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3f20165c@news.povray.org...
> I made some renderings of planet earth; color & topography.
> Medium-resolution images at:
>
> http://www.cip.physik.uni-muenchen.de/~wwieser/render/img/earth/
>
> I'll make some high-res images but first would like to get some
> comments.
Beautiful images. The exagerated heights add a nice touch
(surrealistic?). The image from Mars is the one I like most.
Seems like a planet from the little prince.
Keep on working on it.
Bye
Txemi Jendrix
http://www.txemijendrix.com
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Hey Wolfgang!
Great Images! Are we going to see some of the other planets, too?
> But Mars has more extreme topography.
Could you give us some figures, like deepest valley/highest peak?
Florian
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Nice work Wolfgang
I like the exagerated topography :)
Just 3 things:
Animation, Animation, Animation :)
(If at all possible)
Dave.
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Wolfgang Wieser wrote:
>
> [...]
> Topo is 1/60 degree, hence 21600 x 10800 pixels, i.e. 222 mega-pixels.
> Thus, I need 444 Mb of height data (it's 2 byte).
> Adding 1/30 degree RGB color, 10800 x 5400 x 3 = 167 Mb
> Together, that's 611 Mb.
> POVRay actually uses 620 Mb VM (according to the kernel).
All right, my quick estimate was a bit high. I remembered that the data
of my renders i posted the link for would have taken more than 3 Gb as a
whole but i use 1 km resolution for both the topography and the coloring
(and clouds in some cases).
> > I'd strongly reduce the height exaggeration (with 2 km grid 5x-10x should
> > give quite pleasant results)
> >
> Hmm... Maybe I'll give it a try.
> My Mars images use height exaggeration of 10. But Mars has more
> extreme topography.
>
> http://www.cip.physik.uni-muenchen.de/~wwieser/render/img/mars/
> (Take the 2048x1536 JPEG to see the craters.)
I did mars as well:
news://news.povray.org/3EC752E4.FCFDBF5D%40gmx.de
http://news.povray.org/povray.binaries.images/31675/225014/#225014
This is without exaggeration of height (but again twice the resolution for
the topography).
Christoph
--
POV-Ray tutorials, include files, Sim-POV,
HCR-Edit and more: http://www.tu-bs.de/~y0013390/
Last updated 17 Jun. 2003 _____./\/^>_*_<^\/\.______
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> Animation, Animation, Animation :)
>
My next plan. Probably in a month or so...
It'll render forever, though.
Wolfgang
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Florian Brucker wrote:
> Hey Wolfgang!
>
> Great Images! Are we going to see some of the other planets, too?
>
Probably not. At least not likely in the next 3 months.
>> But Mars has more extreme topography.
> Could you give us some figures, like deepest valley/highest peak?
>
The large volvano is Olympus Mons -- said to be the highest volcano in
the solar system: it is 24km high and measures 550km across.
The large canyon system is called Vallis Marineris: it extends
over 4000km and is up to 7km deep.
(Copy&paste from my homepage ;)
Wolfgang
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Christoph Hormann wrote:
> I did mars as well:
>
> news://news.povray.org/3EC752E4.FCFDBF5D%40gmx.de
> http://news.povray.org/povray.binaries.images/31675/225014/#225014
>
Nice images.
Seems you found a color map of Mars somewhere...
> This is without exaggeration of height (but again twice the resolution for
> the topography).
>
IIRC, the 1/128 degree data did not include the poles at that time,
to I decided to use the 1/64 degree data.
Wolfgang
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Wolfgang Wieser wrote:
>
> > news://news.povray.org/3EC752E4.FCFDBF5D%40gmx.de
> > http://news.povray.org/povray.binaries.images/31675/225014/#225014
> >
> Nice images.
> Seems you found a color map of Mars somewhere...
It is very low resolution and includes shading which is difficult to
remove. You can find this at various places, for example:
http://www.solarviews.com/cap/mars/marscyl1.htm
> IIRC, the 1/128 degree data did not include the poles at that time,
> to I decided to use the 1/64 degree data.
It only goes to 88 degrees but that's no reason not to use it (just fill
the rest with lower resolution).
There are some slight scanning structures in the data though (only visible
in extreme situations of course).
Christoph
--
POV-Ray tutorials, include files, Sim-POV,
HCR-Edit and more: http://www.tu-bs.de/~y0013390/
Last updated 17 Jun. 2003 _____./\/^>_*_<^\/\.______
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I am waiting with bated breath :)
It would be nice too if say a third of the earth was in shadow so you see
the topology coming into view as it breaks through the terminator.
Dave
"Wolfgang Wieser" <wwi### [at] gmx de> wrote in message
news:3f20f340@news.povray.org...
> > Animation, Animation, Animation :)
> >
> My next plan. Probably in a month or so...
> It'll render forever, though.
>
> Wolfgang
>
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Christoph Hormann wrote:
> It is very low resolution and includes shading which is difficult to
> remove. You can find this at various places, for example:
>
> http://www.solarviews.com/cap/mars/marscyl1.htm
>
I never tried to use real color of Mars so far but thought I
could search for a color map today.
Unfortunately, the results were frustrating.
It seems, there used to be a nice texture map on the net because
I stepped over the following:
Quote from: http://www.cherba.com/wcs/tutorials/vns/mola/
>The nice folks at NASA have made it easy to texture Mars. You'll find
>the 7.4 Mb color.jpg in the same directory as the rest of the MOLA data.
Unfornunately, the link is dead and half an hour searching the net
did not reveal it...
Wolfgang
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