/// <summary>
/// Test function, to generate the gray level picture
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void BtnGetGrayLevel_Click(object sender, RoutedEventArgs e)
{
var fileBytes = File.ReadAllBytes(_imageLocation);
grayscaleListY.Clear();
grayscaleListU.Clear();
grayscaleListV.Clear();
var sw = Stopwatch.StartNew();//for count time used
Bitmap grayScaleBitMap = new Bitmap(_imageLocation);
for (int x = 0; x < grayScaleBitMap.Width; x++)
{
for (int y = 0; y < grayScaleBitMap.Height; y++)
{
System.Drawing.Color pixelColor = grayScaleBitMap.GetPixel(x, y);
int grayscaleY = (int)(ColorSpaceConversion.RgbToY(pixelColor.R, pixelColor.G, pixelColor.B));//convert color to gray
int grayscaleU = (int)(ColorSpaceConversion.RgbToU(pixelColor.R, pixelColor.G, pixelColor.B));
int grayscaleV = (int)(ColorSpaceConversion.RgbToV(pixelColor.R, pixelColor.G, pixelColor.B));
grayscaleListY.Add(grayscaleY);
grayscaleListU.Add(grayscaleU);
grayscaleListV.Add(grayscaleV);
System.Drawing.Color newColor = System.Drawing.Color.FromArgb(pixelColor.A, grayscaleY, grayscaleY, grayscaleY);
grayScaleBitMap.SetPixel(x, y, newColor);
}
}
BitmapToImageSource(GrayScaleImage, grayScaleBitMap); //render gray image
sw.Stop();
grayScaleBitMap.Save(AppDomain.CurrentDomain.BaseDirectory + "grayScaleImage.jpg");//save to LBSWatermarkingWithUI/bin/debug
EmbedTime.Text = String.Format("{0}ms", sw.ElapsedMilliseconds);
}