This paper describes a method for the determination of the colour of inhomogeneous stains on textile using flatbed scanning (FBS) and image analysis (IA). The method can be used to assess the cleaning performance of laundry detergent products. Stains on textile were visualised using a standard flatbed scanner. A fully automatic procedure was developed using image analysis (IA) software. Different colorimetric calibration procedures were investigated. The method was tested on 24 different types of stain on cotton cloths and compared to the analysis using a spectrophotometer. FBS-IA can be used to analyse colour changes on stained textile. The method is sufficiently accurate and precise to screen different laundry detergent products. FBS-IA is fast, easy to use and cheap. Images can further be used to analyse the spatial distribution of inhomogeneous stains. The best agreement between FBS-IA and spectrophotometer was obtained using a 3 by 9 transformation matrix without linearization of the RGB response.
Gerard van Dalen, Aat Don, Jegor Veldt, Erik Krijnen, Michiel Gribnau, "Colour analysis of inhomogeneous stains on textile using flatbed scanning and image analysis" in Proc. IS&T CGIV 2008/MCS'08 4th European Conf. on Colour in Graphics, Imaging, and Vision 10th Int'l Symp. on Multispectral Colour Science, 2008, pp 53 - 57, https://doi.org/10.2352/CGIV.2008.4.1.art00012