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Greetings,
Another landscape. Clouds are scattering media type 3 used in MegaPOV
(if you're reading this Nathan, thanks much for your media work!).
Terrain was generated in HF-lab. Since I am working from an LCD monitor,
the colors may be a bit off. Post processing note: this image here was
reduced about 75% from the original render.
Any comments appreciated, esp. in regards to atmos/cloud color, contrast
and gamma (again my monitor).
Abe
Post a reply to this message
Attachments:
Download 'mediaclouds_sm.jpg' (58 KB)
Preview of image 'mediaclouds_sm.jpg'
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Abe wrote:
>
> Greetings,
>
> Another landscape. Clouds are scattering media type 3 used in MegaPOV
> (if you're reading this Nathan, thanks much for your media work!).
> Terrain was generated in HF-lab. Since I am working from an LCD monitor,
> the colors may be a bit off. Post processing note: this image here was
> reduced about 75% from the original render.
>
> Any comments appreciated, esp. in regards to atmos/cloud color, contrast
> and gamma (again my monitor).
>
> Abe
If this is really the output from POV-Ray I can only say
"Look out Terragen !!!". This image is fantastic. I would
really like to see a higher resolution image of this and
the source if at all possible. Render stats would also
be appreciated.
On my system your output is right on the money and I wouldn't
change a thing were I you.
WoW !
Wee !
--
Ken Tyler - 1300+ Povray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/
Post a reply to this message
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I love those clouds. They must have taken a week to render, huh?
Abe wrote:
> Greetings,
>
> Another landscape. Clouds are scattering media type 3 used in MegaPOV
> (if you're reading this Nathan, thanks much for your media work!).
> Terrain was generated in HF-lab. Since I am working from an LCD monitor,
> the colors may be a bit off. Post processing note: this image here was
> reduced about 75% from the original render.
>
> Any comments appreciated, esp. in regards to atmos/cloud color, contrast
> and gamma (again my monitor).
>
> Abe
>
> ------------------------------------------------------------------------
> [Image]
--
Samuel Benge
E-Mail: STB### [at] aol com
Visit the still unfinished isosurface tutorial: http://members.aol.com/stbenge
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Yes, a little bigger, if you please.
Peter Warren
war### [at] hotmailcom
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Ouuuuuuuuuuuuuuuuuuuwwww.
If I wouldn't already have confessed to be a sucker for clouds I would do it
now.
I can't believe these beaties you've created Abe.
I would love to see the source for the clouds.
Juha Leppälä
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I'm very impressed I've got nowhere with media clouds. The HF is just right
too.
Keep up the good work
Mick
--
*************************************************************
http://www.minda.swinternet.co.uk/index.htm
*************************************************************
Juha Leppälä <juh### [at] kolumbusfi> wrote in message
news:3889ea7a@news.povray.org...
> Ouuuuuuuuuuuuuuuuuuuwwww.
> If I wouldn't already have confessed to be a sucker for clouds I would do
it
> now.
> I can't believe these beaties you've created Abe.
> I would love to see the source for the clouds.
>
> Juha Leppälä
>
>
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Let us see more. Possibly something to fit wallpaper.
I think maybe it is time to change mine. To this.
Abe wrote:
>
> Greetings,
>
> Another landscape. Clouds are scattering media type 3 used in MegaPOV
> (if you're reading this Nathan, thanks much for your media work!).
> Terrain was generated in HF-lab. Since I am working from an LCD monitor,
> the colors may be a bit off. Post processing note: this image here was
> reduced about 75% from the original render.
>
> Any comments appreciated, esp. in regards to atmos/cloud color, contrast
> and gamma (again my monitor).
>
> Abe
>
> ------------------------------------------------------------------------
> [Image]
--
Mr. Art
"Often the appearance of reality is more important
than the reality of the appearance."
Bill DeWitt 2000
Post a reply to this message
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Don't listen to everybody else, the sky and haze color is a grape color and
should probably be more blue and less red then. Okay, maybe not so much for the
haze as for the sky.
