Hi,
I am trying to simulate digital camera system in software. I understand that
the Radiance uses pinhole camera model to render a 3D scene. Is it possible to
integrate a lens system before rendering? Or any ideas how to go about it?
Regards,
Randhir
Hi Randhir,
You should read the 1995 SIGGRAPH paper by Craig Kolb, Don Mitchell and Pat Hanrahan, "A Realistic Camera Model for Computer Graphics," which you may find at the following URL:
http://graphics.stanford.edu/papers/camera/gamma-corrected/
Radiance's inherent camera model is indeed a pinhole, though there are methods available for simulating depth-of-field using a synthetic aperture. Vignetting, coating effects, etc. are all beyond what Radiance was designed to simulate in it's camera model. You could model the lens system and camera geometry in Radiance directly, I suppose, but it would be a lot of work. Calculating an image this way would be quite expensive, but I think it's possible.
Have you considered using a more general optics simulation package, such as TracePro?
http://www.lambdares.com/products/tracepro/
-Greg
From: Randhir Kumar Singh <[email protected]>
Date: March 9, 2005 3:37:38 AM PSTHi,
I am trying to simulate digital camera system in software. I understand that
the Radiance uses pinhole camera model to render a 3D scene. Is it possible to
integrate a lens system before rendering? Or any ideas how to go about it?Regards,
Randhir