Feature-Based Retinal Image Registration Using D-Saddle Feature

Table 1

Details of the characteristics of each category in FIRE dataset.

Details	Category	Category	Category
Total pairs	71	49	14
Application	Super-resolution	Mosaicking	Longitudinal study
Anatomical changes	No	No	Yes
Pathological cases	Yes	Yes	Yes
Resolution	2912 × 2912
Scale factor	≈1	≈1	≈1
Overlap (%)	86–100	17–89	95–100
Rotation (°)	0°–5°	0°–7°	0°–4°
MSE	13–1541	109–1048	42–1728
SSIM	0.788–0.939	0.784–0.938	0.799–0.933
UN	7–771	55–524	21–864

Average scale factor (camera zoom or magnification) between retinal fundus image pairs.