Abstract
To alleviate excessive smoothing of high signal-to-noise ratio (SNR) regions which are correspond to the structural features of MR images by using classical anisotropic diffusion (AD) filter. A novel AD filter called SNR controlled anisotropic diffusion is proposed. In this filter, an adaptive diffusivity function which is based on the correction factor of MR images was constructed. This adaptive diffusivity function of the proposed filter could control smoothing speed in terms of varying of SNR values in space and time scale until smoothing stop. The experimental results verify the effectiveness of novel AD filter.
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