Figure 7. Comparison of CGS-BTF, CTMG-CGS and ECTMG-CGS for tree(128 × 128).

From

Cascadic Tensor Multigrid Method and Economic Cascadic Tensor Multigrid Method for Image Restoration Problems

Ziqi Yan, Chenliang Li, Yuhan Chen

American Journal of Numerical Analysis. 2023, 7(1), 1-8 doi:10.12691/ajna-7-1-1