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

Table 2

Comparison of FT, WT, BT, and GDF based on RMSE, PSNR, and SD.

Evaluation metrics	FT	WT	BT	GDF
RMSE	0.0231	0.0228	0.0231	0.0184
PSNR	51.5301	63.6604	49.376	46.698
SD	0.2625	0.2623	0.2624	0.2622