src/core/transformations/conversion_grayscale.cpp

@@ -1,4 +1,6 @@
 #include "conversion_grayscale.h"
+#include<QDebug>
+
 
 ConversionGrayscale::ConversionGrayscale(PNM* img) :
     Transformation(img)
@@ -12,19 +14,53 @@ ConversionGrayscale::ConversionGrayscale(PNM* img, ImageViewer* iv) :
 
 PNM* ConversionGrayscale::transform()
 {
-    qDebug() << Q_FUNC_INFO << "Not implemented yet!";
-
     int width = image->width();
     int height = image->height();
 
     PNM* newImage = new PNM(width, height, QImage::Format_Grayscale8);
 
+
+
     if (image->format() == QImage::Format_Mono)
     {
+        for (int x=0; x<width; x++)
+                 for (int y=0; y<height; y++)
+                 {
+                     QRgb pixel = image->pixel(x,y);
+                     int v = qGray(pixel);
+
+                     if(v>128)
+                     {
+                         v=PIXEL_VAL_MAX;
+                     }
+                     else
+                     {
+                        v=PIXEL_VAL_MIN;
+                     }
+
+                     newImage->setPixel(x,y, QColor(v,v,v).rgb());
+
+                 }
 
     }
     else // if (image->format() == QImage::Format_RGB32)
     {
+    for (int x=0; x<width; x++)
+        for (int y=0; y<height; y++)
+        {
+            QRgb pixel = image->pixel(x,y);
+
+            double r = (double) qRed(pixel);
+            double g =(double) qGreen(pixel);
+            double b =(double) qBlue(pixel);
+
+            double p=((r*0.3)+(g*0.6)+(b*0.1));
+
+
+            newImage->setPixel(x,y, QColor(p,p,p).rgb());
+
+
+        }
 
     }
 

src/core/transformations/correction.cpp

@@ -21,7 +21,60 @@ PNM* Correction::transform()
 
     PNM* newImage = new PNM(width, height, image->format());
 
-    qDebug() << Q_FUNC_INFO << "Not implemented yet!";
+    for(int i=0; i<PIXEL_VAL_MAX+1; i++) LUT[i]=-1;
+
+    if (image->format() == QImage::Format_Mono)
+        {
+            for (int x=0; x<width; x++)
+                     for (int y=0; y<height; y++)
+                     {
+                         QRgb pixel = image->pixel(x,y);
+                         int v = qGray(pixel);
+
+                         if(LUT[v]==-1)
+                         {
+                            temp=pow(((v+shift)*factor),gamma);
+
+                            if(temp>255) temp=255;
+                            if(temp<0) temp=0;
+
+                            LUT[v]=(int)temp;
+                         }
+
+                         newImage->setPixel(x,y, QColor(LUT[v],LUT[v],LUT[v]).rgb());
+
+                     }
+
+        }
+        else // if (image->format() == QImage::Format_RGB32)
+        {
+
+        for (int x=0; x<width; x++)
+            for (int y=0; y<height; y++)
+            {
+                QRgb pixel = image->pixel(x,y);
+
+                rgb[0] = qRed(pixel);
+                rgb[1] = qGreen(pixel);
+                rgb[2] = qBlue(pixel);
+
+                    for(int i=0;i<3;i++)
+                    {
+                        if(LUT[rgb[i]]==-1)
+                        {
+                            temp=pow(((rgb[i]+shift)*factor),gamma);
+
+                            if(temp>255) temp=255;
+                            if(temp<0) temp=0;
+
+                            LUT[rgb[i]]=(int)temp;
+                    }
+                }
+
+               newImage->setPixel(x,y, QColor(LUT[rgb[0]],LUT[rgb[1]],LUT[rgb[2]]).rgb());
+            }
+
+        }
 
     return newImage;
 }

src/core/transformations/correction.h

@@ -13,6 +13,8 @@ public:
 
 private:
     int LUT[PIXEL_VAL_MAX+1];
+    int rgb[3];
+    float temp;
 };
 
 #endif // CORRECTION_H