diff --git a/src/core/transformations/blur_gaussian.cpp b/src/core/transformations/blur_gaussian.cpp
index 3eba6e4..af4903e 100644
--- a/src/core/transformations/blur_gaussian.cpp
+++ b/src/core/transformations/blur_gaussian.cpp
@@ -18,22 +18,32 @@ PNM* BlurGaussian::transform()
     radius = (size/2)+1;
     sigma = getParameter("sigma").toDouble();
 
-    return convolute(getMask(size, Normalize), RepeatEdge);
+    return convolute(getMask(size, Normalize), CyclicEdge);
 }
 
 math::matrix<float> BlurGaussian::getMask(int size, Mode)
 {
     math::matrix<float> mask(size, size);
 
-    qDebug() << Q_FUNC_INFO << "Not implemented yet!";
+    if(size%2!=0) radius=size/2;
+
+
+    for(int i=-radius;i<=radius;i++)
+    {
+        for(int j=-radius;j<=radius;j++)
+        {
+
+            mask[i+radius][j+radius]=getGauss(i,j,sigma);
+        }
+    }
 
     return mask;
 }
 
 float BlurGaussian::getGauss(int x, int y, float sigma)
 {    
-    qDebug() << Q_FUNC_INFO << "Not implemented yet!";
 
-    return 0;
+    float gauss= exp(-(x*x+y*y)/(2*sigma*sigma))/(2*M_PI*sigma*sigma);
+    return gauss;
 }
 
diff --git a/src/core/transformations/blur_linear.cpp b/src/core/transformations/blur_linear.cpp
index c24f9e8..5c2f84f 100644
--- a/src/core/transformations/blur_linear.cpp
+++ b/src/core/transformations/blur_linear.cpp
@@ -13,12 +13,29 @@ BlurLinear::BlurLinear(PNM* img, ImageViewer* iv) :
 PNM* BlurLinear::transform()
 {
     int maskSize = getParameter("size").toInt();
-    QList<QVariant> tmpMask = getParameter("mask").toList();
-    bool normalize = getParameter("normalize").toBool();
+       QList<QVariant> tmpMask = getParameter("mask").toList();
+       bool normalize = getParameter("normalize").toBool();
 
-    math::matrix<float> mask(maskSize, maskSize);
+       math::matrix<float> mask(maskSize, maskSize);
 
-    qDebug() << Q_FUNC_INFO << "Not implemented yet!";
+        int index =  0;
+         float sum = 0;
+       for (int x = 0; x < maskSize; x++) {
+             for (int y = 0; y < maskSize; y++) {
+              mask[x][y] = tmpMask.at(index).toDouble();
+              index++;
+              sum = sum +  mask[x][y];
+             }
+       }
 
-    return convolute(mask, RepeatEdge);
+       if(normalize == true && sum != 0.0 ){
+
+           for (int x = 0; x < maskSize; x++) {
+                 for (int y = 0; y < maskSize; y++) {
+                  mask[x][y] = mask[x][y]  / sum;
+
+                 }
+           }
+       }
+    return convolute(mask, CyclicEdge);
 }
diff --git a/src/core/transformations/blur_uniform.cpp b/src/core/transformations/blur_uniform.cpp
index 36604c4..fb199cc 100644
--- a/src/core/transformations/blur_uniform.cpp
+++ b/src/core/transformations/blur_uniform.cpp
@@ -14,7 +14,15 @@ math::matrix<float> BlurUniform::getMask(int size, Mode)
 {
     math::matrix<float> mask(size, size);
 
-    qDebug() << Q_FUNC_INFO << "Not implemented yet!";
+    for(int i=0;i<size;i++)
+    {
+        for(int j=0;j<size;j++)
+        {
+            mask[i][j]=1.00;
+
+        }
+    }
+
 
     return mask;
 }
diff --git a/src/core/transformations/convolution.cpp b/src/core/transformations/convolution.cpp
index 71864b7..41c963f 100644
--- a/src/core/transformations/convolution.cpp
+++ b/src/core/transformations/convolution.cpp
@@ -22,20 +22,98 @@ math::matrix<float> Convolution::getMask(int size, Mode mode = Normalize)
 {
     math::matrix<float> mask(size, size);
 
