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A review of exudates detection using retinal images

Diabetic Retinopathy is an eye disease caused due to the complications of diabetes. Lot of researchers are working in this area for designing automated system for exudates detection in early stages which is otherwise very difficult, since diabetic retinopathy is asymptotic in its early stages. This paper reviews various techniques that have been proposed in the field of digital image processing for the detection of exudates. There are basically two steps in the detection of diabetic retinopathy:- preprocesssing, feature extraction and classification of exudates. This paper discusses various techniques employed for exudates detection.