Abstract:

 With the application of CCD, the enlarged non-circular spinneret holes image was captured, followed by edge detection and preprocessing of thresholding and edge thinning. In the measurement of non-circular degree parameter,  the basic circular and linear elements were first detected, then  the method of least square was used to fit circular and linear for obtaining more accurate parameter. This method can achieve the judgment of  block and detection of shaped degree for non-circular spinneret hole. Experimental results show that this method has the high precision and speed detection. Meanwhile, it is suitable for non-circular spinneret holes detection in synthetic fiber industry.

Key words: irregularshaped, spinneret hole, image process, curve fitting, shaped degree parameter