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lpo-image-processing/08/do_sprawdzenia/cpp/edge_zero.cpp

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2021-04-06 13:34:01 +02:00
#include "edge_zero.h"
#include "edge_laplacian_of_gauss.h"
EdgeZeroCrossing::EdgeZeroCrossing(PNM* img) :
Convolution(img)
{
}
EdgeZeroCrossing::EdgeZeroCrossing(PNM* img, ImageViewer* iv) :
Convolution(img, iv)
{
}
PNM* EdgeZeroCrossing::transform()
{
int size = getParameter("size").toInt();
double sigma = getParameter("sigma").toDouble();
int t = getParameter("threshold").toInt();
int width = image->width();
int height = image->height();
int t_width;
int t_height;
PNM* newImage = new PNM(width, height, QImage::Format_Grayscale8);
EdgeLaplaceOfGauss *laplace_gauss = new EdgeLaplaceOfGauss(image);
laplace_gauss->setParameter("size", size);
laplace_gauss->setParameter("sigma", sigma);
PNM* transformed_image = laplace_gauss->transform();
t_width = transformed_image->width();
t_height = transformed_image->height();
for (int i = 0; i < t_width; i++)
{
for (int j = 0; j < t_height; j++)
{
math::matrix<float> window = laplace_gauss->getWindow(i, j, size, LChannel, RepeatEdge);
if (window.min() < (128 - t) && window.max() > (128 + t))
{
QRgb pixel = transformed_image->pixel(i, j);
newImage->setPixel(i, j, QColor(pixel).rgb());
}
else
{
newImage->setPixel(i, j, QColor(0,0,0).rgb());
}
}
}
return newImage;
}