Optimal sibling similarity-based fundus image optic disc positioning method and system

The invention discloses an optimal sibling similarity-based fundus image optic disc positioning method and a system thereof. The method comprises the following steps: (1) selecting a healthy fundus image, and extracting an image in a minimum circumscribed rectangle as a template image, wherein the minimum circumscribed rectangle is in the healthy fundus image and contains an optic disc region; (2)preprocessing the template image and a to-be-matched image; (3) calculating an optimal sibling similarity between the template image and the to-be-matched image; (4) searching in the to-be-matched image, and determining a region corresponding to the maximum value of the optimal sibling similarity as a final positioning result. According to the invention, a new concept is provided for the positioning work of the fundus image optic disc, and a good effect is achieved. 本发明公开了基于最佳兄弟相似度的眼底图像视盘定位方法及系统，包括以下步骤：步骤(1)：选取健康的眼底图像，根据健康眼底图像的包含视盘区域的最小外接矩形，提取最小外接矩形内的图像作为模板图像；步骤(2)：对模板图像和待匹配图像均进行预处理；步骤(3)：计算模板图像和待匹配图像之间的最佳兄弟相似度；步骤(4)