Abstract
Digital image enhancement and restoration techniques have been used in noninvasive diagnostic radiographic imaging for quite some time.1 Application of digital image processing to enhance fundus photographs is relatively recent. Basic problems in standardization, restoration of fundus images and development of an optimal image enhancement procedure for specific applications are being presently investigated by researchers.2,3,6 Enhancement of fundus photographs is of particular significance in diseases such as glaucoma where structural changes in the optic nerve head and retinal nerve fiber layers are indicative of the progression of the disease.4,5 We have examined the fundus photographs of a group of normal and glaucoma patients where structural changes in nerve fiber layers in specific zones of the fundus were highlighted when a combination of restoration and enhancement procedures were employed.6
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