Improved image filter based on SPCNN
By extraction of the thoughts of non-linear model and adaptive model match, an improved Nagao filter is brought. Meanwhile a technique based on simplified pulse coupled neural network and used for noise positioning, is put forward. Combining the two methods above, we acquire a new method that can restore images corrupted by salt and pepper noise. Experiments show that this method is more preferable than other popular ones, and still works well while noise density fluctuates severely.
KeywordsNagao filter pulse coupled neural network image smoothing image de-noising salt and pepper noise edge preserving
Unable to display preview. Download preview PDF.
- 1.Davis L S, Rosenfeld A. Noise cleaning by iterated local averaging. IEEE Trans Syst, Man and Cybernetics, 1978, (7): 705–710Google Scholar
- 3.Brownrigg D R K. The weighted median filter. Commun Associat Comput Mach, 1984, 27(8): 807–818Google Scholar
- 5.Agaian S, Choi D S, Noonan J. Image compression using fuzzy subband decomposition. In: Yeneds J, ed. FUZZ-IEEE 2000-95th IEEE International Conference on Fuzzy Syst, San Antonio, TX, USA: Institute of Electrical and Electronics Engineers Inc, 2004. 894–899Google Scholar
- 8.Yuan S Q, Tan Y H. A median-subset-type adaptive median filter. J Imag Graph, 2007, 12(4): 608–612Google Scholar
- 10.Makoto N, Takashi M. Edge preserving smoothing. Comput Graph Imag Proc, 1979, (9): 394–407eGoogle Scholar
- 11.Zhu J H, Yang X, Li J, et al. Texture analysis based detail preserving smoothing filter. J Imag Graph, 2001, 6(11): 1058–1064Google Scholar
- 13.Gu X D, Guo S D, Yu D H. A new approach for noise reducing of image based on PCNN. J Electr Info Tech, 2002, 24(10): 1304–1309Google Scholar
- 14.Li Y G, Shi M H, Wei Y W. Image Gauss noise filtering based on PCNN. Comput Engin Appl, 2007, 43(1): 65–68Google Scholar
- 15.Shi M H, Mao J H, Liang Y. Method for filtering image contaminated with strong Gaussian noise. Comput Appl, 2007, 27(7): 637–640Google Scholar
- 16.Wang W, Li M, Liu G H. New color image filtering algorithm based on PCNN. Comput Engin Design, 2007, 28(14): 3413–3415Google Scholar
- 17.Ma Y D, Shi F, Li L. Gaussian noise filter based on PCNN. IEEE ICNNSP, 2003Google Scholar