Scanning images and for specific color positions

I have been trying to make a program that can scan an image with two colors (Black and White). The program will go through every pixel on the image, and find where all the pixels that are black are located and save the positions in a file. Another option is to create a new object (Like a 3D cube or a pre-made object) where the program detects a black pixel. I have been reading into Texture2D.GetPixel (https://docs.unity3d.com/ScriptReference/Texture2D.GetPixels.html) but it is really confusing. I have also looked online for aid but there isn't much. If anyone knows where I can find some more info like a video or anything that explains this that would be awesome. The image attached is just something I made using an online pixel editor, it is 34 by 34 pixels.

 

GetPixels() returns a "flattened" array which you can "convert" to 2D (if I recall correctly) with the formula: index = x + width * y.

Something like this will generate your cube-world-thingy:

Code (csharp):

1.  
2. Color[] results = texture.GetPixels();
3.  
4. for(int y = 0; y < texture.height; ++y)
5. {
6.    for(int x = 0; x < texture.width; ++x)
7.    {
8.        int index = x + texture.width * y;
9.  
10.        if(results[index] == Color.black)
11.            Instantiate(cubePrefab, new Vector3(x, 0, y), Quaternion.identity);
12.    }
13. }
14.  

Typed this here so there may be errors.