Ellipse Fitting in CSharp: Difference between revisions
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== System Requirement == | == System Requirement == | ||
{| style="text-align:center" border="1px" cellpadding="10" cellspacing="0" | {| style="text-align:center" border="1px" cellpadding="10" cellspacing="0" | ||
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== Source Code == | == Source Code == | ||
<source lang="csharp"> | |||
#region generate random points | #region generate random points | ||
System.Random r = new Random(); | System.Random r = new Random(); | ||
| Line 30: | Line 22: | ||
#region draw the points and the fitted ellipse | #region draw the points and the fitted ellipse | ||
Image | Image<Bgr, byte> img = new Image<Bgr, byte>(400, 400, new Bgr(Color.White)); | ||
foreach (PointF p in pts) | foreach (PointF p in pts) | ||
img.Draw(new CircleF(p, 2), new Bgr(Color.Green), 1); | img.Draw(new CircleF(p, 2), new Bgr(Color.Green), 1); | ||
| Line 38: | Line 30: | ||
ImageViewer.Show(img, String.Format("Time used: {0}milliseconds", watch.ElapsedMilliseconds)); | ImageViewer.Show(img, String.Format("Time used: {0}milliseconds", watch.ElapsedMilliseconds)); | ||
</source> | |||
== Result == | == Result == | ||
[[image:EllipsefittingExample.png]] | [[image:EllipsefittingExample.png]] | ||
Revision as of 06:05, 24 November 2010
System Requirement
| Component | Requirement | Detail |
|---|---|---|
| Emgu CV | Version 2.0.1.0 | Available only from SVN |
| Operation System | Cross Platform |
Source Code
#region generate random points
System.Random r = new Random();
int sampleCount = 100;
Ellipse modelEllipse = new Ellipse(new PointF(200, 200), new SizeF(150, 60), 30);
PointF[] pts = PointCollection.GeneratePointCloud(modelEllipse, sampleCount);
#endregion
Stopwatch watch = Stopwatch.StartNew();
Ellipse fittedEllipse = PointCollection.EllipseLeastSquareFitting(pts);
watch.Stop();
#region draw the points and the fitted ellipse
Image<Bgr, byte> img = new Image<Bgr, byte>(400, 400, new Bgr(Color.White));
foreach (PointF p in pts)
img.Draw(new CircleF(p, 2), new Bgr(Color.Green), 1);
img.Draw(fittedEllipse, new Bgr(Color.Red), 2);
#endregion
ImageViewer.Show(img, String.Format("Time used: {0}milliseconds", watch.ElapsedMilliseconds));Result
