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colortransformation.cpp
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171 lines (140 loc) · 5.66 KB
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#include "colortransformation.h"
#include "QImageWriter"
ColorTransformation::ColorTransformation()
{
}
void ColorTransformation::RGBtoHSL(QImage image){
HSLImage = QImage(image.width(), image.height(), image.format());
red = QImage(image.width(), image.height(), image.format());
green = QImage(image.width(), image.height(), image.format());
blue = QImage(image.width(), image.height(), image.format());
for(int y = 0; y < image.height(); y++){
for (int x = 0; x < image.width(); x++){
QColor clrcurrent(image.pixel(x,y));
//Los valores RGB deben estar entre 0 y 255
//Los valores HSL deben estar entre 0 y 1
qreal var_R = (qreal) clrcurrent.red() / 255;
qreal var_G = (qreal) clrcurrent.green() / 255;
qreal var_B = (qreal) clrcurrent.blue() / 255;
//printf("var_R: %f - var_G %f - var_B %f \n", var_R, var_G, var_B);
qreal var_Min = std::min(std::min(var_R, var_G), var_B);
qreal var_Max = std::max(std::max(var_R, var_G), var_B);
qreal del_Max = var_Max - var_Min;
qreal H = 0;
qreal S = 0;
qreal L = (var_Max + var_Min) / 2;
if(del_Max == 0){
H = 0;
S = 0;
}
else{
if(L < 0.5){
S = del_Max / (var_Max + var_Min);
}
else{
S = del_Max / (2 - var_Max - var_Min);
}
qreal del_R = ((( var_Max - var_R ) / 6) + (del_Max / 2)) / del_Max;
qreal del_G = ((( var_Max - var_G ) / 6) + (del_Max / 2)) / del_Max;
qreal del_B = ((( var_Max - var_B ) / 6) + (del_Max / 2)) / del_Max;
if(var_R == var_Max){
H = del_B - del_G;
}
else if(var_G == var_Max){
H = (1 / 3.0f) + del_R - del_B;
}
else if(var_B == var_Max){
H = (2 / 3.0f) + del_G - del_R;
}
if(H < 0){
H += 1;
}
if(H > 1){
H -= 1;
}
}
//printf("var_H: %f - var_S %f - var_L %f \n", H, S, L);
QColor color;
color.setHslF(H,S,L);
HSLImage.setPixelColor(x,y,color);
int r = H * 225;
int g = S * 255;
int b = L * 255;
//printf("var r: %d - var g %d - var b %d \n", r, g, b);
red.setPixel(x, y, qRgb(r, 0, 0));
green.setPixel(x, y, qRgb(0, g, 0));
blue.setPixel(x, y, qRgb(0, 0, b));
}
}
//QImageWriter writerH("C:/Users/sony/Desktop/HSL-H.jpg");
//QImageWriter writerS("C:/Users/sony/Desktop/HSL-S.jpg");
//QImageWriter writerL("C:/Users/sony/Desktop/HSL-L.jpg");
//writerH.write(red);
//writerS.write(green);
//writerL.write(blue);
}
void ColorTransformation::RGBtoHSV(QImage image){
HSVImage = QImage(image.width(), image.height(), image.format());
red = QImage(image.width(), image.height(), image.format());
green = QImage(image.width(), image.height(), image.format());
blue = QImage(image.width(), image.height(), image.format());
for(int y = 0; y < image.height(); y++){
for (int x = 0; x < image.width(); x++){
QColor clrcurrent(image.pixel(x,y));
//Los valores RGB deben estar entre 0 y 255
//Los valores HSL deben estar entre 0 y 1
qreal var_R = (qreal) clrcurrent.red() / 255;
qreal var_G = (qreal) clrcurrent.green() / 255;
qreal var_B = (qreal) clrcurrent.blue() / 255;
//printf("var_R: %f - var_G %f - var_B %f \n", var_R, var_G, var_B);
qreal var_Min = std::min(std::min(var_R, var_G), var_B);
qreal var_Max = std::max(std::max(var_R, var_G), var_B);
qreal del_Max = var_Max - var_Min;
qreal H = 0;
qreal S = 0;
qreal V = var_Max;
if(del_Max == 0){
H = 0;
S = 0;
}
else{
S = del_Max / var_Max;
qreal del_R = ((( var_Max - var_R ) / 6) + (del_Max / 2)) / del_Max;
qreal del_G = ((( var_Max - var_G ) / 6) + (del_Max / 2)) / del_Max;
qreal del_B = ((( var_Max - var_B ) / 6) + (del_Max / 2)) / del_Max;
if(var_R == var_Max){
H = del_B - del_G;
}
else if(var_G == var_Max){
H = (1/3.0f) + del_R - del_B;
}
else if(var_B == var_Max){
H = (2/3.0f) + del_G - del_R;
}
if (H < 0) {
H += 1;
}
if(H > 1){
H -= 1;
}
}
//printf("var_H: %f - var_S %f - var_V %f \n", H, S, V);
QColor color;
color.setHsvF(H,S,V);
HSVImage.setPixelColor(x,y,color);
int r = H * 225;
int g = S * 255;
int b = V * 255;
//printf("var r: %d - var g %d - var b %d \n", r, g, b);
red.setPixel(x, y, qRgb(r, 0, 0));
green.setPixel(x, y, qRgb(0, g, 0));
blue.setPixel(x, y, qRgb(0, 0, b));
}
}
//QImageWriter writerH("C:/Users/sony/Desktop/HSV-H.jpg");
//QImageWriter writerS("C:/Users/sony/Desktop/HSV-S.jpg");
//QImageWriter writerV("C:/Users/sony/Desktop/HSV-V.jpg");
//writerH.write(red);
//writerS.write(green);
//writerV.write(blue);
}