GDF: A Novel Image Fusion Approach for Compelling Depiction of Earthly Features

Table 3

Comparison of FT, WT, BT, and GDF based on correlation coefficient.

Fusion method	Red band	Green band	Blue band
FT	0.8456	0.8285	0.8477
WT	0.8489	0.8284	0.8440
BT	0.8741	0.8702	0.8680
GDF	0.8762	0.8650	0.8792