public IEditableImage ToMonochrome()
{
Bitmap bmpMonochrome = Bitmap.CreateBitmap(_image.Width, _image.Height, Bitmap.Config.Rgb565);
Canvas canvas = new Canvas(bmpMonochrome);
ColorMatrix ma = new ColorMatrix();
ma.SetSaturation(0);
Paint paint = new Paint();
paint.SetColorFilter(new ColorMatrixColorFilter(ma));
canvas.DrawBitmap(_image, 0, 0, paint);
_image.Recycle();
_image.Dispose();
_image = bmpMonochrome;
bmpMonochrome = null;
canvas.Dispose();
ma.Dispose();
paint.Dispose();
return(this);
}
