Smoothed Norm Regularization for Sparse-View X-Ray CT Reconstruction

Figure 5

The difference between the reconstructed image and the original image (OI) of the human head slice. From top to bottom, there are noiseless and simulated noisy scenarios in turn. From left to right, the reconstruction algorithms are FBP, TV, and SL0, respectively. The display window is  HU.

(a)

(b)

(c)

(d)

(e)

(f)