From: A de-noising method based on L0 gradient minimization and guided filter for ancient Chinese calligraphy works on steles
Methods
AOQI
Zheng’s method [1]
0.6795
Zhang’s method [10]
0.6865
L0 gradient minimization [13]
0.6538
BM3D [17]
0.6802
Our prior work [11]
0.6895
Prior work [12]
0.6905
Proposed method
0.7056
