Fig. 1. Types of the yarn defects

Fig. 2. Examples of the yarn defects

Fig. 3. Flow chart of our algorithm for detecting yarn defects

Fig. 4. Processing results obtained with different parameters. (a) p=1, q=0; (b) p=1, q=1; (c) p=0, q=2

Fig. 5. Process of yarn image processing. (a) Original yarn; (b) processing result of clustering algorithm

Fig. 6. Processing result of the morphological open operation

Fig. 7. Flow chart of the yarn defects detection

Fig. 8. Yarn defects detected by our algorithm