/**
Performs a tone mapping on a 48-bit RGB or a 96-bit RGBF image and returns a 24-bit image.
The meaning of the parameters depends on the choosen algorithm.
When both parameters are set to zero, a default set of parameters is used.
@param dib Input RGB/RGBF image
@param tmo Tone mapping operator
@param first_param First parameter of the algorithm
@param second_param Second parameter of the algorithm
return Returns a 24-bit tone mapped image if successful, returns NULL otherwise
*/
FIBITMAP * DLL_CALLCONV
FreeImage_ToneMapping(FIBITMAP *dib, FREE_IMAGE_TMO tmo, double first_param, double second_param) {
if(dib) {
switch(tmo) {
// Adaptive logarithmic mapping (F. Drago, 2003)
case FITMO_DRAGO03:
if((first_param == 0) && (second_param == 0)) {
// use default values (gamma = 2.2, exposure = 0)
return FreeImage_TmoDrago03(dib, 2.2, 0);
} else {
// use user's value
return FreeImage_TmoDrago03(dib, first_param, second_param);
}
break;
// Dynamic range reduction inspired by photoreceptor phhysiology (E. Reinhard, 2005)
case FITMO_REINHARD05:
if((first_param == 0) && (second_param == 0)) {
// use default values by setting intensity to 0 and contrast to 0
return FreeImage_TmoReinhard05(dib, 0, 0);
} else {
// use user's value
return FreeImage_TmoReinhard05(dib, first_param, second_param);
}
break;
}
}
return NULL;
}
/**
Performs a tone mapping on a 48-bit RGB or a 96-bit RGBF image and returns a 24-bit image.
The meaning of the parameters depends on the choosen algorithm.
When both parameters are set to zero, a default set of parameters is used.
@param dib Input RGB/RGBF image
@param tmo Tone mapping operator
@param first_param First parameter of the algorithm
@param second_param Second parameter of the algorithm
return Returns a 24-bit tone mapped image if successful, returns NULL otherwise
*/
FIBITMAP * DLL_CALLCONV
FreeImage_ToneMapping(FIBITMAP *dib, FREE_IMAGE_TMO tmo, double first_param, double second_param) {
if(FreeImage_HasPixels(dib)) {
switch(tmo) {
// Adaptive logarithmic mapping (F. Drago, 2003)
case FITMO_DRAGO03:
if((first_param == 0) && (second_param == 0)) {
// use default values (gamma = 2.2, exposure = 0)
return FreeImage_TmoDrago03(dib, 2.2, 0);
} else {
// use user's value
return FreeImage_TmoDrago03(dib, first_param, second_param);
}
break;
// Dynamic range reduction inspired by photoreceptor phhysiology (E. Reinhard, 2005)
case FITMO_REINHARD05:
if((first_param == 0) && (second_param == 0)) {
// use default values by setting intensity to 0 and contrast to 0
return FreeImage_TmoReinhard05(dib, 0, 0);
} else {
// use user's value
return FreeImage_TmoReinhard05(dib, first_param, second_param);
}
break;
// Gradient Domain HDR Compression (R. Fattal, 2002)
case FITMO_FATTAL02:
if((first_param == 0) && (second_param == 0)) {
// use default values by setting color saturation to 0.5 and attenuation to 0.85
return FreeImage_TmoFattal02(dib, 0.5, 0.85);
} else {
// use user's value
return FreeImage_TmoFattal02(dib, first_param, second_param);
}
break;
}
}
return NULL;
}
