Fig. 4From: An improved nonlinear diffusion in Laplacian pyramid domain for cone beam CT denoising during image-guided vascular interventionPerforms of PM and the MND processes on a ramp edge. a Original (top) and noisy ramp signal (bottom), b denoised signal from PM process (blue line) and the proposed MND process (red line) with 10, 50, 100 iterations from top to bottom, respectivelyBack to article page