Feature-Based Retinal Image Registration Using D-Saddle Feature

Table 6

Paired t-test between registration accuracy of D-Saddle and Saddle.

Paired differences D-Saddle−Saddle
	Mean difference	Std. deviation	95% confidence interval of the difference		t	df	value
			Lower	Upper
Overall	−3.360	4.252	−4.087	−2.634	−9.147	133	<0.001
Category	−0.371	0.434	−0.473	−0.268	−7.192	70	<0.001
Category	−8.214	3.314	−9.166	−7.262	−17.352	48	<0.001
Category	−1.532	1.485	−2.389	−0.675	−3.861	13	0.002

Significant at the 0.05 level.