Measurement of abnormal degree of Y-shaped fiber cross-section

Due to the inefficiency and poor data stability of six-point method,and on account of the current measurement system which is difficult to perform boundary extraction of the image of fiber with unclosed boundary,the three-point method for measuring the abnormal degree of the cross-section of Y-shaped fiber was provided.The edge detection of fiber cross-section was realized by taking three internal turning points in the cross-sectional image of Y-shaped fiber.At the same time,the extraction of characteristic parameters and the computation of the abnormal degree of Y-shaped fiber were completed by determining the boundaries of fiber cross-section.This method is especially suitable for measuring the abnormal degree of the cross-sectional image of Y-shaped fiber with the unclosed boundry,with high efficiency.The measurement results indicated that the method described by this paper has good practical application.