Color change evaluation method for textile products, etc.

摘要

PROBLEM TO BE SOLVED: To determine a grade based on an image taken by a general-purpose device such as a scanner or a camera, to have no blurring as compared with conventional visual determination, and to reflect the color and composition of textile products in a wide range. Provides a change assessment method. SOLUTION: The image input means, the image processing means, and the characteristic value calculation means are provided, and in the first step, the characteristic value of the image for each color tag from the 5th grade to the 1st grade of the gray scale is obtained. In the second step, the index of the color change between the color sheets of each class is determined from the relationship between the characteristic value of the image for the color sheet of the fifth grade and the characteristic value of the image for the color sheet of each other class. In the third step, for each textile product or the like before and after the color change, the characteristic value of the image for each textile product or the like is obtained. In the fourth step, the relationship between the characteristic values of the image for each textile product before and after the color change is compared with the index of the color change to determine the grade. [Selection diagram] Fig. 1