<title>Real-time defect detection on cloths</title>

Abstract

The detection and classification of defects is strongly useful for stopping in real time the cloth production when degenerative defects occur; for increasing the efficiency of production by limiting the decrement of price for cloth rolls. The paper describes the work performed for detecting defect of well-known manufacturers of cloths and machine builders for cloths (looms). The main goal has been to obtain a new and innovative production line endowed with a system for detecting defects in real-time. The system is based on image processing techniques with a special attention to the real-time constraints. An architecture separating an on-line defect detection and an off-line classification has been proposed. An intelligent optical head, assembled on the loom, has the duty to acquire images and to detect the defects in realtime. A server has the offline task to classify each defect detected by the head. In the paper, some new algorithms for defect detection have been proposed. These have been compared with a selection of the most interesting algorithms for the same purposed taken from the literature. The comparison has been conducted by on the basis of a large test set with several types of defects and by considering reliability, performance, and complexity.

Effect of shed geometry on starting mark of woven fabric

“…Later, some preventive works were planned. Baldassarre et al [16] worked on a loom equipped with an online monitoring device that may be stopped when degenerative defects are detected. Thus, by fabric inspection and defect recording, the occurrence of loom stoppage can be reduced.…”

<title>Quality control in cloth production: a new system for real-time defect detection</title>

“…Nowadays the importance of quality control in all these processes is growing up: in order to compete with low cost product (due to the use of low cost labour), the production of very high quality cloth is the main goal of cloth companies [1][2][3][4][5][6][7][8][9][10][11][12][13] . A quality control has thus to achieve these following steps: 1.…”