Ordering 2d/3d object behind other element

Question

As you can see in the link, I have two elements: first is image element which is taken from camera (using EmguCV) and the other one is viewport3d which renders 3d object. I also include 2d object (see the rectangle).

When I run my program I see this.

Yes indeed, the object (hand) will be ordered in front of the image.

The question is how to order 2d/3d object behind the hand object? Is it possible to do it using single camera? Just like this one.

Thanks in advance for your answers.

Answer 1

There are two ways of doing it.

1. Use kinect depth map to find the distance of hand from camera.
2. Do image processing to detect hand and it's distance.

I think it will be difficult to directly blend WPF UI with camera image. Try RenderTargetBitmap http://msdn.microsoft.com/en-us/library/system.windows.media.imaging.rendertargetbitmap.aspx