git.maemo.org Git - photoenhancer/blob - src/filters/autocolor/autocolorfilter.cpp

   1 #include "autocolorfilter.h"
   2 #include <QImage>
   3 #include <QColor>
   4 #include <QDebug>
   5 AutoColorFilter::AutoColorFilter()
   6 {
   7 }
   8 void AutoColorFilter::applyFilter(QImage &image)
   9 {
  10         int outputRed,outputGreen,outputBlue,cg,dr,dg,db,inputRed,inputBlue,inputGreen;
  11     for(int i=0;i<image.width();i++)
  12         for(int j=0;j<image.height();j++)
  13         {
  14             QColor inPixel(image.pixel(i,j));
  15             inputRed=inPixel.red();
  16             inputBlue=inPixel.blue();
  17             inputGreen=inPixel.green();
  18
  19             cg=(inputBlue+inputGreen+inputRed)/3;
  20             dr=inputRed-cg;
  21             dg=inputGreen-cg;
  22             db=inputBlue-cg;
  23
  24             outputBlue=inputBlue-dr;
  25             outputGreen=inputGreen-dg;
  26             outputRed=inputRed-dr;
  27
  28             if(outputBlue<0) outputBlue=0;
  29             if(outputGreen<0) outputGreen=0;
  30             if(outputRed<0) outputRed=0;
  31
  32             if(outputBlue>255) outputBlue=255;
  33             if(outputGreen>255) outputGreen=255;
  34             if(outputRed>255) outputRed=255;
  35
  36
  37             QColor outPixel(outputRed,outputGreen,outputBlue);
  38             image.setPixel(i,j,outPixel.rgb());
  39     }
  40
  41 }