J4 ›› 2010, Vol. 37 ›› Issue (5): 817-824.doi: 10.3969/j.issn.1001-2400.2010.05.008

• Original Articles • Previous Articles     Next Articles

Automated image segmentation using the ULPCNN model with ultra-fuzzy entropy

LIU Qing1,2;XU Lu-ping1;MA Yi-de3;SU Zhe1;WANG Yong1   

  1. (1. School of Electronic Engineering, Xidian Univ., Xi'an  710071, China;
    2. School of Physics & Information Science, Tianshui Normal Univ., Tianshui  741001, China;
    3. School of Information Sci. & Eng., Lanzhou Univ., Lanzhou  730000, China)
  • Received:2009-06-29 Online:2010-10-20 Published:2010-10-11
  • Contact: LIU Qing E-mail:lqlzu@126.com

Abstract:

In order to process the binary segmentation of an image automatically, a new adaptive iterative image segmentation algorithm with the property of global threshold is proposed. Firstly, the two-dimensional ultra-fuzzy sets membership function, which is adaptively modified, is introduced into the concept of image ultra-fuzzy entropy. Secondly, the traditional pulse coupled neural networks (PCNN) model is improved to obtain the restraining capture Unit-Linking PCNN model with the monotony exponential raised threshold function from the point of view of image segmentation. Finally, the improved ULPCNN is combined with the criterion of maximum ultra-fuzzy entropy to process image segmentation automatically. A comparison is made between this algorithm and ULPCNN segmentation methods based on the criteria of maximum Shannon entropy, minimum cross entropy and minimum fuzzy entropy. Theoretical analysis and experimental simulations show that the proposed algorithm automatically determines the number of iterative times, chooses the best threshold, separates the objects in the image clearly, preserves most of the details, and enhances the performance of image segmentation.

Key words: image segmentation, maximum ultra-fuzzy entropy, ULPCNN, threshold functions, restrain and capture