public Image ProcessImage(ImageFactory factory)
{
Bitmap newImage = null;
Image image = factory.Image;
int parameter = DynamicParameter;
if (parameter > 100 || parameter < 0)
{
throw new ArgumentOutOfRangeException();
}
var bitMap = new Bitmap(image);
try
{
using (Graphics graphics = Graphics.FromImage(image))
{
using (ImageAttributes attributes = new ImageAttributes())
{
unsafe
{
BitmapData bitmapData = bitMap.LockBits(new Rectangle(0, 0, bitMap.Width, bitMap.Height), ImageLockMode.ReadWrite, bitMap.PixelFormat);
int bytesPerPixel = System.Drawing.Bitmap.GetPixelFormatSize(bitMap.PixelFormat) / 8;
int heightInPixels = bitmapData.Height;
int widthInBytes = bitmapData.Width * bytesPerPixel;
byte *PtrFirstPixel = (byte *)bitmapData.Scan0;
Parallel.For(0, heightInPixels, y =>
{
byte *currentLine = PtrFirstPixel + (y * bitmapData.Stride);
for (int x = 0; x < widthInBytes; x = x + bytesPerPixel)
{
var newPixel = PixelOperations.Threshold(Color.FromArgb(currentLine[x],
currentLine[x + 1], currentLine[x + 2]), parameter);
currentLine[x] = newPixel.R;
currentLine[x + 1] = newPixel.G;
currentLine[x + 2] = newPixel.B;
}
});
bitMap.UnlockBits(bitmapData);
image = bitMap;
}
}
}
}
catch (Exception ex)
{
newImage?.Dispose();
throw new ImageProcessingException("Error processing image with " + this.GetType().Name, ex);
}
return(image);
}
