Wavelet-Based Adaptive Anisotropic Diffusion Filter
Its multiplicative nature complicates speckle noise reduction in images because of the effort required for separation of noisy pixels from other pixels. In this study, a novel adaptive anisotropic diffusion filter algorithm based on Haar wavelet transform has been proposed. Initially, Haar transfo...
Main Authors: | , |
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Format: | Article |
Language: | English |
Published: |
Stefan cel Mare University of Suceava
2018-11-01
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Series: | Advances in Electrical and Computer Engineering |
Subjects: | |
Online Access: | http://dx.doi.org/10.4316/AECE.2018.04012 |
Summary: | Its multiplicative nature complicates speckle noise reduction in images because of the effort required
for separation of noisy pixels from other pixels. In this study, a novel adaptive anisotropic diffusion
filter algorithm based on Haar wavelet transform has been proposed. Initially, Haar transform of image
to be filtered was taken and then median absolute deviation of wavelet coefficients was used to tune
the conductance parameter, K of diffusion filter with different diffusion functions. The suggested
strategy has been tested with different images and different noise variances. Moreover, experimental
results have been compared with conventional diffusion filters, and also Lee filter and Wiener filter
which are frequently used for despeckling. |
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ISSN: | 1582-7445 1844-7600 |