Research Article
Automatic Detection of Optic Disc in Retinal Image by Using Keypoint Detection, Texture Analysis, and Visual Dictionary Techniques
Table 3
Quantitative results of the various methods.
| Authors | Technique | Dataset | Number of images | Accuracy (%) |
| Azam et al. [16] | Bright region and vessel density | DRIVE | 40 | 100 | Lu and Lim [17] | Iterative Savitzky-Golay smoothing procedure, thresholding, and morphologic operations | DIARETDB0 DIARETDB1 DRIVE | 259 | 96.91 (average) | Godse and Bormane [18] | Bright region and density criterion | DIARETDB1 DRIVE | 89 40 | 96.62 100 | Lupascu et al. [19] | Hough transform | DRIVE | 40 | 95 | Sekhar et al. [20] | Hough transform | DRIVE | 40 | 94.4 | Qureshi et al. [21] | Pyramidal decomposition, edge detection, entropy filter, and Hough transformation | DIARETDB1 DRIVE | 89 40 | 94.02 100 | Ying et al. [22] | Fractal method and local histogram | DRIVE | 40 | 97.5 | The proposed method | Bright region, keypoint detection, VD, and classification | DIARETDB1 DRIVE ROC | 89 40 100 | 94.38 95 90 |
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