92 lines
2.1 KiB
C++
92 lines
2.1 KiB
C++
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#include "hough_lines.h"
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#include "bin_gradient.h"
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#include "edge_laplacian.h"
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#include "hough.h"
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#include <iostream>
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#include <Qt>
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#include <QPainter>
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HoughLines::HoughLines(PNM* img) :
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Transformation(img)
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{
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}
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HoughLines::HoughLines(PNM* img, ImageViewer* iv) :
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Transformation(img, iv)
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{
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}
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PNM* HoughLines::transform()
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{
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// Cut of value from the image;
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int threshold = getParameter("threshold").toInt();
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bool drawWholeLines = getParameter("draw_whole_lines").toBool();
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int theta_density = 3;
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PNM* newImage = new PNM(image->copy());
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EdgeLaplacian el(image);
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el.setParameter("size", 3);
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PNM* image_edge = el.transform();
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PNM* image_bin = BinarizationGradient(image_edge).transform();
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Hough h(image_edge);
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h.setParameter("theta_density", theta_density);
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h.setParameter("skip_edge_detection", true);
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PNM* image_hough = h.transform();
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int hough_width = image_hough->width();
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int hough_height = image_hough->height();
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int width = image_bin->width();
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int height = image_bin->height();
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QPainter qPainter (newImage);
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qPainter.setPen(Qt::red);
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for (int theta = 0; theta < hough_width; theta++)
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{
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for (int rho = 0; rho < hough_height; rho++)
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{
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int val = (int) qGray(image_hough->pixel(theta, rho));
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if (val > threshold)
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{
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double rtheta = ((double)theta / 3.0) * M_PI / 180.0;
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int rrho = rho - hough_height / 2;
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qPainter.drawLine(0, round(rrho / sin(rtheta)), width - 1, round((rrho - (width - 1) * cos(rtheta)) / sin(rtheta)));
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}
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}
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}
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int counter_pixels = 0;
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if (!drawWholeLines)
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{
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for (int x = 0; x < width; x++)
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{
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for (int y = 0; y < height; y++)
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{
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QRgb pixel = image_bin->pixel(x, y);
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if (qGray(pixel) == 0)
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{
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counter_pixels++;
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newImage->setPixel(x, y, image->pixel(x, y));
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}
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}
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}
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std::cout << "counter " << counter_pixels << std::endl;
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}
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return newImage;
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}
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