Abstract:

The occluded spinneret hole and the diameter of spinneret were detected by means of computer image processing. Meanwhile, an algorithm was introduced to detect the spinneret hole image which was collected by a CCD camera, including image collection, square Gray-scale transformation, edge detection based on Sobel algorithm, binarization based on distance -preserving method, an edge thinning algorithm with Sobel operator. On the basis of geometrical characteristics of the circle, we judged  if spinneret holes had been occluded, and determined clogging area proportion via  the pixel of the spinneret hole image and solved the diameter of the hole that had not been occluded. The application  indicates that this algorithm is reasonable, efficient and accurate.

Key words: image processing, spinneret hole, edge detection, algorithms, hole identification, area proportion