private void ellipseDetectionToolStripMenuItem_Click(object sender, EventArgs e)
{
OpenFileDialog ofd = new OpenFileDialog();
if(ofd.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
// load image
imMat = FxMatrixF.Load(ofd.FileName);
ieEllipseImage = new ImageElement(imMat, new ColorMap(ColorMapDefaults.Jet));
ieEllipseImage.lockMoving = true;
canvas_ellipse.AddElement(ieEllipseImage);
// add plot element
gpeEllipseImage = new GeometryPlotElement();
canvas_ellipse.AddElement(gpeEllipseImage);
var contours = new FxContour(imMat<0.2f);
WriteLine("Num Contours : " + contours.NumChains);
int i = 0;
float pe_pos_y = ieEllipseImage._Position.y;
foreach (var cont in contours.ChainList)
{
// draw the rectanges in main image
FxVector2f start = cont.RectStart ;
FxVector2f end = start + cont.RectSize;
FxMaths.Geometry.Rectangle r = new FxMaths.Geometry.Rectangle(start, end);
gpeEllipseImage.AddGeometry(r, false);
// draw the centroids
FxVector2f cen = cont.GetCentroid();
var l = new FxMaths.Geometry.Line(cen - new FxVector2f(0, 2), cen + new FxVector2f(0, 2));
l.LineWidth = 0.5f;
gpeEllipseImage.AddGeometry(l, false);
l = new FxMaths.Geometry.Line(cen - new FxVector2f(2, 0), cen + new FxVector2f(2, 0));
l.LineWidth = 0.5f;
gpeEllipseImage.AddGeometry(l, false);
// add the numbering of the contours
var t = new TextElement(i.ToString());
t._Position = cen;
t.FontColor = SharpDX.Color.Green;
t._TextFormat.fontSize = 16.0f;
canvas_ellipse.AddElement(t);
// show the chain vector in plot
{
FxVectorF vec_i = new FxVectorF(cont.Count);
FxVectorF vec_r = new FxVectorF(cont.Count);
vec_i[0] = cont[0].i;
vec_r[0] = cont[0].r;
for (int j = 1; j < cont.Count; j++)
{
vec_i[j] = vec_i[j - 1] + cont[j].i;
vec_r[j] = vec_r[j - 1] + cont[j].r;
}
// show the plot of this vector
var pe = new PloterElement(vec_i, PlotType.Lines, System.Drawing.Color.Blue);
pe._Position.x = ieEllipseImage._Position.x + ieEllipseImage.Size.x;
pe._Position.y = pe_pos_y;
pe.AddPlot(vec_r, PlotType.Lines, System.Drawing.Color.Red);
pe.CenterYOrigin();
pe.FitPlots();
canvas_ellipse.AddElement(pe);
// update the y of pe for the next one
pe_pos_y += pe.Size.y;
// debug the ellipse
for (int j = 0; j < cont.Count; j++)
{
imMat[(int)(vec_r[j] + cont.StartPoint.x), (int)(vec_i[j] + cont.StartPoint.y)] = 0.8f/contours.NumChains + 0.1f;
}
ieEllipseImage.UpdateInternalImage(imMat, new ColorMap(ColorMapDefaults.Jet));
}
i++;
}
canvas_ellipse.ReDraw();
}
}
