Fig. 6From: An improved nonlinear diffusion in Laplacian pyramid domain for cone beam CT denoising during image-guided vascular interventionNoise and artifacts suppression in 3 levels of Laplacian pyramid for the degraded CBCT image. Left column shows the original image; right top row shows its 3 levels of Laplacian pyramid; right bottom row shows the restored Laplacian pyramid levels by MND filterBack to article page