Measurement of the diameter and curvature of fibers plays a very important role in wool and textile industry. In this paper

an automatic measurement method based on image analysis is presented. In this method

the image processing and analysis is fully used. Firstly

this method enhances the captured images. Secondly

it uses canny operator to detect the edges of the fibers. And then

it acguires the binary images by using clustering. It does post processing operation to the binary images and extracts the skeletons of the fibers. Finally

it computes the value of diameter by Euclid distance transformation

and calculates the value of curvature. As experiments demonstrate

this method is not only more quickly than the method based on line fitting

but also generates more accurate results than the method based on line fitting because we have avoided many steps which may introduce errors.