An Adaptive Injection Model for Pansharpening

Table 1

Illustration of the fusion quality metrics.

	Full name	Description	RS/FS	Optimal
CC	Correlation coefficient	Evaluating spatial similarity between the two images	RS	—
UIQI	Universal image quality index	Representing a global fusion quality	RS	1
RMSE	Root mean square error	Representing the difference between the two images	RS	0
RASE	Relative average spectral error	Reflecting the spectral error of the fusion image	RS	0
SAM	Spectral angle mapper	Measuring the spectral distortion	RS	0
ERGAS	Error relative global adimensionnelle de synthese	Evaluating the spatial and spectral quality	RS	0
Q4/Q8	Q4 for a 4-band image, Q8 for an 8-band image	A vector extension of the Q-index to evaluating the global quality	RS	1
	—	Indicating spectral distortion	FS	0
	—	Indicating spatial distortion	FS	0
QNR	Quality with no reference	Comprehensive metric combining and	FS	1