Difference between revisions of "Minimum Enclosing Circle in CSharp"

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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">
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&lt;source lang="csharp">
 
#region generate random points
 
#region generate random points
 
System.Random r = new Random();
 
System.Random r = new Random();
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#region draw the points and the circle
 
#region draw the points and the circle
Image<Bgr, byte> img = new Image<Bgr, byte>(400, 400, new Bgr(Color.White));
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Image&lt;Bgr, byte> img = new Image&lt;Bgr, byte>(400, 400, new Bgr(Color.White));
 
img.Draw(circle, new Bgr(Color.Red), 1);
 
img.Draw(circle, new Bgr(Color.Red), 1);
 
foreach (PointF p in pts)
 
foreach (PointF p in pts)
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ImageViewer.Show(img, String.Format("Time used: {0} milliseconds", watch.ElapsedMilliseconds));
 
ImageViewer.Show(img, String.Format("Time used: {0} milliseconds", watch.ElapsedMilliseconds));
</source>
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&lt;/source>
  
 
== Result ==
 
== Result ==
 
[[image:MinimumEnclosingCircleExample.png]]
 
[[image:MinimumEnclosingCircleExample.png]]

Revision as of 03:31, 24 November 2010



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System Requirement

Component Requirement Detail
Emgu CV Version 2.0.1.0 Available only from SVN
Operation System Cross Platform

Source Code

<source lang="csharp">

  1. region generate random points

System.Random r = new Random(); int sampleCount = 100; Ellipse modelEllipse = new Ellipse(new PointF(200, 200), new SizeF(90, 60), -60); PointF[] pts = PointCollection.GeneratePointCloud(modelEllipse, sampleCount);

  1. endregion

Stopwatch watch = Stopwatch.StartNew(); CircleF circle = PointCollection.MinEnclosingCircle(pts); watch.Stop();

  1. region draw the points and the circle

Image<Bgr, byte> img = new Image<Bgr, byte>(400, 400, new Bgr(Color.White)); img.Draw(circle, new Bgr(Color.Red), 1); foreach (PointF p in pts)

  img.Draw(new CircleF(p, 2), new Bgr(Color.Green), 1);
  1. endregion

ImageViewer.Show(img, String.Format("Time used: {0} milliseconds", watch.ElapsedMilliseconds)); </source>

Result

MinimumEnclosingCircleExample.png