Abstract:

Considering the disadvantages of large calculation and bad adaption,periodic change of fabrics texture was used.Base on that, morphological filtering is carried out and   the threshold is confirmed by using pixel area,then the defects position is found.As a result,it will not affect the veracity and improve the computational speed.The experimental results show that the defect position is in accord with human subjective vision  decreasing the error rate by 4%.

Key words: construct the structuring element, morphological filter, adaptive threshold selection, defect detection