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rawTherapee/rtengine/colortemp.h

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/*
* This file is part of RawTherapee.
*
* Copyright (c) 2004-2010 Gabor Horvath <hgabor@rawtherapee.com>
*
* RawTherapee is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* RawTherapee is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with RawTherapee. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _COLORTEMP_
#define _COLORTEMP_
#include <gtkmm.h>
#include <cmath>
#include "colortemp.h"
#include "imagefloat.h"
#include "labimage.h"
#define MAXR(a,b) ((a) > (b) ? (a) : (b))
namespace rtengine {
#define MINTEMP 2000
#define MAXTEMP 25000
#define MINGREEN 0.02
#define MAXGREEN 5.0
#define INITIALBLACKBODY 4000
class ColorTemp {
private:
double temp;
double green;
Glib::ustring method;
static void clip (double &temp, double &green);
public:
ColorTemp () : temp(-1), green(-1), method("Custom") {}
ColorTemp (double t, double g, Glib::ustring m);
ColorTemp (double mulr, double mulg, double mulb);
inline double getTemp () { return temp; }
inline double getGreen () { return green; }
void getMultipliers (double &mulr, double &mulg, double &mulb) { temp2mul (temp, green, mulr, mulg, mulb); }
void mul2temp (double rmul, double gmul, double bmul, double& temp, double& green);
void temp2mul (double temp, double green, double& rmul, double& gmul, double& bmul);
static void temp2mulxyz (double tem, double gree, Glib::ustring method, double &Xxyz, double &Zxyz);
int XYZtoCorColorTemp(double x0,double y0 ,double z0, double &temp);
static void cieCAT02(double Xw, double Yw, double Zw,double &CAM02BB00,double &CAM02BB01,double &CAM02BB02, double &CAM02BB10,double &CAM02BB11,double &CAM02BB12,double &CAM02BB20,double &CAM02BB21,double &CAM02BB22, double adap );
//static void CAT02 (Imagefloat* baseImg, const ProcParams* params);
//static void ciecam_02 (LabImage* lab, const ProcParams* params);
static double d_factor( double f, double la ) {
return f * (1.0 - ((1.0 / 3.6) * exp((-la - 42.0) / 92.0)));
}
static double calculate_fl_from_la_ciecam02( double la ) {
double la5 = la * 5.0;
double k = 1.0 / (la5 + 1.0);
/* Calculate k^4. */
k = k * k;
k = k * k;
return (0.2 * k * la5) + (0.1 * (1.0 - k) * (1.0 - k) * pow(la5, 1.0 / 3.0));
}
static double achromatic_response_to_white( double x, double y, double z, double d, double fl, double nbb, int gamu ) {
double r, g, b;
double rc, gc, bc;
double rp, gp, bp;
double rpa, gpa, bpa;
xyz_to_cat02( r, g, b, x, y, z, gamu );
rc = r * (((y * d) / r) + (1.0 - d));
gc = g * (((y * d) / g) + (1.0 - d));
bc = b * (((y * d) / b) + (1.0 - d));
cat02_to_hpe( rp, gp, bp, rc, gc, bc, gamu );
if(gamu==1){//gamut correction M.H.Brill S.Susstrunk
rp=MAXR(rp,0.0);
gp=MAXR(gp,0.0);
bp=MAXR(bp,0.0);
}
rpa = nonlinear_adaptation( rp, fl );
gpa = nonlinear_adaptation( gp, fl );
bpa = nonlinear_adaptation( bp, fl );
return ((2.0 * rpa) + gpa + ((1.0 / 20.0) * bpa) - 0.305) * nbb;
}
static void xyz_to_cat02 ( double &r, double &g, double &b, double x, double y, double z, int gamu );
static void cat02_to_hpe ( double &rh, double &gh, double &bh, double r, double g, double b, int gamu );
static void cat02_to_xyz ( double &x, double &y, double &z, double r, double g, double b, int gamu );
static void hpe_to_xyz ( double &x, double &y, double &z, double r, double g, double b );
static double nonlinear_adaptation( double c, double fl ) {
double p;
if(c<0.0){ p = pow( (-1.0*fl * c) / 100.0, 0.42 );return ((-1.0*400.0 * p) / (27.13 + p)) + 0.1;}
else {p = pow( (fl * c) / 100.0, 0.42 ); return ((400.0 * p) / (27.13 + p)) + 0.1;}
}
static double inverse_nonlinear_adaptation( double c, double fl ) {
int c1;
if(c-0.1 < 0.0) c1=-1; else c1=1;
return c1*(100.0 / fl) * pow( (27.13 * fabs( c - 0.1 )) / (400.0 - fabs( c - 0.1 )), 1.0 / 0.42 );
}
static void curvecolor(double satind, double satval, double &sres, double parsat);
static void curveJ (double br, double contr, int db, LUTf & outCurve , LUTu & histogram ) ;
bool operator== (const ColorTemp& other) { return fabs(temp-other.temp)<1e-10 && fabs(green-other.green)<1e-10; }
bool operator!= (const ColorTemp& other) { return !(*this==other); }
static double blackbody_spect (double wavelength, double m1, double m2, double temp);
static double daylight_spect (double wavelength, double m1, double m2, double temp);
static const double Cloudy6200_spect[97];
static const double Daylight5300_spect[97];
static const double Shade7600_spect[97];
static const double A2856_spect[97];
static const double FluoF1_spect[97];
static const double FluoF2_spect[97];
static const double FluoF3_spect[97];
static const double FluoF4_spect[97];
static const double FluoF5_spect[97];
