Question about radiosity rendering

Question about radiosity rendering

Post by Neil » Sat, 15 Nov 2003 03:35:52


Dear All,

I hope somebody might be able to offer some advice
with regard to a recent radiosity-rendered image I am
currently working on, which can be viewed at:

http://www. *** network.org/wip/c4d/radiosity-1.jpg

The scene itself contains a single distance light
with a brightness setting of around 70-80 percent.
I'm not sure whether it's an artefact of the general
radiosity process itself but certain elements of
the scene (such as underneath the heater, seats,
and on the east facing wall) appear over-lit even
though none are directly lit by the light. Does
this have anything to do with the diffusion depth
settings? The only possible explanation I can think
of is that the light must be bouncing back and forth
between the closely situated surfaces, which
results in the scene looking even more unrealistic
than it may already look. Alternatively, maybe
the high strength setting is over-cooking things...

Anyway, your assistance would be much appreciated,
as well as any other general comments on the image
itself, disparaging or not! :)

MTIA,

Neil
 
 
 

Question about radiosity rendering

Post by stefke » Sat, 15 Nov 2003 18:41:33

You have 450% strength. This means that the bounces will turn brighter &
brighter and if there is any light-emitting surface (like a sky) it also
emits more light.

Can you post the scene (or a small part of it) to test?

--- stefkeB ---

 
 
 

Question about radiosity rendering

Post by Bob » Wed, 19 Nov 2003 17:23:07

Actually I found it very interesting! As a novice, reading about other
people's challenges and solutions is very educational.

So bore us please!

-Bob
 
 
 

Question about radiosity rendering

Post by Neil » Thu, 20 Nov 2003 06:34:25

Dear All,

Having played around with the settings the
problem seems to be a combination of the
high strength setting (for what is a
relatively weak light) and the diffusion
depth - lowering the value to 5 (from 6)
was a big improvement itself even before
adjusting the light or strength settings.

Thank you stefkeB for your help - I won't
bore the rest of you with my badly organised
room scene files :)

Neil