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首页> 外文期刊>Journal of Digital Imaging >Group Average Difference: A Termination Criterion for Active Contour
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Group Average Difference: A Termination Criterion for Active Contour

机译：组平均差：主动轮廓的终止标准

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摘要

This paper presents a termination criterion for active contour that does not involve alteration of the energy functional. The criterion is based on the area difference of the contour during evolution. In this criterion, the evolution of the contour terminates when the area difference fluctuates around a constant. The termination criterion is tested using parametric gradient vector flow active contour with contour resampling and normal force selection. The usefulness of the criterion is shown through its trend, speed, accuracy, shape insensitivity, and insensitivity to contour resampling. The metric used in the proposed criterion demonstrated a steadily decreasing trend. For automatic implementation in which different shapes need to be segmented, the proposed criterion demonstrated almost 50% and 60% total time reduction while achieving similar accuracy as compared with the pixel movement-based method in the segmentation of synthetic and real medical images, respectively. Our results also show that the proposed termination criterion is insensitive to shape variation and contour resampling. The criterion also possesses potential to be used for other kinds of snakes.
机译：本文提出了主动轮廓的终止准则，该准则不涉及能量功能的改变。该标准基于演变过程中轮廓的面积差异。在该标准中，当面积差围绕常数波动时，轮廓的演变终止。使用带有轮廓重采样和法向力选择的参数梯度矢量流活动轮廓来测试终止标准。通过其趋势，速度，准确性，形状不敏感度和对轮廓重采样的不敏感度来显示该准则的有用性。拟议标准中使用的度量标准显示出稳步下降的趋势。对于需要分割不同形状的自动实现，所提出的标准与在合成医学图像和真实医学图像的分割中分别基于像素移动的方法相比，展示了近50％和60％的总时间减少，同时达到了相似的精度。我们的结果还表明，提出的终止标准对形状变化和轮廓重采样不敏感。该标准还具有用于其他种类的蛇的潜力。

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  • 来源
    《Journal of Digital Imaging》 |2012年第2期|p.279-293|共15页
  • 作者

    Tong Kuan Chuah; Jun Hong Lim; Chueh Loo Poh;

  • 作者单位

    Division of Bioengineering, School of Chemical &amp Biomedical Engineering, Nanyang Technological University, N1.3-B2-09, 70 Nanyang Drive, Singapore, 637457, Singapore;

    Division of Bioengineering, School of Chemical &amp Biomedical Engineering, Nanyang Technological University, N1.3-B2-09, 70 Nanyang Drive, Singapore, 637457, Singapore;

    Division of Bioengineering, School of Chemical &amp Biomedical Engineering, Nanyang Technological University, N1.3-B2-09, 70 Nanyang Drive, Singapore, 637457, Singapore;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Termination criterion; Active contour; Gradient vector flow; Area difference; Group average;

    机译：终止准则;活动轮廓;梯度矢量流;面积差;群均值;

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