Automatic Extraction of Two Regions of Creases from Palmprint Images for Biometric Identification

Table 2

Sensitivity, specificity, and accuracy obtained from 101 input images.

		ROI1	ROI2	Both regions
Sensitivity	Maximum value	0.9716	0.9782	0.9327
	3^rd quartile value	0.8837	0.8998	0.8601
	2^nd quartile (median) value	0.8349	0.8182	0.8317
	1^st quartile value	0.7715	0.7599	0.7804
	Minimum value	0.4389	0.5086	0.5033
	Average value	0.8164	0.8154	0.8159
Specificity	Maximum value	0.9998	0.9999	0.9991
	3^rd quartile value	0.9992	0.9993	0.9981
	2^nd quartile (median) value	0.9989	0.9988	0.9977
	1^st quartile value	0.9985	0.9984	0.9970
	Minimum value	0.9962	0.9967	0.9933
	Average value	0.9988	0.9988	0.9975
Accuracy	Maximum value	0.9996	0.9997	0.9982
	3^rd quartile value	0.9985	0.9987	0.9963
	2^nd quartile (median) value	0.9978	0.9976	0.9955
	1^st quartile value	0.9969	0.9968	0.9942
	Minimum value	0.9925	0.9935	0.9868
	Average value	0.9976	0.9975	0.9951