DEGREE-OF-STAIN JUDGING DEVICE AND DEGREE-OF-STAIN JUDGING METHOD

摘要

A contamination degree determining apparatus for paper determines a final contamination degree of paper on the basis of values of various contamination characteristics indicating the degrees of, for example, creases, wrinkles or stains obtained from the paper. Values of a plurality of contamination characteristics are input to the contamination degree determining apparatus for paper. The apparatus calculates a plurality of evaluation values from the plurality of input contamination characteristics, the contribution degree of each of the plurality of contamination characteristics, reference vectors reflecting the distribution of the plurality of contamination characteristics, and dispersion parameters reflecting the distribution of the plurality of contamination characteristics. The apparatus determines the final contamination degree of the paper on the basis of the calculated evaluation values and the weight of each of the evaluation values.