How to get values 1 or 0 from binary images?

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C#

Image<Gray, Byte> image = new Image<Gray, byte>(Openfile.FileName);
pictureBox1.Image = image.ToBitmap();
image1 = image1.ThresholdBinary(new Gray(50), new Gray(255));

I open an image from my desktop and convert it to grayscale and then binary. I want to get either the values 1 or 0 from binary images in order to storage in matrix. How can I do that?? I am using emgucv.

Posted 1-Mar-14 13:58pm

Victor Solorzano

Updated 1-Mar-14 18:52pm

Sampath Lokuge

v2

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BillWoodruff 1-Mar-14 20:17pm

You might consider posting a question on the EmguCV C# discussion group:

http://www.emgu.com/forum/viewforum.php?f=7&sid=411dd7bbf4f46dbae2f88f1f6d588f74

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User 59241 · Answer 1 · 2014-03-01T22:23:00

Remember a black and white image has values 0 and 255. So if you want 0 and 1 then either:

C#

image = image.ThresholdBinary(new Gray(50), new Gray(255));

 for (int v = 0; v < image.Height; v++)
 {
     for (int u = 0; u < image.Width; u++)
     {
         int a = image.Data[v, u, 0] & 1; //Get Pixel
    }
 }

OR

C#

image = image.ThresholdBinary(new Gray(50), new Gray(1));

for (int v = 0; v < image.Height; v++)
{
    for (int u = 0; u < image.Width; u++)
    {
        int a = image.Data[v, u, 0]; //Get Pixel
    }
}

In this example we are using the Data property of the image. http://www.emgu.com/wiki/index.php/Working_with_Images[^]