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

Table 1

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

Difference image acquisition methods	False alarms		Missed alarms		Total errors
	Pixels	%	Pixels	%	Pixels	%
Difference operator	4945	2.59%	8636	12.44%	13581	5.22%
Ratio operator	10142	5.32%	7670	11.05%	17812	6.85%
IMTF operator	3204	1.68%	12499	18.01%	15703	6.04%