Download 3D Visualization using virtual view generation for stereoscopic

3.2. DIFFERENT 3D DEVICES
33
in the Background Information Chapter, its final expression in 2.10. X and Y should
be isolated in the equation, where the known variables are x, y and Z (previously
calculated).



x


 y =P


1

X
X



 Y 


·

 Z 


1
(3.2)





x
 Y 






 = P −1 · 
y


 Z 


1
1
(3.3)
Recapturing the Image: 3D to 2D
Once the reference camera image points have been projected onto the 3D scene, the
projection algorithm is done to recapture the image in the virtual camera’s image plane.
Now equation 3.2 can be used straight. Then, with the new coordinates for each point,
the pixel values from the original image can be copied into the virtual camera’s image
plane.
The virtual view can therefore be created.
3.2
Different 3D Devices
First of all, a complete 3D experience is not possible without a special Stereo-3D software
and hardware. There are two basic types; still, the goal is the same for both: guarantee
that the eyes get the images from the projector, differently for each one, and combine
them creating the stereoscopic effect: