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融合局部和全局图像信息的活动轮廓模型 被引量:30

Active Contours Driven by Local and Global Image Fitting Energy
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摘要 为了克服局部图像拟合模型对轮廓初始化敏感的不足,结合改进C-V模型,提出一种融合局部和全局图像信息的活动轮廓模型.首先由改进C-V模型的全局灰度拟合力和局部图像拟合模型的局部灰度拟合力的一个线性组合来构造水平集演化力,然后通过调整这2个拟合力的权重以提升该模型对轮廓初始化的灵活性,最后利用高斯滤波正则水平集函数法实现水平集函数的正则化.实验结果表明,对于一些真实和人造图像,文中模型显示了对轮廓初始化的鲁棒性,以及较好地处理灰度不均图像的能力. An active contour model combining both local and global image information is proposed in this paper to alleviate the high sensitivity on the contour initialization of the local image fitting(LIF) model.First,the force of level set evolution is defined as a linear combination of the global intensity fitting force based on the improved C-V model and the local intensity fitting force based on the LIF model.Then,by appropriately choosing the weights of the forces,our proposed model allows flexible initialization of the contours.Finally,Gaussian filtering regularized level set method is employed to regularize the level set function.Experimental results on both real and synthetic images show that the proposed model is robust to the contour initialization,while having the ability of handling intensity inhomogeneity.
出处 《计算机辅助设计与图形学学报》 EI CSCD 北大核心 2012年第3期364-371,共8页 Journal of Computer-Aided Design & Computer Graphics
基金 重庆市科委自然科学基金计划资助项目(2010BB9218)
关键词 图像分割 活动轮廓模型 C-V模型 局部图像拟合模型 灰度不均 image segmentation active contour model C-V model local image fitting model intensity inhomogeneity
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参考文献11

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二级参考文献30

共引文献52

同被引文献251

  • 1李培华,张田文.主动轮廓线模型(蛇模型)综述[J].软件学报,2000,11(6):751-757. 被引量:125
  • 2闵莉,李小毛,唐延东.一种改进的无需水平集重新初始化的C-V主动轮廓模型(英文)[J].光电工程,2006,33(9):52-58. 被引量:12
  • 3胡波,毛罕平,张艳诚.基于二维直方图的杂草图像分割算法[J].农业机械学报,2007,38(4):199-202. 被引量:25
  • 4唐利明,何传江,申小娜.几何活动轮廓模型的多尺度扩散分割算法[J].计算机辅助设计与图形学学报,2007,19(5):661-666. 被引量:9
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