Hello World in CSharp

This example requires Emgu CV 1.5.0.0 and up

Contents

 [hide] 

• 1 Hello World - Version 1
  • 1.1 Emgu CV 3.0
  • 1.2 Emgu CV 1.5
• 2 Hello World - Version 2
  • 2.1 Emgu CV 3.0
  • 2.2 Emgu CV 2.x

Hello World - Version 1

We will start by the Hello World sample, written in C#

Emgu CV 3.0

[Expand]

Click to view source code

Emgu CV 1.5

[Expand]

Click to view source code

The above code will create an image of 400x200 with blue background color and the text "Hello, world" in green on the foreground. The image will be displayed a window named "Test Window".

Hello World - Version 2

Showing image using cvNamedWindow is good, but Emgu CV has an event better tool for the same purpose, that is, the ImageViewer class under Emgu.CV.UI namespace.

Emgu CV 3.0

[Collapse]

Click to view source code

using Emgu.CV;using Emgu.CV.CvEnum;using Emgu.CV.Structure;using Emgu.CV.UI;using System.Drawing;...//Create a 3 channel image of 400x200using (Mat img = new Mat(200, 400, DepthType.Cv8U, 3)) {   img.SetTo(new Bgr(255, 0, 0).MCvScalar); // set it to Blue color   //Draw "Hello, world." on the image using the specific font   CvInvoke.PutText(      img,       "Hello, world",       new System.Drawing.Point(10, 80),       FontFace.HersheyComplex,       1.0,       new Bgr(0, 255, 0).MCvScalar);      //Show the image using ImageViewer from Emgu.CV.UI   ImageViewer.Show(img, "Test Window");}

Emgu CV 2.x

[Expand]

Click to view source code