I was wondering if anyone has ever done any perspective correction using POV-Ray
/ SDL.

Something like taking a photograph of a piece of paper at a non-perpendicular
angle, and then applying some sort of matrix transform to the resulting image in
order to get a perspective-corrected result.

I often use photos and diagrams to guide creation of things by CSG, and things
can get to be quite "off".

I was also wondering if some sort of system could be designed to use POV-Ray to
use data points in an image of say, a room, to construct a basic 3D
representation of the room.

I know there are architectural and remodeling apps that can do this, 3D objects
can be seamlessly inserted into legacy photos and video, and IIRC someone had
experimented a while back with using a POV-Ray to identify the location of an
object in the scene using the screen coordinates.

Has anyone thought about any of this?

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