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Christoph Hormann <chr### [at] gmx de> wrote:
: Nice, just the large sphere looks somewhat unnatural, how about making it
: of glass?
Like this?
(It seems that photons coming from the area light and reflecting from the
sphere make funny patterns on the wall... Any idea how to smooth that out?
And no, I have no idea why the light source is not oversaturated anymore;
I didn't do anything to it; I have the feeling that POV-Ray still has some
problems of radiosity being different from render to render...)
Post a reply to this message
Attachments:
Download 'radtest2.jpg' (43 KB)
Preview of image 'radtest2.jpg'
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Yummy! Source code, please! :)
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Kari Kivisalo wrote:
> You just described a scene where dynamic range compression
> should perform well. Another way is to design the lighting
> to limited contrast ratio.
Is there still no other program than full version of Photoshop that can
do it? If so, is the algorithm how difficult or un-known or patented? If
the algorithm is available somewhere, it shouldn't be very difficult to
write a little app to do that compression.
--
/"\ | iki.
\ / ASCII Ribbon Campaign | fi/
X Against HTML Mail | zds
/ \
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Jari Juslin wrote:
> If the algorithm is available somewhere, it shouldn't
> be very difficult to write a little app to do that compression.
All that is required is interactive transfer curve editor
for 48 bit images with real time gamma correction. That's
the whole "algorithm". There are some more features that
would make it more user friendly, the most important being
optional log-log display of the curve.
_____________
Kari Kivisalo
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Warp wrote:
>
> But as you see, I solved the problem without needing to recurr to any
> post-processing.
While solving this one you introduced another problem.
It's not realistic anymore :)
_____________
Kari Kivisalo
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Warp wrote:
> I have the feeling that POV-Ray still has some
> problems of radiosity being different from render to render...)
I have never noticed this but there still seems to be some
problems with scale and directional bias.
_____________
Kari Kivisalo
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Kari Kivisalo <ray### [at] engineercom> wrote:
: While solving this one you introduced another problem.
: It's not realistic anymore :)
Isn't that quite subjective?
What makes it so unrealistic in your opinion?
--
#macro N(D,I)#if(I<6)cylinder{M()#local D[I]=div(D[I],104);M().5,2pigment{
rgb M()}}N(D,(D[I]>99?I:I+1))#end#end#macro M()<mod(D[I],13)-6,mod(div(D[I
],13),8)-3,10>#end blob{N(array[6]{11117333955,
7382340,3358,3900569407,970,4254934330},0)}// - Warp -
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Warp wrote:
>
> What makes it so unrealistic in your opinion?
I ment it's not a simulation anymore when parameters
are bent at will. The image can _look_ realistic even
if it's not a realistic simulation :)
_____________
Kari Kivisalo
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Rune wrote:
>
> You made a good-looking and convincing workaround, but in cases where
> complete realism is vital, such a workaround is not good enough I think.
I believe Gilles too has employed this trick with great success.
You know, as long as the image looks good...
_____________
Kari Kivisalo
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"Jari Juslin" <zds### [at] ikifi> wrote in message news:3BC788B5.5A8A0B70@iki.fi...
> Kari Kivisalo wrote:
> > You just described a scene where dynamic range compression
> > should perform well. Another way is to design the lighting
> > to limited contrast ratio.
>
> Is there still no other program than full version of Photoshop that can
> do it? If so, is the algorithm how difficult or un-known or patented? If
> the algorithm is available somewhere, it shouldn't be very difficult to
> write a little app to do that compression.
>
I'm not sure if I understand you correctly. Corel PhotoPaint is free for Linux
from corel.com...
- Nekar
---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.282 / Virus Database: 150 - Release Date: 2001/09/25
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