Color Measurement of Printed Textile using CCD Cameras

Automated visual inspection of industrial textile printing has the potential to increase the overall print quality. In this article, we investigate whether all printed colors can be detected by CCD cameras and determine the color measurement precision.Occurring deviations in color values of homogenouesly colored textile patches are explained by the dichromatic reflection model. An extra clue is given for color inspection based on body and surface reflection invariance, inspection of the color component hue is useful as it is insensitive to texture and highlights. Experimental results show that a trade-off exists between selection of the color-matching matrix: A calibrated matrix allows color detection with higher accuracy then a default transformation matrix. However, the use of such calibrated matrix prevents detection of a broad spectrum of colors.