Despite my say about that, it's fantastic. I want to see more too :-D
Bob
"Abe" <bul### [at] taconicnet> wrote in message
news:3889C52D.78934067@taconic.net...
| Greetings,
|
| Another landscape. Clouds are scattering media type 3 used in MegaPOV
| (if you're reading this Nathan, thanks much for your media work!).
| Terrain was generated in HF-lab. Since I am working from an LCD monitor,
| the colors may be a bit off. Post processing note: this image here was
| reduced about 75% from the original render.
|
| Any comments appreciated, esp. in regards to atmos/cloud color, contrast
| and gamma (again my monitor).
|
| Abe
--------------------------------------------------------------------------------
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the onset of the atmospheric effect after the first hill is too sudden it
would have even more of that vast fertile world look if you softened it up a
bit now as for a big render i cant tell but here are some tips
snow on back mountains
more of a textured grass
maybe flowers sprinkled with a macro or something (but not too heavy)
go out side and look at the sky between the clouds i dunno what's wrong with
yours but something is
consider adding a few tufts of grass up front for a bit more of a depth and it
will help with composition
i may come off as hard but frankly it's damn good but don't stop
Abe wrote:
> Greetings,
>
> Another landscape. Clouds are scattering media type 3 used in MegaPOV
> (if you're reading this Nathan, thanks much for your media work!).
> Terrain was generated in HF-lab. Since I am working from an LCD monitor,
> the colors may be a bit off. Post processing note: this image here was
> reduced about 75% from the original render.
>
> Any comments appreciated, esp. in regards to atmos/cloud color, contrast
> and gamma (again my monitor).
>
> Abe
>
> ------------------------------------------------------------------------
> [Image]
Post a reply to this message
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On Sat, 22 Jan 2000 09:56:45 -0500, Abe <bul### [at] taconicnet> wrote:
>Another landscape. Clouds are scattering media type 3 used in MegaPOV
WoW!!!
One of the best computer generated landscapes I've seen in a long time! :)
--
Marc van den Dikkenberg
--
The PowerBasic Archives -- http://www.xs4all.nl/~excel/pb.html
All Basic Code Archives -- http://come.to/abcpackets
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Wow! Does it look that smooth at a larger size? Please post this larger
somewhere. It needs a singe bird up there, but I think you've got a
masterpiece here.
Abe wrote:
> Greetings,
>
> Another landscape. Clouds are scattering media type 3 used in MegaPOV
> (if you're reading this Nathan, thanks much for your media work!).
> Terrain was generated in HF-lab. Since I am working from an LCD monitor,
> the colors may be a bit off. Post processing note: this image here was
> reduced about 75% from the original render.
>
> Any comments appreciated, esp. in regards to atmos/cloud color, contrast
> and gamma (again my monitor).
>
> Abe
>
> ------------------------------------------------------------------------
> [Image]
Josh English
eng### [at] spiritonecom
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It looks quite realistic but I agree the sky needs to shift more towards a
blue.
--
Homepage: http://www.faricy.net/~davidf/
___ ______________________________
| \ |_ <dav### [at] faricynet>
|_/avid |ontaine <ICQ 55354965>
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Wowww...
These are the best POV-clouds I've seen yet.
Some statistics and/or the code would be great :)
Do you also have the problem with the clouds getting black in the distance ?
Still amazed
Bjoern
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Bjoern Jaeger wrote:
> Do you also have the problem with the clouds getting black in the distance ?
This sounds like the classical max_trace_level problem. Just increase it to 500
or whatever - that should remove the artifacts you're experiencing. (Look it up
in the docs for more info)
- Mikael.
