How to create Bitmap from System.Window.media.PixelFormats.Gray16

Question

Hi, I am successfully drawn images from their raw pixel data.(only 8 bit images). here is the code for doing the same thing.

     PixelFormat format = PixelFormat.Format8bppIndexed;
     Bitmap bmp = new Bitmap(Img_Width, Img_Height, format);
     Rectangle rect = new Rectangle(0, 0, Img_Width, Img_Height);
     BitmapData bmpData = bmp.LockBits(rect, ImageLockMode.ReadWrite, format);
     Marshal.Copy(rawPixel, 0, bmpData.Scan0, rawPixel.Length);
     bmp.UnlockBits(bmpData);

Now as you all know PixelFormat.format16bppGrayscale is not supported by c# 2.0 GDI+. I googled and got 3.0/3.5 framework support this. So i installed both. The class which is support is System.windows.media.PixelFormats. PixelFormats.Gray16

Now my problem is how to create a bitmap and get a image for display by passing this parameter.

i got something BitmapSource class there but i am very new in C#3.0.

Please help me.

Answer 1

Try this:

private static Bitmap changePixelFormat(Bitmap input, PixelFormat format)
{
    Bitmap retval=new Bitmap(input.Width, input.Height, format);
    retval.SetResolution(input.HorizontalResolution, input.VerticalResolution);
    Graphics g = Graphics.FromImage(retval);
    g.DrawImage(input, 0, 0);
    g.Dispose();
    return retval;
}

Answer 2

Take a look at the Greyscale filters in AForge.net. You can find source here.

EDIT:

As a note on that source I linked, it is using an 'old' version of AForge.NET, but the concepts are the same.