Edge Detection in Matlab through Visual Studio 2010

Here we will see how someone can execute matalb instructions through Visual Studio 2010 (C#).
First of all you have to open a Console Application project in VS2010. To execute this code you have to have installed Matlab in your PC. Also, you have to include the :
using System.Reflection;
and finally save on your desktop (or whereever you like) a JPEG image and load it from there (you'll need the whole path of your image).


The code below in C# is leading in the same results as executing in the Matlab Command line the following:
I = rgb2gray(imread('C:\users\cex\desktop\1.jpg'));imshow(I);O = edge(I,'sobel');imshow(O);

Processed JPEG

Original JPEG

So, the code in C#, in the Console Application will be:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Reflection;

namespace matlab1
{
    class Program
    {
        static void Main(string[] args)
        {
            //Get the type info

            Type matlabtype;
            matlabtype = Type.GetTypeFromProgID("matlab.application");

            //Create an instance of MATLAB

            object matlab;
            matlab = Activator.CreateInstance(matlabtype);

            //Prepare input as an object

            object[] arrayInput = new Object[] { "I = rgb2gray(imread('C:/users/cex/desktop/1.jpg'));imshow(I);O = edge(I,'sobel');imshow(O);" };

            //Call MATLAB method

            matlabtype.InvokeMember("Execute", BindingFlags.InvokeMethod, null, matlab, arrayInput);

            Console.ReadKey();


        }
    }
}
debugging this piece of code we will take open the matlab command window and the processed figure as shown below: