Zadanie 6

06/do_sprawdzenia/cpp/noise_bilateral.cpp

@@ -0,0 +1,98 @@
+#include "noise_bilateral.h"
+
+NoiseBilateral::NoiseBilateral(PNM* img) :
+    Convolution(img)
+{
+}
+
+NoiseBilateral::NoiseBilateral(PNM* img, ImageViewer* iv) :
+    Convolution(img, iv)
+{
+}
+
+PNM* NoiseBilateral::transform()
+{
+    int width  = image->width();
+    int height = image->height();
+
+    PNM* newImage = new PNM(width, height, image->format());
+
+    sigma_d = getParameter("sigma_d").toInt();
+    sigma_r = getParameter("sigma_r").toInt();
+
+    radius = sigma_d;
+
+    for (int x = 0; x < width; x++)
+    {
+        for (int y = 0; y < height; y++)
+        {
+            if (image->format() == QImage::Format_Indexed8)
+            {
+                // Get calculated value for LChannel and set as new pixel
+                newImage->setPixel(x, y, calcVal(x, y, LChannel));
+            }
+            else
+            {
+               // Get calculated values for RGB channels
+               int r_calc = calcVal(x, y, RChannel);
+               int g_calc = calcVal(x, y, GChannel);
+               int b_calc = calcVal(x, y, BChannel);
+
+
+               QColor color = QColor(r_calc, g_calc, b_calc);
+               newImage->setPixel(x, y, color.rgb());
+            }
+        }
+    }
+
+    return newImage;
+}
+
+int NoiseBilateral::calcVal(int x, int y, Channel channel)
+{
+    // Set variables
+    float top = 0;
+    float bottom = 0;
+
+    // Get window
+    math::matrix<float> window = getWindow(x,y, radius, channel, RepeatEdge);
+
+    // Get size of matrix
+    int window_row_number = window.rowno();
+    int window_col_number = window.colno();
+
+    // Get central value
+    float central = window[window_row_number / 2][window_col_number / 2];
+
+    for (int i = 0; i < window_col_number; i++)
+    {
+        for (int j = 0; j < window_row_number; j++)
+        {
+            // Get Point in (i, j)
+            QPoint p1(i,j);
+
+            // Get second Point
+            QPoint p2(window_row_number / 2, window_col_number / 2);
+
+            // Calculate top value
+            top = top + window[i][j] * colorCloseness(window[i][j], central) * spatialCloseness(p1, p2);
+
+            // Calculate bottom value
+            bottom = bottom + colorCloseness(window[i][j], central) * spatialCloseness(p1, p2);
+        }
+    }
+
+   return top / bottom;
+}
+
+float NoiseBilateral::colorCloseness(int val1, int val2)
+{
+    float result = exp(-(pow(val1 - val2, 2) / (2 * sigma_r * sigma_r)));
+    return result;
+}
+
+float NoiseBilateral::spatialCloseness(QPoint point1, QPoint point2)
+{
+    float result = exp(-(pow(point1.x() - point2.x(), 2) + pow(point1.y() - point2.y(), 2) / (2 * sigma_d * sigma_d)));
+    return result;
+}

