C#

using System;
using System.Collections.Generic;
using System.Text;
using System.Threading;

namespace CollectionDictionary
{
	class Program
	{
		static void Main(string[] args)
		{
			bool[] array1 = new bool[10];
			bool[] array2 = new bool[10];
			FillBools(array1);
			Thread.Sleep(1000);
			FillBools(array2);
			PrintBools(array1);
			PrintBools(array2);

			Dictionary<int, bool[]=""> dict = new Dictionary<int, bool[]="">();
			dict[1] = array1;
			dict[2] = array2;

			PrintBools(dict[1]);
			PrintBools(dict[2]);
		}

		private static void FillBools(bool[] array)
		{
			Random r = new Random((int)DateTime.Now.Ticks);
			for (int i = 0; i < array.Length; i++)
			{
				array[i] = r.Next() % 2 == 0 ? true : false;
			}
		}

		private static void PrintBools(bool[] array)
		{
			foreach(bool b in array)
			{
				Console.Write(b + ", ");
			}
			Console.WriteLine();
		}
	}
}</int,></int,>

mikefl wrote:

binarize

public byte[] ConvertImage(Image image)
{
  using (MemoryStream ms = new MemoryStream())
  {
    image.Save(ms, ImageFormat.Gif);
    return ms.ToArray();
  }
}

foreach pixel in image<br />
{<br />
int greyValue = (R + G + B) / 3;<br />
if(greyValue >= threshold)<br />
   setPixel(255, 255, 255); //white<br />
else<br />
   setPixel(0, 0, 0); //black<br />
}