Detection of Hemorrhages in Colored Fundus Images Using Non Uniform Illumination Estimation

Hemorrhages are retinal lesions caused because of different eye diseases such as diabetic retinopathy, hypertensive retinopathy and macular oedema. This paper presents a novel method for detection of hemorrhages form digital fundus images. The proposed system consists of preprocessing, candidate hemorrhage detection, removing of false regions and hemorrhage detection. The proposed system also consists of illumination estimation using non uniform circular points grid for proper detection of hemorrhages. The evaluation of proposed system is done using publicly available fundus image databases along with some locally collected images. The analysis has been done at image level and results are compared with existing techniques for hemorrhage detection.

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