----------------------------------------------------
Mikael Carneholm
Dep. of Computer Science and Business Administration
UCB (University College of Borås) Sweden
Personal home page:
http://www.studenter.hb.se/~arch
E-mail:
sa9### [at] idautbhbse
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In article <388A453B.C0CDC4E7@ida.utb.hb.se>, sa9### [at] idautbhbse
wrote:
> Bjoern Jaeger wrote:
>
> > Do you also have the problem with the clouds getting black in the
> > distance ?
>
> This sounds like the classical max_trace_level problem. Just increase it
> to 500
> or whatever - that should remove the artifacts you're experiencing. (Look
> it up
> in the docs for more info)
It isn't...it happens because the samples get spread out more and more
as they get farther and the angle they intersect the cloud box
increases. This can be fixed by making transparent vertical partitions
to force more intervals to be made. Of course, this also means you may
have to increase max_trace_level to get the ray past the partitions.
There is also a patch to fix the problem, which gives a keyword to
control the distance allowed between samples(or was it the maximum
distance before a new interval was started?), but I can't find anything
in the MegaPOV docs about it so it may not be included. I think it was
something like max_distance or max_interval_length. There were some
posts about it a while back, about the same subject(media clouds), and
it was created to solve the problem with media clouds. Sorry I don't
have more info on it...
--
Chris Huff
e-mail: chr### [at] yahoocom
Web page: http://chrishuff.dhs.org/
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This is a very nice image! The clouds are great and like everyone else
I'd love to see a larger version, source and statistics.
As Bob pointed out the sky is a bit dark but perhaps it's a gamma thing.
Also there have been some efforts to make a convincing sun lately and
yours is one of the better ones I've seen.
Nice work!
--
Phil
...coffee?...yes please! extra sugar,extra cream...Thank you.
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HEY!!! I've warned you people about posting photographs to this newsgroup!!!
Don't make me get nasty!!!
(IOW... WOW!!!)
Eric
---------------
"A wise and frugal government, which shall restrain men from injuring one
another, which shall leave them otherwise free to regulate their own
pursuits of industry and improvement, and shall not take from the mouth of
labor the bread it has earned. This is the sum of good government."
- Thomas Jefferson
- First inaugural address, 1801
---------------
http://www.ametro.net/~ericfree
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Greetings,
Thank you all for your response - I did not quite expect that much
appreciation!
I'm going to take a bit of a liberty here and post a general reply
without following any particular threads. Hope this does not offend any
one. Here goes...
- The source, for those interested is posted in p.b.s-f
- Render times for a 512x384 frame was about 9.5 hrs (no AA) on a 90MHz
pentium w/ 24 megs of memory. I posted a reduced version because I did
not feel at the time that the larger file size was warranted.
- I'm still trying to render a larger 640x480 version, but its taking a
while. If anyone with more CPU time and speed would like to do one with
higher quality settings, feel free!
- Some of you mentioned that the color was a bit off towards the reddish
side (esp in the blue). I've noticed this too when I view my pics on
some other monitors, particularly with Macs.
I'd also like to make a few general comments about this scene. While
it would be nice, to see it larger, this particular scene as it stands
has an effective size limit of about 640x480. Beyond that I would expect
the cloud details to become chunky, and the terrain texture too "plain"
(eg. no grass blades or rocks where one would start to expect to see
them). This is simply because I did not intend to render it at higher
resolutions. However, there are probably a few simple things that could
be adjusted to compensate, namely a higher octave value in the cloud
turbulence and/or increasing the camera angle for larger renders.
Regarding the media, the sampling parameters are just borderline and
could be adjusted for better quality on the clouds, given that longer
render times are acceptable.
Thank you again for your replies!
Abe
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I have started a 1024x576,AA 0.3 render on my
PII 400 w. 128M Ram machine. 48% done in 2h20m.
I left all settings as were as I don't know
what I am doing with the setup that you used.
The clouds still look good, but I cant see the
ground jet so who knows.
Abe wrote:
>
> Greetings,
> - I'm still trying to render a larger 640x480 version, but its taking a
> while. If anyone with more CPU time and speed would like to do one with
> higher quality settings, feel free!
