廓模型的眼底图像杯盘分割[J]. 中国图象图形学报,2014,19(11):1604-1612. APA 郑姗,范慧杰,唐延东,&王琰.(2014).多相主动轮廓模型的眼底图像杯盘分割.中国图象图形学报,19(11),1604-1612. MLA 郑姗,et al."多相主动轮廓模型的眼底图像杯盘分割".中国图象图形学报 19.11(2014):1604-1612.