Digital fundus images (DFI) are obtained from the retina and graded by Ophthalmologists. Diabetic retinopathy (DR) is a common retinal complication associated with diabetes, that may result in permanent blindness. Progression of DR is assessed by its severity, which in turn determines the frequency of examinations. Computer assisted monitoring has been a demand of the hour as there is a significant shortage of professional observers. Fast assessment of blood vessel network plays an important role in a variety of medical disorders. To extract blood vessels from DFI, image enhancement techniques, morphological operations and post-segmentation processes were employed to generate a segmented binary image. Keywords— Digital fundus image, Diabetic retinopathy, morphological operations.