3D Models and Background Accordance

3D Models and Background Accordance

Adding 3D model to some existing background may cause problems.

Despite the some tolerances that human view system allows as perspective invariants in images perception, the mismatch of perspective properties of separate objects joint in one view can be very irritated. And vice versa – correctly set camera parameters, placement the 3D model and background projection plane produce “Just like a real thing” views.

In many cases when co planarity, perpendicularity and some similar a prior information for 3D model and background is known, usage the vanishing points, horizontal, vertical lines and the other well known perspective attributes are enough for obtaining acceptable results.

But what happens when such information is unavailable?

I believe that I found the answer in general. By using epipolar geometry and only 6 points in general position I can exactly joint the 3D object to background projection. The algorithm is simple /no fundamental matrix calculation, no homogenous equation system!/

Soon the algorithm will be available as AutoCAD plug in. There is one preliminary result:

The original picture from Stallion 51 Flight Operations

One more P-51 D added in the hangar

Just like a real thing! Enjoy.