-    qDebug() << Q_FUNC_INFO << "Not implemented yet!";
+    for (int x=0; x<size; x++)
+            for (int y=0; y<size; y++)
+           {
+            mask[x][y] = 0;
+           }
+
+     int half=size/2;
+
+     mask[half][half]=1;
+
 
     return mask;
 }
 
 /** Does the convolution process for all pixels using the given mask. */
-PNM* Convolution::convolute(math::matrix<float> mask, Mode mode = RepeatEdge)
+PNM* Convolution::convolute(math::matrix<float> mask, Mode mode = CyclicEdge)
 {
     int width  = image->width(),
         height = image->height();
+    int size=mask.rowno();
 
     PNM* newImage = new PNM(width, height, image->format());
+     math::matrix<float> red_window(size, size);
+     math::matrix<float> blue_window(size, size);
+     math::matrix<float> gray_window(size, size);
+     math::matrix<float> green_window(size, size);
+
+    float mask_weight=sum(mask);
+    float red_sum;
+    float green_sum;
+    float blue_sum;
+    float gray_sum;
+
+
+
+    for (int x=0; x<width; x++)
+            for (int y=0; y<height; y++)
+            {
+
+                red_window=getWindow(x,y,size,RChannel,mode);
+                blue_window=getWindow(x,y,size,BChannel,mode);
+                green_window=getWindow(x,y,size,GChannel,mode);
+                //gray_window=getWindow(x,y,size,LChannel,mode);
+
+
+                red_window=join(red_window,mask);
+                blue_window=join(blue_window,mask);
+                green_window=join(green_window,mask);
+
+                //gray_window=join(gray_window,mask);
+
+                red_sum=sum(red_window);
+                green_sum=sum(green_window);
+                blue_sum=sum(blue_window);
+                //gray_sum=sum(gray_window);
+
+
+                if(mask_weight>0)
+                {
+                    red_sum=red_sum/mask_weight;
+                    blue_sum=blue_sum/mask_weight;
+                    green_sum=green_sum/mask_weight;
+                   //gray_sum=gray_sum/mask_weight;
+                }
+
+
+
+
+                if(red_sum>=0 && red_sum<=255 && green_sum>=0 && green_sum<=255 && blue_sum>=0 && blue_sum<=255)
+                {
+                newImage->setPixel(x,y, QColor(red_sum,green_sum,blue_sum).rgb());
+                }
+                else if (red_sum>=0 && red_sum<=255 && green_sum>=0 && green_sum<=255)
+                {
+                int old_blue = qBlue(newImage->pixel(x,y));
+                newImage->setPixel(x,y, QColor(red_sum,green_sum,old_blue).rgb());
+                }
+                else if (blue_sum>=0 && blue_sum<=255 && green_sum>=0 && green_sum<=255)
+                {
+                int old_red = qRed(newImage->pixel(x,y));
+                newImage->setPixel(x,y, QColor(old_red,green_sum,blue_sum).rgb());
+                }
+                else if (blue_sum>=0 && blue_sum<=255 && red_sum>=0 && red_sum<=255)
+                {
+                int old_green = qGreen(newImage->pixel(x,y));
+                newImage->setPixel(x,y, QColor(red_sum,old_green,blue_sum).rgb());
+                }
+
+
+            }
+
 
-    qDebug() << Q_FUNC_INFO << "Not implemented yet!";
 
     return newImage;
 }
@@ -48,7 +126,12 @@ const math::matrix<float> Convolution::join(math::matrix<float> A, math::matrix<
     int size = A.rowno();
     math::matrix<float> C(size, size);
 
-    qDebug() << Q_FUNC_INFO << "Not implemented yet!";
+    for (int x=0; x<size; x++)
+            for (int y=0; y<size; y++)
+           {     
+                C[x][y]=A[x][y]*B[x][y];
+           }
+
 
     return C;
 }
@@ -58,7 +141,15 @@ const float Convolution::sum(const math::matrix<float> A)
 {
     float sum = 0.0;
 
