ZPRG13.10_02

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Vycho_13._10
{
    class Program
    {
        static void Main(string[] args)
        {

            byte[] data =  File.ReadAllBytes("lena.bmp");
            int sirka = BitConverter.ToInt32(data, 18);
            int vyska = BitConverter.ToInt32(data, 22);
            int offset = BitConverter.ToInt32(data, 10);

           string scale = ",-=+*#%@";

           int pos = offset;
           for (int i = 0; i< sirka; i++)
            {
                for (int j = 0; j < vyska; j++)
                {
                    byte B = data[pos++];
                    byte G = data[pos++];
                    byte R = data[pos++];
                    int luminance = (int)(0.2126 * R + 0.7152 * G + 0.0722 * B); // 0-255
                    int index = (luminance * 8) / 255;
                    char character = scale[index]; //0-8
                    Console.Write(character);
                }
                Console.WriteLine();

            }
            Console.ReadKey();

        }
    }
}