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Jarosław Wieczorek 2021-04-15 20:31:10 +02:00
parent da94c0e5c9
commit e657afd5ae
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010/README.md
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# Rozwiązania laboratoria 10
Cały kod znajduje się w katalogu głównym ,,app/cpp/mysimplegimp''
Zmienieone pliki projektu dla zadania 10-ego znajdują się w katalogu ,,010/do_sprawdzenia/cpp/''

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010/do_sprawdzenia/cpp/edge_canny.cpp
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#include "edge_canny.h"
#include "blur_gaussian.h"
#include "conversion_grayscale.h"
#include "edge_sobel.h"
EdgeCanny::EdgeCanny(PNM* img) :
Convolution(img)
{
}
EdgeCanny::EdgeCanny(PNM* img, ImageViewer* iv) :
Convolution(img, iv)
{
}
void EdgeCanny::Calculate_XY(int i, int j, enum directions dir, int* x1, int* y1, int* x2, int* y2)
{
switch (dir)
{
case TOP_MIDDLE_BOTTOM_MIDDLE:
{
*x1 = i - 1;
*y1 = j;
*x2 = i + 1;
*y2 = j;
break;
}
case LEFT_MIDDLE_RIGHT_MIDDLE:
{
*x1 = i;
*y1 = j - 1;
*x2 = i;
*y2 = j + 1;
break;
}
case TOP_RIGHT_BOTTOM_LEFT:
{
*x1 = i - 1;
*y1 = j - 1;
*x2 = i + 1;
*y2 = j + 1;
break;
}
case TOP_LEFT_BOTTOM_RIGHT:
{
*x1 = i - 1;
*y1 = j + 1;
*x2 = i + 1;
*y2 = j - 1;
break;
}
}
}
PNM* EdgeCanny::transform()
{
int width = image->width();
int height = image->height();
int upper_thresh = getParameter("upper_threshold").toInt();
int lower_thresh = getParameter("lower_threshold").toInt();
PNM* newImage = new PNM(width, height, image->format());
// Create grayscale
ConversionGrayscale* grayscale = new ConversionGrayscale(image);
PNM* gray_image = grayscale->transform();
// Blur grayscale
BlurGaussian* blur_gaussian = new BlurGaussian(gray_image);
blur_gaussian->setParameter("size", 3);
blur_gaussian->setParameter("sigma", 1.6);
PNM* blur_image = blur_gaussian->transform();
// Calculate Gx and Gy used EdgeSobel
EdgeSobel *es = new EdgeSobel(blur_image);
math::matrix<float>Gx = *es->rawHorizontalDetection();
math::matrix<float>Gy = *es->rawVerticalDetection();
// Define directions
// Matrix of pixel power
math::matrix<float> pixelPower(width, height);
// Marix od pixel Angle
math::matrix<float> pixelAngle(width, height);
// Matrix of pixel directions
math::matrix<directions> pixelDirection(width, height);
// Matrix of edges
math::matrix<bool> edges(width, height);
for (int i = 0; i < width; i++)
{
for (int j = 0; j < height; j++)
{
// Calculate current pixel angle
pixelAngle[i][j] = atan2(Gy[i][j], Gx[i][j]) * 180 / M_PI;
// Calculate current pixel power
pixelPower[i][j] = sqrt(pow(Gx[i][j], 2) + pow(Gy[i][j], 2));
// Set current pixel direction
if ((pixelAngle[i][j] > 22.5 && pixelAngle[i][j] <= 67.5) ||
(pixelAngle[i][j] > 202.5 && pixelAngle[i][j] <= 247.5))
{
pixelDirection[i][j] = TOP_LEFT_BOTTOM_RIGHT;
}
else if ((pixelAngle[i][j] > 67.5 && pixelAngle[i][j] <= 112.5) ||
(pixelAngle[i][j] > 247.5 && pixelAngle[i][j] <= 292.5))
{
pixelDirection[i][j] = TOP_MIDDLE_BOTTOM_MIDDLE;
}
else if ((pixelAngle[i][j] > 112.5 && pixelAngle[i][j] <= 157.5) ||
(pixelAngle[i][j] > 292.5 && pixelAngle[i][j] <= 337.5))
{
pixelDirection[i][j] = TOP_RIGHT_BOTTOM_LEFT;
}
else
{
pixelDirection[i][j] = LEFT_MIDDLE_RIGHT_MIDDLE;
}
}
}
// Detect edges
for (int i = 0; i < width; i++)
{
for (int j = 0; j < height; j++)
