POV-Ray : Newsgroups : povray.unofficial.patches : MLPov, HDRI and caustics Server Time
1 Jul 2024 05:34:10 EDT (-0400)
  MLPov, HDRI and caustics (Message 1 to 2 of 2)  
From: George Pantazopoulos
Subject: MLPov, HDRI and caustics
Date: 15 Jan 2003 08:52:40
Message: <3e2567a8@news.povray.org>
I was just looking at some icicles shining in the sunlight today, and I
wonderedif allowing a HDRI image to shoot photons would produce some
interesting results. Having the whole map shoot photons probably wont look
good, but what about allowing only the very brightest parts of the HDRI map
to shoot photons? (set by some threshold)

George


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From: Daniel Matthews
Subject: Re: MLPov, HDRI and caustics
Date: 15 Jan 2003 16:40:28
Message: <1660835.MWMPGWcqSA@3-e.net>
George Pantazopoulos wrote:

> 
>     I was just looking at some icicles shining in the sunlight today, and
>     I
> wonderedif allowing a HDRI image to shoot photons would produce some
> interesting results. Having the whole map shoot photons probably wont look
> good, but what about allowing only the very brightest parts of the HDRI
> map to shoot photons? (set by some threshold)

Or even better a spline based curve that determines the probability of a
given pixel value generating a photon.
(like the "curves" tool in image processing programs.)

-- 
Your connection failed because: Out of cards on drive D:


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