public string ExtractMessage()
{
var bitsOutput = "";
var counter = 0;
var bitTextParser = new BitTextParser();
var bitsDelimiter = bitTextParser.TextToBits(delimiter);
var widthRange = range(Image.Width);
var heigthRange = range(Image.Height);
try
{
foreach (int w in widthRange)
{
foreach (int h in heigthRange)
{
if (w % 2 == 0 && h % 2 == 0)
{
bitsOutput += (Image.GetPixel(w, h).R & 1).ToString();
if (++counter % 8 == 0 && bitsOutput.EndsWith(bitsDelimiter))
{
throw new Exception("delimter reached");
}
}
}
}
}
catch
{
}
return(bitTextParser.BitsToText(bitsOutput.Remove(bitsOutput.Length - 8)));
}
public void InsertMessage(string message, string outputImgPath)
{
int counter = 0;
var bits = new BitTextParser().TextToBits(message + delimiter);
var watermarkedColor = new WatermarkedColor();
var widthRange = range(Image.Width);
var heigthRange = range(Image.Height);
foreach (int w in widthRange)
{
foreach (int h in heigthRange)
{
if (w % 2 == 0 && h % 2 == 0 && counter < bits.Length)
{
var oldPixel = Image.GetPixel(w, h);
var newPixel = watermarkedColor.getWaterMarked(
bits[counter++], oldPixel);
Image.SetPixel(w, h, newPixel);
}
}
}
Image.Save(outputImgPath);
}
