Question

我使用此网站作为参考：http://www.rapidtables.com/convert/color/rgb-to-cmyk.htm

我的代码：

public void Convert2CMYK()
{
    float c, m, y, k;
    if (inRed == 0 && inGreen == 0 && inBlue == 0)
    {
        tbCyan.Text = "0";
        tbMagenta.Text = "0";
        tbYellow.Text = "0";
        tbBlack.Text = "1";
    }

    c = 1 - (inRed / 255f);
    m = 1 - (inGreen / 255f);
    y = 1 - (inBlue / 255f);

    var minCMY = Math.Min(c, Math.Min(m, y));

    c = (c - minCMY) / (1 - minCMY) * 100;
    m = (m - minCMY) / (1 - minCMY) * 100;
    y = (y - minCMY) / (1 - minCMY) * 100;
    k = minCMY * 100;

    tbCyan.Text = c.ToString();
    tbMagenta.Text = m.ToString();
    tbYellow.Text = y.ToString();
    tbBlack.Text = k.ToString();
}

在现场，R = 25，G = 25，B = 25导致C = 0，M = 0，Y = 0，K = 0.902

在app（我的代码）中，R = 25，G = 25，B = 25导致C = 0，M = 0，Y = 0，K = 90.19608

我需要修改哪些内容才能确保结果准确无误。

Answer 1

感谢大家的帮助。以下是完成这一操作的最终方程式：

c = Math.Round((c - minCMY) / (1 - minCMY), 3);
m = Math.Round((m - minCMY) / (1 - minCMY), 3);
y = Math.Round((y - minCMY) / (1 - minCMY), 3);
k = Math.Round(minCMY, 3);

为什么将RGB转换为CMYK未显示正确的结果

1 个答案: