グレースケールの色濃度値による解析
1980 年 36 巻 6 号 p. T260-T265
詳細
1980 年 36 巻 6 号 p. T260-T265
Two kinds of gray scales, one for assessing staining and the other for assessing change in color, have been used currently for judgment of colorfastness of dyeing. These scales are defined by the Adams-Nickerson color difference formula.
In this paper these two gray scales were shown to be written with an equation by using the depth value difference, ΔC*, defined as
where, N is the fastness rating number (gray color specimen number) and n=10-2N.
The rating of colorfastness could be calculated by using the above mentioned equation. Thus colorfastness could be judged objectively in contrast to the conventional visual method by which the judgment tends to vary depending on individual evaluators.
