Abstract
Automated localization and detection of optic disc (OD) is essential step in the analysis of digital diabetic retinopathy systems. Retinal images give unique diagnostic about eye diseases. The detection of OD helps in early detection of proliferative diabetic retinopathy. In this paper two computerized optic disc localization and detection techniques are compared. First technique is uses edge detection method to localize the OD and Hough transform method to detect the OD. Second technique uses brightest region method for OD localization and LOG filtering method for OD detection. These techniques can be used to develop automated diagnostic system for OD localization and detection. We have used publicly available DRIVE and STARE databases for the testing of the two techniques. Experimental results showed that Hough transform technique gives better results.
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