中国邮电高校学报(英文) ›› 2018, Vol. 25 ›› Issue (3): 55-64.doi: 10.19682/j.cnki.1005-8885.2018.0022

• Artificial Intelligence • 上一篇    下一篇

Image edge detection based on pulse coupled neural network and modulus maxima in non-subsampled contourlet domain

虎玲,常霞,钱伟   

  1. 北方民族大学
  • 收稿日期:2018-01-02 修回日期:2018-05-21 出版日期:2018-06-29 发布日期:2018-06-30
  • 通讯作者: 常霞 E-mail:changxia0104@163.com
  • 基金资助:
    中国国家自然科学基金;宁夏高等学校一流学科建设(数学学科)资助项目;北方民族大学研究生创新项目

Image edge detection based on pulse coupled neural network and modulus maxima in non-subsampled contourlet domain

  • Received:2018-01-02 Revised:2018-05-21 Online:2018-06-29 Published:2018-06-30
  • Supported by:
    National Nature Science Foundation of China;First-Class Disciplines Foundation of Ningxia;Graduate Innovation Project of North Minzu University

摘要: Edge is the intrinsic geometric structure of an image. Edge detection methods are the key technologies in the field of image processing. In this paper, a multi-scale image edge detection method is proposed to effectively extract image geometric features. A source image is decomposed into the high frequency directional sub-bands coefficients and the low frequency sub-bands coefficients by non-subampled contourlet transform (NSCT). The high frequency sub-bands coefficients are used to detect the abundant details of the image edges by the modulus maxima (MM) algorithm. The low frequency sub-band coefficients are used to detect the basic contour line of the image edges by the pulse coupled neural network (PCNN). The final edge detection image is reconstructed with detected edge information at different scales and different directional sub-bands in the NSCT domain. Experimental results demonstrate that the proposed method outperforms several state-of-art image edge detection methods in both visual effects and objective evaluation.

关键词: edge detection, modulus maxima, pulse coupled neural network, wavelet transform, non-subsampled contourlet transform

Abstract: Edge is the intrinsic geometric structure of an image. Edge detection methods are the key technologies in the field of image processing. In this paper, a multi-scale image edge detection method is proposed to effectively extract image geometric features. A source image is decomposed into the high frequency directional sub-bands coefficients and the low frequency sub-bands coefficients by non-subampled contourlet transform (NSCT). The high frequency sub-bands coefficients are used to detect the abundant details of the image edges by the modulus maxima (MM) algorithm. The low frequency sub-band coefficients are used to detect the basic contour line of the image edges by the pulse coupled neural network (PCNN). The final edge detection image is reconstructed with detected edge information at different scales and different directional sub-bands in the NSCT domain. Experimental results demonstrate that the proposed method outperforms several state-of-art image edge detection methods in both visual effects and objective evaluation.

Key words: edge detection, modulus maxima, pulse coupled neural network, wavelet transform, non-subsampled contourlet transform

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