POV-Ray : Newsgroups : povray.advanced-users : Converting 2D screen coordinates to 3D : Re: Converting 2D screen coordinates to 3D Server Time
26 Mar 2023 05:28:51 EDT (-0400)
  Re: Converting 2D screen coordinates to 3D  
From: Bald Eagle
Date: 9 Feb 2023 06:55:00
Message: <web.63e4de39ef540dd71f9dae3025979125@news.povray.org>
Now, following along with that whole thing, doing the Norbert Kern thing would
function as a check on the whole photogrammetry process.

If we made a nice, simple test scene with well-defined, easily visible reference
points, and known 3D locations, then every step of the photogrammetry
back-projection - the undoing of the projection matrix that make the image,
would be able to be matched up with planes and rays and vectors and points -
like checking the manual solution to a math problem with a calculator.

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