Let me try to explain how 3D works ,
As you know 3D stereo cameras work on angle difference principal. There are two lenses and two pictures , you load them to pc and get the 3D print file. Than you look to the print with a google.
At cinema , there is the same principle , there are countless photographs stream on screen.
Some movie episodes are special , for example , you can put your camera on to a tripod , and an automobile cross in front of camera. Camera records many frames with many angles . If you compute with these different angled frames , you get the 3D file.
Slit scan camera is using this principle.
Best ,
Mustafa Umut Sarac
Istanbul