static const double FluoF6_spect[97];
static const double FluoF7_spect[97];
static const double FluoF8_spect[97];
static const double FluoF9_spect[97];
static const double FluoF10_spect[97];
static const double FluoF11_spect[97];
static const double FluoF12_spect[97];
static const double HMI_spect[97];
static const double GTI_spect[97];
static const double JudgeIII_spect[97];
static const double Solux3500_spect[97];
static const double Solux4100_spect[97];
static const double Solux4700_spect[97];
static const double NG_Solux4700_spect[97];
static const double NG_LEDLSI2040_spect[97];
static const double NG_CRSSP12WWMR16_spect[97];
static const double Flash5500_spect[97];
static const double Flash6000_spect[97];
static const double Flash6500_spect[97];
//spectral data 8 color Colorchecker24
static double get_spectral_color (double wavelength, const double* array) {
int wlm = (int) ((wavelength -350.)/5.);
return (array[wlm]);
}
static const double ColorchechredC3_spect[97];
static const double ColorchechOraA2_spect[97];
static const double ColorchechYelD3_spect[97];
static const double ColorchechGreE2_spect[97];
static const double ColorchechGreB3_spect[97];
static const double ColorchechCyaF3_spect[97];
static const double ColorchechPurD2_spect[97];
static const double ColorchechMagE3_spect[97];
static const double ColorchechSkiA138_13_14_spect[97];
static const double ColorchechGraC4_67_spect[97];
static const double ColorchechSkiB166_18_18_spect[97];
static const double ColorchechBluC150_m5_m22_spect[97];
static const double ColorchechDCBluN881_m7_m14_spect[97];//ColorChecker DC N8
static const double ColorchechSGSkiF763_14_26_spect[97];//ColorChecker SG F7
static const double ColorchechSGSkiK285_11_17_spect[97];//ColorChecker SG K2
static const double ColorchechWhiA496_spect[97];
static const double ColorchechGreD1_spect[97];
static const double ColorchechSGBlaN3_6_spect[97];//ColorChecker SG N3
static const double JDC468_GraK14_44_spect[97];//468 K14
static const double JDC468_BluH10_spect[97];//468 H10
static const double ColabSkin35_15_17_spect[97];//Skin L 35
static const double ColabSkin57_22_18_spect[97];//Skin L 57
static const double ColabSkin40_17_17_spect[97];//Skin L 40
static const double ColabSkin91_4_14_spect[97];//Skin L 91
static const double ColabSkin87_8_8_spect[97];//Skin L 87
static const double ColabSkin89_8_21_spect[97];//Skin L 89
static const double ColabSkin75_8_4_spect[97];//Skin L 75
static const double ColabSkin75_10_33_spect[97];//Skin L 75
static const double ColabSkin65_33_11_spect[97];//Skin L 65
static const double ColabSkin65_7_24_spect[97];//Skin L 65
static const double ColabSkin57_19_6_spect[97];//Skin L 57
static const double ColabSkin57_4_19_spect[97];//Skin L 57
static const double ColabSkin57_10_28_spect[97];//Skin L 57
static const double ColabSkin40_7_19_spect[97];//Skin L 57
static const double ColabSkin40_17_6_spect[97];//Skin L 40
static const double ColabSkin40_4_11_spect[97];//Skin L 40
static const double ColabSkin33_6_15_spect[97];//Skin L 33
static const double ColabSkin33_15_5_spect[97];//Skin L 33
static const double ColabSkin33_10_15_spect[97];//Skin L 33
static const double ColabSkin24_5_6_spect[97];//Skin L 24
static const double ColabSkin26_18_18_spect[97];//Skin L 26
static const double ColabSkin24_7_5_spect[97];//Skin L 24
static const double ColabSkin20_4_2_spect[97];//Skin L 20
static const double ColabSkin98_m2_10_spect[97];//Skin L 98
static const double ColabSkin90_m1_20_spect[97];//Skin L 90
static const double ColabSkin95_0_4_spect[97];//Skin L 95
static const double ColabSkin81_2_14_spect[97];//Skin L 81
static const double ColabSkin87_3_10_spect[97];//Skin L 87
static const double ColabSkin77_12_21_spect[97];//Skin L 77
static const double ColabSkin70_7_32_spect[97];//Skin L 77
static const double ColabSky60_0_m31_spect[97];//Sky L=60
static const double ColabSky42_0_m24_spect[97];//Sky L=42
static void spectrum_to_xyz_daylight (double _m1, double _m2, double _temp, double &x, double &y, double &z);
static void spectrum_to_xyz_blackbody (double _m1, double _m2, double _temp, double &x, double &y, double &z);
static void spectrum_to_xyz_preset (const double* spec_intens, double &x, double &y, double &z);
static void spectrum_to_color_xyz_daylight (const double* spec_color, double _m1, double _m2, double _temp, double &xx, double &yy, double &zz);
static void spectrum_to_color_xyz_blackbody (const double* spec_color, double _m1, double _m2, double _temp, double &xx, double &yy, double &zz);
static void spectrum_to_color_xyz_preset (const double* spec_color, const double* spec_intens, double &xx, double &yy, double &zz);
/**
* Inverse transform from CIECAM02 JCh to XYZ.
