Table 4 Required memory space (KB), elapsed time (ms ) and number of required iterations to reach the error of 10 −3 for the HDR imaging problem
From: Weighted gradient domain image processing problems and their iterative solutions
Image size | Â | CG | ILU0 | MILU | MILUC | Proposed |
|---|---|---|---|---|---|---|
1025×769 | mem | 163,688 | 255,572 | 241,785 | N/A | 110,488 |
| Â | time | N/M | 53.9044 | 6.2435 | N/A | 5.5096 |
| Â | iters | N/M | 384 | 43 | N/A | 17 |
250×150 | mem | 4,012 | 5,428 | 5,768 | 13,232 | 3,528 |
| Â | time | N/M | 0.4574 | 0.0936 | 11.3748 | 0.0516 |
| Â | iters | N/M | 148 | 26 | 15(2.32) | 8 |