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Retinal blood vessel images are enhanced by removing the non-stationary background, which is adaptively estimated based on local neighbourhood information. The result is a much better segmentation of the blood vessels with a simple algorithm and without the need to obtain a priori illumination knowledge of the imaging system.
Inspec keywords: image enhancement; eye; blood vessels; image segmentation
Other keywords:
Subjects: Computer vision and image processing techniques; Optical, image and video signal processing