Abstract: The number of fibers in sample must be obtained to determine diameter of fiber and blending rate of sample. In order to do this automatically a fiber scatter should first be introduced to make fibers interlaced together as less as three. Then image process is employed to distinguish individual fiber. The paper introduced this image process method. First, the edge of interlacing fibers is extracted. Second, the slope angle of tangent at the individual point of edge is calculated to form a curve of slope angle. This curve is wavelet transformed and the dots at the end of fiber are removed because sharp change occurs in the curve. The fiber edge can be restored from the remained dots by Hough transform. These edges are sort out to figure out the amount of interlacing fiber and also diameter of fibers. Experiment shows the accurate is high enough for standards involved.

Key words: Wavelet, diameter, amount of fibers, segmentation of interlacing fibers