An analytical method for the adaptive computation of threshold of gradient modulus in 2D anisotropic diffusion filter

• Autorzy: Joseph J. , Periyasamy R.

Identyfikatory

DOI

10.1016/j.bbe.2016.12.002

• Języki publikacji: EN

Abstrakty

EN

In spite of the extensive application of Anisotropic Diffusion (AD) filter in software packages for medical image analysis, denoising and edge preservation offered by it depends exclusively on the selection of the value of Threshold of Gradient Modulus (TGM). Tuning the TGM to its optimum value through trial and error is subjective and tiring. An analytical model to compute the optimum value of TGM adaptively from the mean gradient of the image itself is proposed in this article. The qualitative examination of the gradient and true edge maps of the original and restored Magnetic Resonance images revealed that analytically computed TGM ensures best trade-off between noise suppression and edge preservation.

Słowa kluczowe

EN

anisotropic diffusion; threshold of gradient modulus; nonlinear spatial filter; restoration; denoising

PL

dyfuzja anizotropowa; współczynnik gradientu; filtr przestrzenny nieliniowy; odszumianie

• Wydawca: Nałęcz Institute of Biocybernetics and Biomedical Engineering of the Polish Academy of Sciences ; Elsevier
• Czasopismo: Biocybernetics and Biomedical Engineering
• Rocznik: 2017
• Tom: Vol. 37, no. 1
• Strony: 1--10
• Opis fizyczny: Bibliogr. 31 poz., rys., tab., wykr.

Twórcy

autor

Joseph J.

• Department of Biomedical Engineering, National Institute of Technology, Raipur, Chhattisgarh 492010, India

autor

Periyasamy R.

• Department of Biomedical Engineering, National Institute of Technology, Raipur, Chhattisgarh 492010, India

Bibliografia

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).