Automatic Change Detection Method of Multitemporal Remote Sensing Images Based on 2D-Otsu Algorithm Improved by Firefly Algorithm

Table 3

False alarms, missed alarms, and total errors for three difference methods in Dongting Lake.

Difference image acquisition methods	False alarms		Missed alarms		Total errors
	Pixels	%	Pixels	%	Pixels	%
Difference operator	4548	1.68%	11268	11.04%	15816	4.25%
Ratio operator	85119	31.53%	29885	29.27%	115004	30.91%
IMTF operator	1295	0.47%	36496	35.75%	37791	10.16%