06/do_sprawdzenia/cpp/noise_median.cpp

@@ -0,0 +1,112 @@
+#include "noise_median.h"
+
+NoiseMedian::NoiseMedian(PNM* img) :
+    Convolution(img)
+{
+}
+
+NoiseMedian::NoiseMedian(PNM* img, ImageViewer* iv) :
+    Convolution(img, iv)
+{
+}
+
+PNM* NoiseMedian::transform()
+{
+    int width  = image->width();
+    int height = image->height();
+
+    PNM* newImage = new PNM(width, height, image->format());
+
+
+    for (int i = 0; i < width; i++)
+    {
+        for (int j = 0; j < height; j++)
+        {
+            if (image->format() == QImage::Format_Indexed8)
+            {
+                // Get median value for LChannel and set as new pixel
+                newImage->setPixel(i, j, getMedian(i, j, LChannel));
+            }
+            else
+            {
+                // Get median values for RGB channels
+                int r_med = getMedian(i, j, RChannel);
+                int g_med = getMedian(i, j, GChannel);
+                int b_med = getMedian(i, j, BChannel);
+
+                // Create new color
+                QColor color = QColor(r_med, g_med, b_med);
+
+                // Set new pixel with rgb color
+                newImage->setPixel(i, j, color.rgb());
+            }
+        }
+    }
+
+    return newImage;
+}
+
+int NoiseMedian::getMedian(int x, int y, Channel channel)
+{
+    int radius = getParameter("radius").toInt();
+    int window_size = 2 * radius + 1;
+
+    math::matrix<int> window = getWindow(x, y, window_size, channel, RepeatEdge);
+    std::vector<int> result; //list does not provide a subscript operator
+
+    for(std::size_t i=0; i < window.rowno(); i++){
+        for(std::size_t j=0; j < window.colno(); j++){
+            result.push_back(window[i][j]);
+        }
+    }
+    std::sort(result.begin(), result.end());
+    int middle = result.size()/2;
+    return result[middle];
+}
+
+/*
+// Different solution
+int NoiseMedian::getMedian(int x, int y, Channel channel)
+{
+    int radius = getParameter("radius").toInt();
+    int window_size = 2 * radius + 1;
+
+    int powSize = size*size;
+    int window[powSize];
+
+    int sr = 0;
+    int sc = 0;
+    int lp = 0;
+    float value;
+
+    for (sr = x-radius; sr <= x+radius; sr++)
+    {
+        for (sc = y-radius; sc <= y+radius; sc++)
+        {
+            QRgb color = getPixel(sr, sc, CyclicEdge);
+
+            switch(channel)
+            {
+                case LChannel:
+                    value = qGray (color);
+                    break;
+                case RChannel:
+                    value = qRed  (color);
+                     break;
+                case GChannel:
+                    value = qGreen(color);
+                    break;
+                case BChannel:
+                    value = qBlue (color);
+                    break;
+            }
+               window[lp++] = value;
+        }
+    }
+
+    std::sort(window, window + powSize);
+    int center = powSize / 2;
+    int result =  window[center];
+    return result;
+}
+*/

app/cpp/mysimplegimp/src/core/transformations/noise_bilateral.cpp

@@ -19,30 +19,80 @@ PNM* NoiseBilateral::transform()
 
     sigma_d = getParameter("sigma_d").toInt();
     sigma_r = getParameter("sigma_r").toInt();
+
     radius = sigma_d;
 
-    qDebug() << Q_FUNC_INFO << "Not implemented yet!";
+    for (int x = 0; x < width; x++)
+    {
+        for (int y = 0; y < height; y++)
+        {
+            if (image->format() == QImage::Format_Indexed8)
+            {
+                // Get calculated value for LChannel and set as new pixel
+                newImage->setPixel(x, y, calcVal(x, y, LChannel));
+            }
+            else
+            {
+               // Get calculated values for RGB channels
+               int r_calc = calcVal(x, y, RChannel);
+               int g_calc = calcVal(x, y, GChannel);
+               int b_calc = calcVal(x, y, BChannel);
+
+
+               QColor color = QColor(r_calc, g_calc, b_calc);
+               newImage->setPixel(x, y, color.rgb());
+            }
+        }
+    }
 
     return newImage;
 }
 
 int NoiseBilateral::calcVal(int x, int y, Channel channel)
 {
-    qDebug() << Q_FUNC_INFO << "Not implemented yet!";
+    // Set variables
+    float top = 0;
+    float bottom = 0;
 
