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Identification of Microaneurysms by Using Spatial Shade Correction and Wavelet Transform
Sukritta Paripurana,Werapon Chiracharit,Kosin Chamnongthai 대한전자공학회 2009 ITC-CSCC :International Technical Conference on Ci Vol.2009 No.7
Diabetic Retinopathy (DR) is a serious complication of diabetes. It causes to a loss of vision in diabetic patients. The earlier stage of DR is diagnosed, the more successful the patients will be cured. This paper proposes a method to indentify microaneurysms (MAs) in fundus image by using spatial shade correction and removal of vessels in wavelet domain. The spatial background is estimated and removed from the original image. Vessels are defined as the connected edges in directional wavelet subbands. The inversed transform image without vessel coefficients is then finally correlated to the shade corrected image. The output image show prominent microaneurysms.