>
--
Mr. Art
"Often the appearance of reality is more important
than the reality of the appearance."
Bill DeWitt 2000
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regaurding the "grape" color of the sky, I have seen this color before, and
I think it fits wonderfully in this image. It looks like heavy thunderstorm
is about to move in from the far right.
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Yes, make it bigger!! BIGGER! BIGGER! Wallpaper-Size!!
Andreas
http://www.anna-fans.com
Ken wrote:
> Abe wrote:
> >
> > Greetings,
> >
> > Another landscape. Clouds are scattering media type 3 used in MegaPOV
> > (if you're reading this Nathan, thanks much for your media work!).
> > Terrain was generated in HF-lab. Since I am working from an LCD monitor,
> > the colors may be a bit off. Post processing note: this image here was
> > reduced about 75% from the original render.
> >
> > Any comments appreciated, esp. in regards to atmos/cloud color, contrast
> > and gamma (again my monitor).
> >
> > Abe
>
> If this is really the output from POV-Ray I can only say
> "Look out Terragen !!!". This image is fantastic. I would
> really like to see a higher resolution image of this and
> the source if at all possible. Render stats would also
> be appreciated.
>
> On my system your output is right on the money and I wouldn't
> change a thing were I you.
>
> WoW !
>
> Wee !
>
> --
> Ken Tyler - 1300+ Povray, Graphics, 3D Rendering, and Raytracing Links:
> http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/
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WoW And WoW Again... I too tend to feel that the sky color and atmosphere fit
quite well in this scene... on my mac... it looks great... excellent work...
would love you to post more...
Ross Litscher wrote:
> regaurding the "grape" color of the sky, I have seen this color before, and
> I think it fits wonderfully in this image. It looks like heavy thunderstorm
> is about to move in from the far right.
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3h 54m
"mr.art" wrote:
>
> I have started a 1024x576,AA 0.3 render on my
> PII 400 w. 128M Ram machine. 48% done in 2h20m.
>
> I left all settings as were as I don't know
> what I am doing with the setup that you used.
>
> The clouds still look good, but I cant see the
> ground jet so who knows.
>
--
Mr. Art
"Often the appearance of reality is more important
than the reality of the appearance."
Bill DeWitt 2000
Post a reply to this message
Attachments:
Download 'mtn_clouds.jpg' (61 KB)
Preview of image 'mtn_clouds.jpg'
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In article <388B60EA.9FB0DB93@gci.net>, "mr.art" <mr.### [at] gcinet>
wrote:
This is beautiful! It looks great, especially at this resolution.
The sky looks perfect, even with the purplish tint. The brightness is
just right, it doesn't need any gamma correction on my Mac. The horizon
looks good, I like the way it gets hazy in the distance.
The ground looks like it is covered with some kind of low growing plant,
it doesn't really look grassy. Maybe if you sprinkled a couple clumps of
grass here and there, and some boulders...but I would be afraid to ruin
the effect of the picture.
I am going to try this as a desktop picture.
--
Chris Huff
e-mail: chr### [at] yahoocom
Web page: http://chrishuff.dhs.org/
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"mr.art" <mr.### [at] gcinet> wrote in message news:388B60EA.9FB0DB93@gci.net...
> 3h 54m
>
Is is just my monitor or is there a lot of banding that reminds me of
that layered cloud method?
>
> "Often the appearance of reality is more important
> than the reality of the appearance."
> Bill DeWitt 2000
BTW, I'm glad you liked this little quote but I didn't make up the
concept. I heard something extremely similar and took it as my personal
motto with a slight change in the wording. If there is someone out there
who -did- make this up and you want to claim credit that is OK with me.
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On Sun, 23 Jan 2000 11:13:30 -0900 "mr.art" <mr.### [at] gcinet> wrote:
>3h 54m
Oh, gosh - it's *still* beautiful at even this higher resolution!
Thanks, Abe and Mr. Art.
