中文说明：视盘（OD）的自动检测是眼睛图像自动处理的关键步骤。本文介绍
English Description：
Automatic detection of optic disc (OD) is a crucial step in automated eye image processing. In this paper we present a novel method that utilizes the fact that ODs exhibit similar characteristics like circular shape and serves as the region where blood vessels and nerves converge. A dictionary with training patterns, built out of sub-images, with OD at the center, is utilized. For a given test image, the