{
if (pixelDirection[i][j] == TOP_MIDDLE_BOTTOM_MIDDLE)
{
if (pixelPower[i][j] > pixelPower[i-1][j] &&
pixelPower[i][j] > pixelPower[i+1][j] &&
pixelPower[i][j] > upper_thresh)
{
edges[i][j] = true;
}
}
else if (pixelDirection[i][j] == LEFT_MIDDLE_RIGHT_MIDDLE)
{
if (pixelPower[i][j] > pixelPower[i][j-1] &&
pixelPower[i][j] > pixelPower[i][j+1] &&
pixelPower[i][j] > upper_thresh)
{
edges[i][j]=true;
}
}
else if (pixelDirection[i][j] == TOP_LEFT_BOTTOM_RIGHT)
{
if (pixelPower[i][j] > pixelPower[i-1][j+1] &&
pixelPower[i][j] > pixelPower[i+1][j-1] &&
pixelPower[i][j] > upper_thresh)
{
edges[i][j]=true;
}
}
else if (pixelDirection[i][j] == TOP_RIGHT_BOTTOM_LEFT)
{
if (pixelPower[i][j] > pixelPower[i+1][j+1] &&
pixelPower[i][j] > pixelPower[i-1][j-1] &&
pixelPower[i][j] > upper_thresh)
{
edges[i][j]=true;
}
}
}
}
// Set variables
int x1 = 0;
int y1 = 0;
int x2 = 0;
int y2 = 0;
for (int i = 0; i < width; i++)
{
for (int j = 0; j < height; j++)
{
if (edges[i][j] == true)
{
Calculate_XY(i, j, pixelDirection[i][j], &x1, &y1, &x2, &y2);
if (x1 < width && y1 < height && edges[x1][y1] != true)
{
if (pixelPower[x1][y1] > lower_thresh && pixelDirection[x1][y1] == pixelDirection[i][j])
{
int x11 = 0;
int y11 = 0;
int x12 = 0;
int y12 = 0;
Calculate_XY(x1, y1, pixelDirection[x1][y1], &x11, &y11, &x12, &y12);
if (x11 < width && y11 < height && x12 < width && y12 < height)
{
if (pixelPower[x11][y11] < pixelPower[x1][y1] && pixelPower[x12][y12] < pixelPower[x1][y1])
{
edges[x1][y1] = true;
}
}
else if (x11 < width && y11 < height)
{
if (pixelPower[x11][y11] < pixelPower[x1][y1])
{
edges[x1][y1] = true;
}
}
else if (x12 < width && y12 < height)
{
if (pixelPower[x12][y12] < pixelPower[x1][y1])
{
edges[x1][y1] = true;
}
}
}
}
if (x2 < width && y2 < height && edges[x2][y2] != true)
{
if (pixelPower[x2][y2] > lower_thresh && pixelDirection[x2][y2] == pixelDirection[i][j])
{
int x21 = 0;
int y21 = 0;
int x22 = 0;
int y22 = 0;
Calculate_XY(x2, y2, pixelDirection[x2][y2], &x21, &y21, &x22, &y22);
if (x21 < width && y21 < height && x22 < width && y22 < height)
{
if (pixelPower[x21][y21] < pixelPower[x2][y2] && pixelPower[x22][y22] < pixelPower[x2][y2])
{
edges[x2][y2] = true;
}
}
else if (x21 < width && y21 < height)
{
if (pixelPower[x21][y21] < pixelPower[x2][y2])
{
edges[x2][y2] = true;
}
}
else if (x22 < width && y22 < height)
{
if (pixelPower[x22][y22] < pixelPower[x2][y2])
{
edges[x2][y2] = true;
}
}
}
}
}
}
}
// Prepare new image
for (int i = 0; i < width; i++)
{
for (int j = 0; j < height; j++)
{
if (edges[i][j] == true)
{
newImage->setPixel(i, j, 255);
}
else
{
newImage->setPixel(i, j, 0);
}
}
}
return newImage;
}

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010/do_sprawdzenia/cpp/edge_canny.h
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#ifndef EDGECANNY_H
#define EDGECANNY_H
#include "convolution.h"
class EdgeCanny : public Convolution
{
public:
EdgeCanny(PNM*);
EdgeCanny(PNM*, ImageViewer*);
virtual PNM* transform();
enum directions {
TOP_LEFT_BOTTOM_RIGHT,
TOP_RIGHT_BOTTOM_LEFT,
TOP_MIDDLE_BOTTOM_MIDDLE,
LEFT_MIDDLE_RIGHT_MIDDLE
};
void Calculate_XY(int i, int j, enum directions dir, int* x1, int* y1, int* x2, int* y2);
private:
};
#endif // EDGECANNY_H

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010/do_sprawdzenia/cpp/image1.png
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