Fault Detection in Textile Web Materials using Machine Vision Technique

ct such as color or width inconsistencies, slubs, broken ends, etc. The tests on the quality of yarns are usually performed at the output of spinning-mills. Quality test runs for looms and knitting machines require interruption of the weaving process. This interruption is not practically feasible for the machines that are intended for large production runs of fabric rolls. The quality test is carried out in weaving machines using existing methods which generally produces unacceptable results. These test runs tend to be smaller and may not register recurring fabric defects that are generated due to sinusoidally occurring inconstancies in the weaving machines. The weaving irregularities generated in the weaving machines due to the change in operating conditions (temperature, humidity, etc.) also results in various fabric defects independ quality. 3. Fabric Defect Inspection Methods 3.1 Traditional Inspection The traditional inspection of the fabric fault is carried out by Human inspections [5]. The fabric produced from the weaving machines is about 1.5-2 meters wide, and rolls out at the speed of 0.3-0.5 meters per minute. When a human inspector notices a defect on the moving fabric, he stops the motor that rotates the fabric roll, records the defect with its location and starts the motor again. 3.2 Automation for Inspection The automated fabric inspection system is economically attractive when reduction in personnel cost and associated benefits are considered. The architecture of a typical