-    qDebug() << Q_FUNC_INFO << "Not implemented yet!";
+    int size=A.rowno();
+
+    for (int x=0; x<size; x++)
+            for (int y=0; y<size; y++)
+           {
+            sum=sum+A[x][y];
+           }
+
+
 
     return sum;
 
@@ -70,8 +161,20 @@ const math::matrix<float> Convolution::reflection(const math::matrix<float> A)
 {
     int size = A.rowno();
     math::matrix<float> C(size, size);
+    int counter_i=0;
+    int counter_j=0;
+
+
+    for (int x=size-1; x>=0; x--)
+    {
+            for (int y=size-1; y>=0; y--)
+           {
+            C[x][y]=A[counter_i][counter_j];
+            counter_j++;
+           }
+       counter_i++;
+    }
 
-    qDebug() << Q_FUNC_INFO << "Not implemented yet!";
 
     return C;
 }
diff --git a/src/core/transformations/transformation.cpp b/src/core/transformations/transformation.cpp
index 18a3e0a..7d22024 100644
--- a/src/core/transformations/transformation.cpp
+++ b/src/core/transformations/transformation.cpp
@@ -99,34 +99,59 @@ QRgb Transformation::getPixel(int x, int y, Mode mode)
 }
 
 /** Returns a pixel using the Cyclic mode:
- *  pixel(x,y) = pixel(x%width, y%width);
+ *
  */
+
+
 QRgb Transformation::getPixelCyclic(int x, int y)
 {
-    qDebug() << Q_FUNC_INFO << "Not implemented yet!";
+    int height=image->height();
+    int width=image->width();
+
+    /*
+    if(x>width) x=x%width;
+    if(y>height) y=y%height;
+    if(x<0) x=width-x;
+    if(y<0) y=height-y;
+    */
+
+    x=(width+(x%width))%width;
+    y=(height+(y%height))%height;
 
     return image->pixel(x,y);
 }
 
-/**
-  * Returns a given pixel
-  * If the pixel is out of image boundaries Black is returned;
-  */
+
 QRgb Transformation::getPixelNull(int x, int y)
 {
-    qDebug() << Q_FUNC_INFO << "Not implemented yet!";
+    int height=image->height();
+    int width=image->width();
 
-    return image->pixel(x,y);
+    QRgb pixel = image->pixel(x,y);
+
+    if(x>width || x<0 || y>height || y<0)
+    {
+        int v=PIXEL_VAL_MAX;
+        image->setPixel(x,y, QColor(v,v,v).rgb());
+    }
+
+    return pixel;
 }
 
-/**
-  * Returns given pixel.
-  * If the pixel is out of image boundaries
-  * the nearest edge pixel is given
-  */
+
 QRgb Transformation::getPixelRepeat(int x, int y)
 {
-    qDebug() << Q_FUNC_INFO << "Not implemented yet!";
+
+    int height=image->height();
+    int width=image->width();
+
+
+    if(x>width) x=width;
+    if(y>height) y=height;
+    if(x<0) x=0;
+    if(y<0) y=0;
+
+
 
     return image->pixel(x,y);
 }
@@ -136,9 +161,26 @@ math::matrix<float> Transformation::getWindow(int x, int y, int size,
                                               Channel channel,
                                               Mode mode = RepeatEdge)
 {
-    math::matrix<float> window(size,size);
 
-    qDebug() << Q_FUNC_INFO << "Not implemented yet!";
+    math::matrix<float> window(size,size);
+    int temp,r;
+
+
+    r=size/2;
+
+    for(int i=-r;i<=r;i++)
+    {
+        for(int j=-r;j<=r;j++)
+        {
+
+            if(channel==RChannel) temp = qRed(getPixel(x+i,y+j, CyclicEdge));
+            if(channel==GChannel) temp = qGreen (getPixel(x+i,y+j, CyclicEdge));
+            if(channel==BChannel) temp = qBlue(getPixel(x+i,y+j, CyclicEdge));
+            //if(channel==LChannel) temp=  qGray(getPixel(i,j, mode));
+
+            window[i+r][j+r]=temp;
+        }
+    }
 
     return window;
 }