Table 1 Percent relative computational times of the NVCA and moving average (MA) filters calculated with respect to the computational time of VBM4D, taken as reference
From: Real-time algorithm for Poissonian noise reduction in low-dose fluoroscopy: performance evaluation
Spatial mask dimension | 3 × 3 | 5 × 5 | 7 × 7 | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Temporal mask dimension | 1 | 2 | 3 | 5 | 7 | 9 | 1 | 2 | 3 | 5 | 7 | 9 | 1 | 2 | 3 | 5 | 7 | 9 |
NVCA-to-VBM4D computation time (%) | 1.5 | 2.1 | 2.4 | 3.1 | 3.7 | 4.3 | 2.7 | 3.9 | 4.7 | 6.6 | 8.5 | 10.0 | 4.7 | 6.4 | 8.1 | 11.7 | 15.2 | 18.3 |
MA-to-VBM4D computation time (%) | 1.1 | 1.2 | 1.2 | 1.3 | 1.4 | 1.5 | 1.1 | 1.4 | 1.7 | 2.1 | 2.3 | 2.7 | 1.6 | 2.0 | 2.5 | 3.1 | 3.7 | 4.3 |