Abstract
An eyeground image is the only one that can see directly the arteries and veins from the outside of the body.Therefor, the eyeground image are used medical check that would make the burden too heavy for doctor. For building the automatic diagnosis support system we need to extract the outline of the blood vessel and measure the caliber of the blood vessel. However the eyeground image difficult to extract the outline with the general way for almost tinged of red. So we suggest to apply fuzzy c-means method. At the result, we can extract the outline of the blood vessel. The caliber and curve of the blood vessel can be measured and this image processing makes possible diagnosis support by eyeground photograph.
