Examples with LineSegment2D_F32 georegression.struct.line.LineSegment2D_F32 used on opensource projects

Example 16 with LineSegment2D_F32

use of georegression.struct.line.LineSegment2D_F32 in project BoofCV by lessthanoptimal.

the class LineImageOps method pruneSmall.

public static void pruneSmall(List<LineSegment2D_F32> lines, float threshold) {
    threshold *= threshold;
    Iterator<LineSegment2D_F32> iter = lines.iterator();
    while (iter.hasNext()) {
        LineSegment2D_F32 l = iter.next();
        if (l.getLength2() <= threshold) {
            iter.remove();
        }
    }
}

Example 17 with LineSegment2D_F32

use of georegression.struct.line.LineSegment2D_F32 in project BoofCV by lessthanoptimal.

the class LineImageOps method convert.

/**
 * Find the point in which the line intersects the image border and create a line segment at those points
 */
public static LineSegment2D_F32 convert(LineParametric2D_F32 l, int width, int height) {
    double t0 = (0 - l.p.x) / l.getSlopeX();
    double t1 = (0 - l.p.y) / l.getSlopeY();
    double t2 = (width - l.p.x) / l.getSlopeX();
    double t3 = (height - l.p.y) / l.getSlopeY();
    Point2D_F32 a = computePoint(l, t0);
    Point2D_F32 b = computePoint(l, t1);
    Point2D_F32 c = computePoint(l, t2);
    Point2D_F32 d = computePoint(l, t3);
    List<Point2D_F32> inside = new ArrayList<>();
    checkAddInside(width, height, a, inside);
    checkAddInside(width, height, b, inside);
    checkAddInside(width, height, c, inside);
    checkAddInside(width, height, d, inside);
    if (inside.size() != 2) {
        return null;
    // System.out.println("interesting");
    }
    return new LineSegment2D_F32(inside.get(0), inside.get(1));
}

Example 18 with LineSegment2D_F32

use of georegression.struct.line.LineSegment2D_F32 in project BoofCV by lessthanoptimal.

the class ImageLinePanel method paintComponent.

@Override
public synchronized void paintComponent(Graphics g) {
    super.paintComponent(g);
    if (background == null)
        return;
    Graphics2D g2 = (Graphics2D) g;
    int w = background.getWidth();
    int h = background.getHeight();
    double scaleX = getWidth() / (double) w;
    double scaleY = getHeight() / (double) h;
    double scale = Math.min(scaleX, scaleY);
    if (scale > 1) {
        scale = 1;
    }
    g2.drawImage(background, 0, 0, (int) (scale * w), (int) (scale * h), 0, 0, w, h, null);
    g2.setStroke(new BasicStroke(3));
    for (LineSegment2D_F32 s : lines) {
        g2.setColor(Color.RED);
        g2.drawLine((int) (scale * s.a.x), (int) (scale * s.a.y), (int) (scale * s.b.x), (int) (scale * s.b.y));
        g2.setColor(Color.BLUE);
        g2.fillOval((int) (scale * s.a.x) - 1, (int) (scale * s.a.y) - 1, 3, 3);
        g2.fillOval((int) (scale * s.b.x) - 1, (int) (scale * s.b.y) - 1, 3, 3);
    }
}

Example 19 with LineSegment2D_F32

use of georegression.struct.line.LineSegment2D_F32 in project BoofCV by lessthanoptimal.

the class CommonGridRansacLineDetectorChecks method checkObvious.

/**
 * Give it a single straight line and see if it can detect it.  Allow the region size to be changed to check
 * for issues related to that
 * @param regionSize
 */
protected void checkObvious(int regionSize) {
    // System.out.println("regionSize = "+regionSize);
    int where = 25;
    GrayU8 edgeImage = new GrayU8(width, height);
    D derivX = GeneralizedImageOps.createSingleBand(derivType, width, height);
    D derivY = GeneralizedImageOps.createSingleBand(derivType, width, height);
    for (int i = 0; i < height; i++) {
        edgeImage.set(where, i, 1);
        GeneralizedImageOps.set(derivX, where, i, 20);
    }
    ModelManagerLinePolar2D_F32 manager = new ModelManagerLinePolar2D_F32();
    GridLineModelDistance distance = new GridLineModelDistance(0.9f);
    GridLineModelFitter fitter = new GridLineModelFitter(0.9f);
    ModelMatcher<LinePolar2D_F32, Edgel> matcher = new Ransac<>(123123, manager, fitter, distance, 25, 1);
    GridRansacLineDetector<D> alg = createDetector(regionSize, 5, matcher);
    alg.process(derivX, derivY, edgeImage);
    MatrixOfList<LineSegment2D_F32> lines = alg.getFoundLines();
    assertEquals(width / regionSize, lines.getWidth());
    assertEquals(height / regionSize, lines.getHeight());
    int gridCol = where / regionSize;
    for (int i = 0; i < lines.height; i++) {
        List<LineSegment2D_F32> l = lines.get(gridCol, i);
        assertTrue(l.size() == 1);
        LineSegment2D_F32 a = l.get(0);
        assertTrue(Math.abs(a.slopeY()) > 1);
        assertTrue(Math.abs(a.slopeX()) < 0.01);
    }
}

Example 20 with LineSegment2D_F32

use of georegression.struct.line.LineSegment2D_F32 in project BoofCV by lessthanoptimal.

the class TestConnectLinesGrid method checkAngleTolerance.

/**
 * Makes sure the angle tolerance parameter is correctly set and processed
 */
@Test
public void checkAngleTolerance() {
    MatrixOfList<LineSegment2D_F32> grid = new MatrixOfList<>(1, 1);
    grid.get(0, 0).add(new LineSegment2D_F32(0, 0, 2, 0));
    grid.get(0, 0).add(new LineSegment2D_F32(2, 0, 4, 4));
    // have the tolerance be too tight
    ConnectLinesGrid app = new ConnectLinesGrid(0.1, 1, 1);
    app.process(grid);
    assertEquals(2, grid.createSingleList().size());
    // now make the tolerance broader
    app = new ConnectLinesGrid(Math.PI, 1, 1);
    app.process(grid);
    assertEquals(1, grid.createSingleList().size());
}