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Hi all,
another isosurface landscape. I've tried to incorporate comments made about
my last landscape. There has been a lot more work done on the lighting and
image contrast, however I still needed to correct the image levels in
photoshop. There were also some minor touchups done. This render did not use
radiosity but the multiple lights, sky sphere, method with a combination of
shadow and non shadow casting light sources with attenuation.
There texture is still a simple slope texture but the colours are much more
monochromatic. This isosurface is also a lot more complex than the previous
one used. There are 684 indiviudal isosurface blocks. Each one optimised for
their container, gradient and accuracy. I've finished writing a batch
process, using INI files and a Perl script, to multi pass render each
individual isosurface to calculate the optimum gradient and container size.
This takes a little time but it runs complete overnight and it only has to
be done the once for any scene.
This image took 8 hrs, 17min to render.
Post a reply to this message
Attachments:
Download 'land5.jpg' (175 KB)
Preview of image 'land5.jpg'
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"Nathan O'Brien" <no1### [at] no13 net> wrote in
news:3f7a93c6@news.povray.org:
> Hi all,
>
> another isosurface landscape. I've tried to incorporate
> comments made about my last landscape. There has been a lot
> more work done on the lighting and image contrast, however
> I still needed to correct the image levels in photoshop.
> There were also some minor touchups done. This render did
> not use radiosity but the multiple lights, sky sphere,
> method with a combination of shadow and non shadow casting
> light sources with attenuation.
>
> There texture is still a simple slope texture but the
> colours are much more monochromatic. This isosurface is
> also a lot more complex than the previous one used. There
> are 684 indiviudal isosurface blocks. Each one optimised
> for their container, gradient and accuracy. I've finished
> writing a batch process, using INI files and a Perl script,
> to multi pass render each individual isosurface to
> calculate the optimum gradient and container size. This
> takes a little time but it runs complete overnight and it
> only has to be done the once for any scene.
>
> This image took 8 hrs, 17min to render.
I'm impresed!
--
Marc Champagne
marcch.AT.videotron.DOT.ca
Montreal, Canada
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Nice image. Horizontal, wind-blown erosion patterns... slope-dependent
texture. That dust color looks too intense though..... it seems too
orange. I am a little color-blind so I might just be seeing it strangely.
Eight hours seems like a long time for this render. How fast is the
computer this was rendered on?
--
Samuel Benge
stb### [at] hotmailcom
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"Samuel Benge" <sbe### [at] hotmailcom> wrote in message
news:3F7### [at] hotmailcom...
> Nice image. Horizontal, wind-blown erosion patterns...
slope-dependent
> texture. That dust color looks too intense though..... it seems too
> orange. I am a little color-blind so I might just be seeing it
strangely.
No, that orange colour is what you see (I'm colour-blind). To me,
it's flat. Take that middle mountain in the background, it's pretty
good but needs a little more attention. I think some scaling of
textures is needed here for the mountain on the right-hand side. The
other mountains look very good to me though.
~Steve~
> Samuel Benge
>
> stb### [at] hotmailcom
>
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Yes the orange is deffinately too intense... and I'm not color-blind...
(depends on what your definition of color-blind is though).
Other than that its an impressive bit of work!..
Almost makes me think that it should be an underwater scene. A few fish and
some really weird looking sea creatures and it would be wonderful.
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Neonux wrote:
>Yes the orange is deffinately too intense... and I'm not color-blind...
>(depends on what your definition of color-blind is though).
The whole scene used the same pigment with no finish or normal components.
pigment {
slope {<0,-1,0>, 0, .5}
color_map {
[0.0 rgb <.8,.75,.55>]
[0.2 rgb <.8,.65,.3>]
[0.6 rgb <.8,.65,.3>]
[0.7 rgb <.8,.45,.1>]
[1.0 rgb <.8,.45,.1>]
}
}
I chose the strong orange as a contrast test against a blue sky. This also
helped me assess the detail level in the shadow zones. Next time I render
the scene I will be using much more complex textures and more realistic
colours. I'll probably take a colour map direct from some photographs I
have of Wadi Rum in Jordan.
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Samuel Benge wrote:
>Eight hours seems like a long time for this render. How fast is the
>computer this was rendered on?
>
It was rendered on a P4. The entire atmosphere is created using just media
(no sky sphere or the like) and there were 32 lightsources providing
ambient level lighting in addition to the main light source, + a complex
isosurface, + aa.
I've completed tests using a combination of height fields and sky spheres
that render much faster however the isosurface provides a much richer
landscape form and the media atmosphere provides better interaction with
clouds and light decay at low angles.
Post a reply to this message
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Nathan O'Brien wrote:
> Hi all,
>
> another isosurface landscape. I've tried to incorporate comments made about
> my last landscape. There has been a lot more work done on the lighting and
> image contrast, however I still needed to correct the image levels in
> photoshop. There were also some minor touchups done. This render did not use
> radiosity but the multiple lights, sky sphere, method with a combination of
> shadow and non shadow casting light sources with attenuation.
>
> There texture is still a simple slope texture but the colours are much more
> monochromatic. This isosurface is also a lot more complex than the previous
> one used. There are 684 indiviudal isosurface blocks. Each one optimised for
> their container, gradient and accuracy. I've finished writing a batch
> process, using INI files and a Perl script, to multi pass render each
> individual isosurface to calculate the optimum gradient and container size.
> This takes a little time but it runs complete overnight and it only has to
> be done the once for any scene.
>
> This image took 8 hrs, 17min to render.
A very impressive image. I found the atmosphere, haze, and ighting to
be very convincing, some of the best I've seen. The texture is realy
the ony thing that looks off. Good job.
-Ben
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I like it! I like it!
The solid areas of orange are a bit overwhelming, though.
Rohan _e_ii
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