Quality Assessment of Four DEMs Generated Using In-Track KOMPSAT-3 Stereo Images

Table 5

Sensor Modeling Accuracy of check point data.

Parameter		DEM 1	DEM 2	DEM 3	DEM 4
Vertical accuracy	Mean error ( Z coordinate) (m)	-0.4	-8.9	-8.9	4.4
	RMSE (Z coordinate) (m)	1.4	10.4	10.4	5.9
	LE90 (m)	2.2	16.1	16.1	4.5
Horizontal accuracy	Mean error (X coordinate) (m)	-0.1	67.3	67.3	6.1
	RMSE (X coordinate) (m)	0.6	67.3	67.2	6.2
	Mean error (Y coordinate) (m)	-0.1	-93.2	-93.2	5.6
	RMSE (Y coordinate) (m)	0.4	93.2	93.2	5.6
	CE90 (m)	1.0	114.3	114.3	8.9

RMSE, root mean square; LE90, linear error at 90%; CE90, circular error at 90%