--
Alan - ako### [at] povrayorg - a k o n g <at> p o v r a y <dot> o r g
http://www.povray.org - Home of the Persistence of Vision Ray Tracer
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There seems to be banding on my monitor also, but
I think it comes from the cloud method and not
the monitor.
Bill DeWitt wrote:
> Is is just my monitor or is there a lot of banding that reminds me of
> that layered cloud method?
>
--
Mr. Art
"Often the appearance of reality is more important
than the reality of the appearance."
Bill DeWitt 2000
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Looking at it further it appears to be rows of cloudbanks. Maybe a ripples
texture in the media?
"mr.art" <mr.### [at] gcinet> wrote in message news:388### [at] gcinet...
> There seems to be banding on my monitor also, but
> I think it comes from the cloud method and not
> the monitor.
>
> Bill DeWitt wrote:
>
> > Is is just my monitor or is there a lot of banding that reminds me
of
> > that layered cloud method?
> >
>
> --
> Mr. Art
>
> "Often the appearance of reality is more important
> than the reality of the appearance."
> Bill DeWitt 2000
Post a reply to this message
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Wow,
Quite an enthusiastic response to your beautiful image.
There does seem to be a quest for the Holy Grail of Clouds.
Thank you for the posting of the source, as well as mr. art's
prompt rendering.
It is obvious from your reply that you realize any limitation
of your work better than most.
Other than the banding in the middle level range of clouds
I can not see many problems.
For me the strongest aspect of this image is the representation
of the sun.
It almost hurts my eyes to look at it, but still I cannot turn away.
Good luck in further efforts!
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Chris Huff wrote:
>
> There is also a patch to fix the problem, which gives a keyword to
> control the distance allowed between samples(or was it the maximum
> distance before a new interval was started?), but I can't find anything
> in the MegaPOV docs about it so it may not be included. I think it was
> something like max_distance or max_interval_length. There were some
> posts about it a while back, about the same subject(media clouds), and
> it was created to solve the problem with media clouds. Sorry I don't
> have more info on it...
>
It's not included in the megapov yet (so many things to do,
so little time...) It adds a sample_spacing keyword which
specifies the max distance allowed between two samples
(provided you don't go over the max samples).
If you're interrested, the source patch for uvpov6.2 is at
http://www.enst.fr/~jberger/sources/mpov.tgz
If enough people ask me, I'll try harder to make time to
include it with megapov...
Jerome
--
******************************* Jérôme M. BERGER
* Doctor Jekyll had something * mailto:ber### [at] inamecom
* to Hyde... * http://www.enst.fr/~jberger
*******************************
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Abe wrote:
> - The source, for those interested is posted in p.b.s-f
Thank you for sharing this with us.
--
Ken Tyler - 1300+ Povray, Graphics, 3D Rendering, and Raytracing Links:
http://home.pacbell.net/tylereng/index.html http://www.povray.org/links/
Post a reply to this message
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Bill DeWitt wrote:
>
> Looking at it further it appears to be rows of cloudbanks. Maybe a ripples
> texture in the media?
>
No, it's a problem with media methods 2 and 3... The
sample_spacing patch should help there too, if I ever
integrate it with megapov...
Jerome
--
******************************* Jérôme M. BERGER
* Doctor Jekyll had something * mailto:ber### [at] inamecom
* to Hyde... * http://www.enst.fr/~jberger
*******************************
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Hey Abe you've done it again, your images always look great.
There's a slight purple tinge to the sky that doesn't look
realistic, but this defect is something you see all the time
in photographs, I even notice it in very high quality
photographic work.
--
Cheers
Steve email mailto:sjl### [at] ndirectcouk
%HAV-A-NICEDAY Error not enough coffee 0 pps.
web http://www.ndirect.co.uk/~sjlen/
or http://start.at/zero-pps
2:11am up 1 day, 10:22, 6 users, load average: 4.05, 3.84, 3.44
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