Table 2.

Parameter setting in the experiments on sparse sampling sinograms

Method	Parameter settings
Linear interpolation [26]	5 points in each symmetric side are used in the interpolation
TV inpainting [7]	Inpainting time: 300; Positive shifting parameter: 1 × 10−6
Proposed inpainting	Size of patch P: 11 × 11; Number of discretized S-curves: 10; 11 points with the current point being the center are used in the calculation of the least Euclidean distance
TV-based CS reconstruction [21]	Iteration number: 500; β = 0.5; ε = 1 ×10−5