Figure 5
From: Brain MR image denoising for Rician noise using pre-smooth non-local means filter
Images of a patient with meningiomais, T2- and PD- weighted MRI are registered to T1 weighted MRI, which is clear and easy to extract background. The background region of T1 weighted MRI is also the background region of registered T2- and PD- weighted MRI. (a) T2 weight MRI, (b) PD weight MRI, and (c) T1 weight MRI, (d) the result of the median filtering for T1 weight MRI, (e) the result of the corresponding morphological close operation, and (f) the final result of the background (dark region).