The Application of Wavelet-domain Hidden Markov Tree Model in Diabetic Retinal Image Denoising

  • Cui D
  • Liu M
  • Hu L
  • et al.
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Abstract

The wavelet-domain Hidden Markov Tree Model can properly describe the dependence and the correlation of fundus angiographic images’ wavelet coefficients among scales. Based on the construction of the fundus angiographic images from Hidden Markov Tree Models and Gaussian Mixture Models, this paper applied expectation-maximum algorithm to estimate the wavelet coefficients of original fundus angiographic images and the Bayesian estimation to achieve the goal of fundus angiographic images denoising. As is shown in the experimental result, compared with the other algorithms as mean filter and median filter, this method effectively improved the peak signal to noise ratio of fundus angiographic images after denoising and preserved the details of vascular edge in fundus angiographic images.

Figures

  • Table 1. PSNR values of image denoised by various methods.

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CITATION STYLE

APA

Cui, D., Liu, M., Hu, L., Liu, K., Guo, Y., & Jiao, Q. (2015). The Application of Wavelet-domain Hidden Markov Tree Model in Diabetic Retinal Image Denoising. The Open Biomedical Engineering Journal, 9(1), 194–198. https://doi.org/10.2174/1874120701509010194

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