Table 3. Comparison of processing resources consumed by each of the three filters evaluated using a synthetic volume (385×512×128 voxels) contaminated with different levels of Gaussian and impulse noise.
| CPU timeTotala (filter)sec | MemoryMb | No. of adjustableparameters | |
| 3D BLE | 169 (63) | 240.8 | 0 |
| 3D recursive | 186 (11) | 221.6 (272) | 0 |
| 3D Canny | 21b | 485.0 | 3 |
a
Total processing time includes pre-processing and post processing.
b
Although the run time of the Canny filter is short, the process is not automated.