-    return 0;
+    // Get window
+    math::matrix<float> window = getWindow(x,y, radius, channel, RepeatEdge);
+
+    // Get size of matrix
+    int window_row_number = window.rowno();
+    int window_col_number = window.colno();
+
+    // Get central value
+    float central = window[window_row_number / 2][window_col_number / 2];
+
+    for (int i = 0; i < window_col_number; i++)
+    {
+        for (int j = 0; j < window_row_number; j++)
+        {
+            // Get Point in (i, j)
+            QPoint p1(i,j);
+
+            // Get second Point
+            QPoint p2(window_row_number / 2, window_col_number / 2);
+
+            // Calculate top value
+            top = top + window[i][j] * colorCloseness(window[i][j], central) * spatialCloseness(p1, p2);
+
+            // Calculate bottom value
+            bottom = bottom + colorCloseness(window[i][j], central) * spatialCloseness(p1, p2);
+        }
+    }
+
+   return top / bottom;
 }
 
 float NoiseBilateral::colorCloseness(int val1, int val2)
 {
-    qDebug() << Q_FUNC_INFO << "Not implemented yet!";
+    float result = exp(-(pow(val1 - val2, 2) / (2 * sigma_r * sigma_r)));
-
+    return result;
-    return 0;
 }
 
 float NoiseBilateral::spatialCloseness(QPoint point1, QPoint point2)
 {
-    qDebug() << Q_FUNC_INFO << "Not implemented yet!";
+    float result = exp(-(pow(point1.x() - point2.x(), 2) + pow(point1.y() - point2.y(), 2) / (2 * sigma_d * sigma_d)));
-
+    return result;
-    return 0;
 }

app/cpp/mysimplegimp/src/core/transformations/noise_median.cpp

@@ -17,7 +17,31 @@ PNM* NoiseMedian::transform()
 
     PNM* newImage = new PNM(width, height, image->format());
 
-    qDebug() << Q_FUNC_INFO << "Not implemented yet!";
+
+    for (int i = 0; i < width; i++)
+    {
+        for (int j = 0; j < height; j++)
+        {
+            if (image->format() == QImage::Format_Indexed8)
+            {
+                // Get median value for LChannel and set as new pixel
+                newImage->setPixel(i, j, getMedian(i, j, LChannel));
+            }
+            else
+            {
+                // Get median values for RGB channels
+                int r_med = getMedian(i, j, RChannel);
+                int g_med = getMedian(i, j, GChannel);
+                int b_med = getMedian(i, j, BChannel);
+
+                // Create new color
+                QColor color = QColor(r_med, g_med, b_med);
+
+                // Set new pixel with rgb color
+                newImage->setPixel(i, j, color.rgb());
+            }
+        }
+    }
 
     return newImage;
 }
@@ -25,8 +49,64 @@ PNM* NoiseMedian::transform()
 int NoiseMedian::getMedian(int x, int y, Channel channel)
 {
     int radius = getParameter("radius").toInt();
+    int window_size = 2 * radius + 1;
 
-    qDebug() << Q_FUNC_INFO << "Not implemented yet!";
+    math::matrix<int> window = getWindow(x, y, window_size, channel, RepeatEdge);
+    std::vector<int> result; //list does not provide a subscript operator
 
-    return 0;
+    for(std::size_t i=0; i < window.rowno(); i++){
+        for(std::size_t j=0; j < window.colno(); j++){
+            result.push_back(window[i][j]);
         }
+    }
+    std::sort(result.begin(), result.end());
+    int middle = result.size()/2;
+    return result[middle];
+}
+
+/*
+// Different solution
+int NoiseMedian::getMedian(int x, int y, Channel channel)
+{
+    int radius = getParameter("radius").toInt();
+    int window_size = 2 * radius + 1;
+
+    int powSize = size*size;
+    int window[powSize];
+
+    int sr = 0;
+    int sc = 0;
+    int lp = 0;
+    float value;
+
+    for (sr = x-radius; sr <= x+radius; sr++)
+    {
+        for (sc = y-radius; sc <= y+radius; sc++)
+        {
+            QRgb color = getPixel(sr, sc, CyclicEdge);
+
+            switch(channel)
+            {
+                case LChannel:
+                    value = qGray (color);
+                    break;
+                case RChannel:
+                    value = qRed  (color);
+                     break;
+                case GChannel:
+                    value = qGreen(color);
+                    break;
+                case BChannel:
+                    value = qBlue (color);
+                    break;
+            }
+               window[lp++] = value;
+        }
+    }
+
+    std::sort(window, window + powSize);
+    int center = powSize / 2;
+    int result =  window[center];
+    return result;
+}
+*/