Volume 4 Issue 5
Oct.  2011
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LIU Wei-ning. Dim target detection based on wavelet field diffusion filter[J]. Chinese Optics, 2011, 4(5): 503-508.
Citation: LIU Wei-ning. Dim target detection based on wavelet field diffusion filter[J]. Chinese Optics, 2011, 4(5): 503-508.

Dim target detection based on wavelet field diffusion filter

  • Received Date: 17 Jul 2011
  • Rev Recd Date: 18 Aug 2011
  • Publish Date: 25 Oct 2011
  • Basic principles of dim target detection based on the wavelet transform is analyzed. According to the multi-scale and multi-direction in the wavelet coefficients and combining with the selectable diffusion direction characters, a new method is designed to denoise and detect small targets by the diffusion filter in different directions and different scales of wavelet coefficients, respectively. Combined a anisotropic filter, the algorithm is used to a diffusion filtering experiment for wavelet coefficients. Results show that the algorithm can detect the dim target with a contrast of 2%, and has better performance in the detection of dim target, robustness to Gaussian noise and uneven backgrounds.

     

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