Psychologists of the Gestalt school maintain that objects are recognized as wholes in a parallel procedure: the internal representation is matched with the retinalimage in a single operation.
The key process and difficulty to realize compute intelligent auxiliary diagnosis of retinalimage is how to automatically ac- quire the pathological information.
视网膜图像病变信息的计算机自动提取算法是计算机智能辅助诊断的关键和难点。
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Because both vessels and background are locally uniform in retinal images, there must be a threshold which is able to segment vessels precisely in a certain sub-image.