Tim Nikias wrote:
>> I think that this image...
>> http://www.nolights.de/stills/gallery/images/prep4company.jpg
>> ..... is very beautiful and lighting is very realistic, I would like to see
>> the source pov code of this image in order to have an idea of what was
>> wrong in my image, comparing the materials, lights, radiosity,...
> 
> Sure, I'm at the university right now, but when I get back home, I'll see
> what I can do. The chair and sofa are big meshes though, so I guess I'd
> have to take those out of the scene-file and replace them with something
> simpler (low-res, probably), but you'll get the materials and lighting.

I've just uploaded the ZIP with a slightly stripped down version of the 
meshes and textures to povray.binaries.scene-files. Feel free to explore 
and experiment with the settings. :-)

Regards,
Tim

-- 
aka "Tim Nikias"
Homepage: <http://www.nolights.de>

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Hi,
This image has take too long to render because of the high resolution, I
tried to improve the definition of the objects and antialias, at the same
time, I try to add bright to the scene changing the key light with
<1,1,1>*3 and sky sphere <1,1,1>.
But, in order to reduce render time I changed the count to 300, and this has
produced blotchy surfaces.
The question is: It's possible to solve this problem without a count higher
than 300 (to don't increase render time)? Changing the rest of the
parameters of radiosity? (rest are default values in this image)
Thks,

JSR

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Attachments:
Download 'indoor.jpg' (323 KB)

Preview of image 'indoor.jpg'

"JSR" <jsr### [at] gmailcom> wrote:
> But, in order to reduce render time I changed the count to 300, and this has
> produced blotchy surfaces.
> The question is: It's possible to solve this problem without a count higher
> than 300 (to don't increase render time)? Changing the rest of the
> parameters of radiosity? (rest are default values in this image)

Reduce pretrace_end to 0.01 or 0.005.  That tends to mitigate the
splotchiness caused by the low error_bound.

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"JSR" <jsr### [at] gmailcom> wrote in message
news:web.453f8a843cae5eb8d8ef73430@news.povray.org...
> Hi,
> This image has take too long to render because of the high resolution, I
> tried to improve the definition of the objects and antialias, at the same
> time, I try to add bright to the scene changing the key light with
> <1,1,1>*3 and sky sphere <1,1,1>.
> But, in order to reduce render time I changed the count to 300, and this
has
> produced blotchy surfaces.
> The question is: It's possible to solve this problem without a count
higher
> than 300 (to don't increase render time)? Changing the rest of the
> parameters of radiosity? (rest are default values in this image)
> Thks,
>
> JSR

just another quick thought. a room painted grey will always look gray, no
matter how nice the sunlight is coming in. find some nice paint samples and
borrow their colors :)

the room does look brighter now, anyway.

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JSR nous apporta ses lumieres en ce 25/10/2006 12:02:
> Hi,
> This image has take too long to render because of the high resolution, I
> tried to improve the definition of the objects and antialias, at the same
> time, I try to add bright to the scene changing the key light with
> <1,1,1>*3 and sky sphere <1,1,1>.
> But, in order to reduce render time I changed the count to 300, and this has
> produced blotchy surfaces.
> The question is: It's possible to solve this problem without a count higher
> than 300 (to don't increase render time)? Changing the rest of the
> parameters of radiosity? (rest are default values in this image)
> Thks,
> 
> JSR
> 
> 
> ------------------------------------------------------------------------
> 
A low error_bound needs a high count to prevent blotchness. Try to increase 
error_bound, maybe as high as 1. This will also decrease the render time.
You can compensate by using a smaller low_error_factor to get more sampling 
during the last pretrace step. Also, adding 1 or pretrace steps can help.
Increasing nearest_count up to 20 (the maximum) can also help by averaging more 
value to get the final illumination.

-- 
Alain
-------------------------------------------------
WARNING: The consumption of alcohol is a major factor in dancing like a retard.

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"JSR" <jsr### [at] gmailcom> wrote:
> Hello,
> I'm new to this newsgroup. I'm very interested in learning indoor lighting
> and rendering using lights and radiosity. I have been working with POV for
> a long, but I can't render images with impressive lighting like these:
> http://www.pacificommultimedia.com/architecture.html
> http://www.artvps.com/gallery/1/architecture.htm
>
> At the moment, the best image I rendered is this. I think that it is not
> very bad, but seems a little dark. If the brightness parameter is
> incremented then the image is burn.
> Suggestions are well received.
> Thanks,
>
> jsr.

Nice room!  One thing I noticed... the shadows are only possible with a
single point of light.  But a window is not a single point.  Rendering the
shadows correctly is very difficult (difficult on the computer).

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