*/
static void jch2xyz_ciecam02( double &x, double &y, double &z,
double J, double C, double h,
double xw, double yw, double zw,
double yb, double la,
double f, double c, double nc, bool doneinit2, int gamu );
/**
* Forward transform from XYZ to CIECAM02 JCh.
*/
static void xyz2jchqms_ciecam02( double &J, double &C, double &h,
double &Q, double &M, double &s,double &aw, double &fl, double &wh,
double x, double y, double z,
double xw, double yw, double zw,
double yb, double la,
double f, double c, double nc, double pilotd, bool doneinit1, int gamu );
};
inline void ColorTemp::xyz_to_cat02( double &r, double &g, double &b, double x, double y, double z, int gamu )
{
if(gamu==0){
r = ( 0.7328 * x) + (0.4296 * y) - (0.1624 * z);
g = (-0.7036 * x) + (1.6975 * y) + (0.0061 * z);
b = ( 0.0030 * x) + (0.0136 * y) + (0.9834 * z);
}
else if (gamu==1) {//gamut correction M.H.Brill S.Susstrunk
//r = ( 0.7328 * x) + (0.4296 * y) - (0.1624 * z);
//g = (-0.7036 * x) + (1.6975 * y) + (0.0061 * z);
//b = ( 0.0000 * x) + (0.0000 * y) + (1.0000 * z);
r = ( 1.007245 * x) + (0.011136* y) - (0.018381 * z);//Changjun Li
g = (-0.318061 * x) + (1.314589 * y) + (0.003471 * z);
b = ( 0.0000 * x) + (0.0000 * y) + (1.0000 * z);
}
}
inline void ColorTemp::cat02_to_xyz( double &x, double &y, double &z, double r, double g, double b, int gamu )
{
if(gamu==0) {
x = ( 1.096124 * r) - (0.278869 * g) + (0.182745 * b);
y = ( 0.454369 * r) + (0.473533 * g) + (0.072098 * b);
z = (-0.009628 * r) - (0.005698 * g) + (1.015326 * b);
}
else if(gamu==1) {//gamut correction M.H.Brill S.Susstrunk
//x = ( 1.0978566 * r) - (0.277843 * g) + (0.179987 * b);
//y = ( 0.455053 * r) + (0.473938 * g) + (0.0710096* b);
//z = ( 0.000000 * r) - (0.000000 * g) + (1.000000 * b);
x = ( 0.99015849 * r) - (0.00838772* g) + (0.018229217 * b);//Changjun Li
y = ( 0.239565979 * r) + (0.758664642 * g) + (0.001770137* b);
z = ( 0.000000 * r) - (0.000000 * g) + (1.000000 * b);
}
}
inline void ColorTemp::hpe_to_xyz( double &x, double &y, double &z, double r, double g, double b )
{
x = (1.910197 * r) - (1.112124 * g) + (0.201908 * b);
y = (0.370950 * r) + (0.629054 * g) - (0.000008 * b);
z = b;
}
inline void ColorTemp::cat02_to_hpe( double &rh, double &gh, double &bh, double r, double g, double b, int gamu )
{ if(gamu==0){
rh = ( 0.7409792 * r) + (0.2180250 * g) + (0.0410058 * b);
gh = ( 0.2853532 * r) + (0.6242014 * g) + (0.0904454 * b);
bh = (-0.0096280 * r) - (0.0056980 * g) + (1.0153260 * b);
}
else if (gamu==1) {//Changjun Li
rh = ( 0.550930835 * r) + (0.519435987* g) - ( 0.070356303* b);
gh = ( 0.055954056 * r) + (0.89973132 * g) + (0.044315524 * b);
bh = (0.0 * r) - (0.0* g) + (1.0 * b);
}
}
}
#endif
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