PNM* HoughLines::transform()
{
// Cut of value from the image;
int threshold = getParameter("threshold").toInt();
bool drawWholeLines = getParameter("draw_whole_lines").toBool();
PNM* newImage = new PNM(image->copy());
EdgeLaplacian* edgeLaplacian = new EdgeLaplacian(image);
edgeLaplacian->setParameter("size", 3);
image = edgeLaplacian->transform();
delete edgeLaplacian;
BinarizationGradient* binGradient = new BinarizationGradient(image);
image = binGradient->transform();
delete binGradient;
Hough* hough = new Hough(image);
hough->setParameter("theta_density" , 3);
hough->setParameter("skip_edge_detection", true);
image = hough->transform();
delete hough;
int width = image->width(),
height = image->height();
for (int theta = 0; theta < width; theta++) {
for (int rho = 0; rho < height; rho++) {
QRgb pixel = image->pixel(theta, rho);
if(qGray(pixel) > threshold)
newImage->setPixel(theta, rho, 1);
}
}
return newImage;
}
