Computer Vision - Decoding a Morse Code Flashing LED

using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows.Forms;
using System.Drawing;
using System.Drawing.Imaging;
public unsafe class UnsafeBitmap
{

    Bitmap bitmap;



    int width;

    BitmapData bitmapData = null;

    Byte* pBase = null;



    public UnsafeBitmap(Bitmap bitmap)
    {

        this.bitmap = new Bitmap(bitmap);
    }

    public UnsafeBitmap(int width, int height)
    {

        this.bitmap = new Bitmap(width, height, PixelFormat.Format24bppRgb);

    }



    public void Dispose()
    {

        bitmap.Dispose();

    }



    public Bitmap Bitmap
    {
        get
        {

            return (bitmap);

        }

    }



    public struct PixelData
    {
        public byte blue;
        public byte green;
        public byte red;

    }



    private Point PixelSize
    {

        get
        {
            GraphicsUnit unit = GraphicsUnit.Pixel;
            RectangleF bounds = bitmap.GetBounds(ref unit);


            return new Point((int)bounds.Width, (int)bounds.Height);

        }

    }


    public void LockBitmap()
    {

        GraphicsUnit unit = GraphicsUnit.Pixel;

        RectangleF boundsF = bitmap.GetBounds(ref unit);
        Rectangle bounds = new Rectangle((int)boundsF.X,
     (int)boundsF.Y,

     (int)boundsF.Width,

      (int)boundsF.Height);



        width = (int)boundsF.Width * sizeof(PixelData);

        if (width % 4 != 0)
        {

            width = 4 * (width / 4 + 1);

        }

        bitmapData =

      bitmap.LockBits(bounds, ImageLockMode.ReadWrite, PixelFormat.Format24bppRgb);



        pBase = (Byte*)bitmapData.Scan0.ToPointer();

    }



    public PixelData GetPixel(int x, int y)
    {

        PixelData returnValue = *PixelAt(x, y);

        return returnValue;

    }



    public void SetPixel(int x, int y, PixelData colour)
    {

        PixelData* pixel = PixelAt(x, y);

        *pixel = colour;

    }



    public void UnlockBitmap()
    {

        bitmap.UnlockBits(bitmapData);

        bitmapData = null;

        pBase = null;
    }

    public PixelData* PixelAt(int x, int y)
    {

        return (PixelData*)(pBase + y * width + x * sizeof(PixelData));

    }

}