Automatic Detection of Optic Disc in Retinal Image by Using Keypoint Detection, Texture Analysis, and Visual Dictionary Techniques

Table 1

Retinal fundus image datasets.

Dataset name	Image size	The number of images
DIARETDB1	1500 × 1152 pixels	89
DRIVE	565 × 584 pixels	40
ROC	768 × 576 pixels,; ≈1394 × 1392 pixels, and; ≈1058 × 1061 pixels	100