Evaluation of stain release rating based on image analysis

In order to evaluate the stain release rating after washing objectively,a method based on image analysis is proposed,and the feasibility of the computer vision evaluation of stain release of the fabric after machine washing is discussed.Firstly,the images of the different stain release ratings of AATCC 130—2000 standard replicas are captured using a scanner and the regression analysis of the relationship between stain intensity of the stain region and its rating is carried out.Secondly,the intensity-rating equation is fit by using least square method to calculate the stain release rating of all the test samples after washing with different times.The research results showed,in the 5 rating evaluation system of AATCC 130—2000 standard,not all the intensity distribution corresponding to the rating point is conformable,it needs to add ratings 0.5,1.5 and 3.5,so the modified 8 rating evaluation is more reasonable.Compared with the manual evaluation,the evaluation of stain release rating based on image analysis is much more accurate and objective.