将颜色反射率数据转换为L A B C和H值

本文关键字：反射率 颜色 数据 转换 | 更新日期: 2023-09-27 18:11:23

我需要一些帮助。我有一些颜色的反射率值，需要将这些值转换为L* a* b* C* h值。

我找到了一些visual basic源，声称可以做到这一点，但我不知道如何将其转换为C sharp。

有人能帮忙吗?

http://www.vbforums.com/showthread.php?p=821074

示例数据反射率值:0.35380、0.44130、0.50230、0.51650、0.52210、0.52780、0.53110、0.53350、0.53630、0.53900、0.54130、0.54330、0.54500、0.54630、0.54690、0.54680、0.54640、0.54710、0.54940、0.55240、0.55330、0.55250、0.55200、0.55190、0.55220、0.55310、0.55260、0.55340、0.55500、0.55540、0.55400

将颜色反射率数据转换为L A B C和H值

我已经回答了我自己的问题!

double[] d65Vals_X = new double[31] { 0.137, 0.676, 1.603, 2.451, 3.418, 3.699, 3.064, 1.933, 0.802, 0.156, 0.039, 0.347, 1.070, 2.170, 3.397, 4.732, 6.070, 7.311, 8.291, 8.634, 8.672, 7.930, 6.446, 4.669, 3.095, 1.859, 1.056, 0.570, 0.274, .0121, 0.058 };
        double[] d65Vals_Y = new double[31] { 0.014, 0.069, 0.168, 0.300, 0.554, 0.890, 1.290, 1.838, 2.520, 3.226, 4.320, 5.621, 6.907, 8.059, 8.668, 8.855, 8.581, 7.951, 7.106, 6.004, 5.079, 4.065, 2.999, 2.042, 1.290, 0.746, 0.417, 0.223, 0.107, 0.047, 0.023 };
        double[] d65Vals_Z = new double[31] { 0.612, 3.110, 7.627, 12.095, 17.537, 19.888, 17.695, 13.000, 7.699, 3.938, 2.046, 1.049, 0.544, 0.278, 0.122, 0.035, 0.001, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000, 0.000 };
        private double FXYZ(double[] REF, int A){
            double XYZref = 0;
            double illXYZ = 0;
            int i;
            for (i = 0; i < 31; i++)
            {
                if (A == 0){
                    XYZref = XYZref + (REF[i] * d65Vals_X[i]);
                    illXYZ = illXYZ + d65Vals_X[i];
                } else if (A == 1){
                    XYZref = XYZref + (REF[i] * d65Vals_Y[i]);
                    illXYZ = illXYZ + d65Vals_Y[i];
                } else {
                    XYZref = XYZref + (REF[i] * d65Vals_Z[i]);
                    illXYZ = illXYZ + d65Vals_Z[i];
                }                
            }
            return (XYZref / (100 * illXYZ));
        }
        private void btnCalculate_Click(object sender, EventArgs e)
        {
            int i;
            double L, A, B;
            double[] reflexVals = new double[31];
            Console.Write("Reflex Data: ");
            for (i = 0; i < 31; i++)
            {
                TextBox reflex = this.Controls["txtReflex_" + (i + 1)] as TextBox;                
                reflexVals[i] = double.Parse(reflex.Text);
                Console.Write(reflexVals[i].ToString() + ", ");
            }
            Console.Write("'n");
            double[] FFXYZ = new double[3];
            double[] XYZ = new double[3];
            double CR = (1 / 3);
            CR = 0.33333333333333333333333333333333;
            for (i = 0; i < 3; i++)
            {
                XYZ[i] = FXYZ(reflexVals, i);
                Console.WriteLine("XYZ[" + i + "] = " + XYZ[i]);
                if (XYZ[i] > 0.008856)
                {
                    FFXYZ[i] = Math.Pow(XYZ[i], CR);
                    Console.WriteLine("FFXYZ[" + i + "] = " + Math.Pow(XYZ[i], CR));
                }
                else
                {
                    FFXYZ[i] = (7.787 * XYZ[i]) + (16 / 116);
                    Console.WriteLine("FFXYZ[" + i + "] = (7.787 * " + XYZ[i] + ") + (16 / 116)");
                }
            }
            if (XYZ[1] > 0.00856)
            {
                L = (116 * FFXYZ[1]) - 16;
                Console.WriteLine("L = (116 * " + FFXYZ[1] + ") - 16");
            }
            else
            {
                L = 903.3 * XYZ[1];
                Console.WriteLine("L = 903.3 * " + XYZ[1] + ")");
            }
            A = 500 * (FFXYZ[0] - FFXYZ[1]);
            B = 200 * (FFXYZ[1] - FFXYZ[2]);
            Console.WriteLine("A = 500 * (" + FFXYZ[0] + " - " + FFXYZ[1] + ")");
            Console.WriteLine("A = 200 * (" + FFXYZ[1] + " - " + FFXYZ[2] + ")");
            txtCalcL.Text = L.ToString();
            txtCalcA.Text = A.ToString();
            txtCalcB.Text = B.ToString();
        }
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