New Cassini Jupiter maps

Tips for creating and manipulating planet textures for Celestia.
tabuzz
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Post #21by tabuzz » 28.03.2006, 19:15

t00fri wrote:
You got to count the pixel-difference in the texture AREA, hence the SQUARE of the ratio.

ok Fridger, thanks for your explains !
Last edited by tabuzz on 28.03.2006, 22:43, edited 1 time in total.

Don. Edwards
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Post #22by Don. Edwards » 28.03.2006, 22:24

tabuzz,

Fridger is right, it is 23%. Each time you move up or down in a texture size is isn't a doubling of the texture but a quadrupling of it. What this means is that 4096x2048 texture is in reality not twice as big as a 2048x1024 but 4 times its size. Four 2048x1024 texture will fit inside a 4096x2048.

I personally have resized the image in Photoshop and used a few tricks to come up with a very nice texture at the 4k level. Fridger's worries of distortion are merited but the impact is small at best. The increase in surface detail is well worth the effort. Another thing is that there is a large blank grey area at the bottom the needs to be removed. This puts the texture closer to a normal aspect ratio. Just my thoughts.

Don. Edwards
I am officially a retired member.
I might answer a PM or a post if its relevant to something.

Ah, never say never!!
Past texture releases, Hmm let me think about it

Thanks for your understanding.

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t00fri
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Post #23by t00fri » 28.03.2006, 22:47

Don. Edwards wrote:...
Fridger's worries of distortion are merited but the impact is small at best. The increase in surface detail is well worth the effort.
...

Don. Edwards


Don,

I am not worried and actually also blew up the texture to 4k. I just wanted Daniel to realize that we are talking about ~ 25% missing pixels relative to a genuine 4k texture.

In fact my old semi-transparent rotating cloud belts go nicely also with the new texture. It gives some extra fluffy cloud "feeling" ;-)

Bye Fridger

bh
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Post #24by bh » 28.03.2006, 22:51

Hey Fridger!...I am using your clouds! Very nice with this texture.
regards...bh.

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t00fri
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Post #25by t00fri » 28.03.2006, 22:54

bh wrote:Hey Fridger!...I am using your clouds! Very nice with this texture.


Aha! Yes they fit well....

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Malenfant
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Post #26by Malenfant » 29.03.2006, 00:55

t00fri wrote:Since I DO NOT publish my work in the Motherlode, it might always be worth checking for other (familiar?) places that specialize on HIGH QUALITY ;-) .


If you want people to use your textures, might I suggest actually putting a link to them in your sig? Or in the WWW link in your profile? Otherwise how are they to find out where these sites are?
My Celestia page: Spica system, planetary magnitudes script, updated demo.cel, Quad system

Don. Edwards
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Post #27by Don. Edwards » 29.03.2006, 01:31

Fridger's site is
The Celestia Texture Foundry at
http://www.celestiaproject.net/~t00fri/texfoundry.php4

hope that helps, his site is hostd right here on the server as mine is.

Don. Edwards
I am officially a retired member.
I might answer a PM or a post if its relevant to something.

Ah, never say never!!
Past texture releases, Hmm let me think about it

Thanks for your understanding.

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Malenfant
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Post #28by Malenfant » 29.03.2006, 01:54

Don. Edwards wrote:Fridger's site is
The Celestia Texture Foundry at
http://www.celestiaproject.net/~t00fri/texfoundry.php4

hope that helps, his site is hostd right here on the server as mine is.

Don. Edwards


you sure that's the current one? The "last updated" text there says it was last updated in 2003...
My Celestia page: Spica system, planetary magnitudes script, updated demo.cel, Quad system

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t00fri
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Post #29by t00fri » 29.03.2006, 09:16

Malenfant wrote:
t00fri wrote:Since I DO NOT publish my work in the Motherlode, it might always be worth checking for other (familiar?) places that specialize on HIGH QUALITY ;-) .

If you want people to use your textures, might I suggest actually putting a link to them in your sig? Or in the WWW link in your profile? Otherwise how are they to find out where these sites are?

Don.Edwards wrote:Fridger's site is
The Celestia Texture Foundry at
http://www.celestiaproject.net/~t00fri/texfoundry.php4

hope that helps, his site is hostd right here on the server as mine is.

Don. Edwards


While my TextureFoundry was indeed the FIRST site in existence for Celestia textures (17200 downloaders since July 2002), I did never update the site for various (technical) reasons. But I have meanwhile produced and published quite a few high-quality textures and lots of other useful stuff like various scripts, huge Earth location files etc. Many of the things are since long part of the official Celestia distribution. The remaining ones are easy to find with the Forum search engine. They are always located on Chris' server in Seattle. Here is the basic URL:

http://www.celestiaproject.net/~t00fri/

This is of course also the root directory for the TextureFoundry.
All my published images and other stuff you find in the 'images' subdirectory. The FT-1.x Celestia versions are in the 'celestia' subdirectory.

+++++++++++++++
The situation will soon improve considerably, but I guess I am not supposed to say more at this time... ;-)
+++++++++++++++

Bye Fridger

Don. Edwards
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Post #30by Don. Edwards » 29.03.2006, 10:53

Well here is how mine turned out.

Image

Image

Image

Image

I added a specmap and created an 8k normalmap for it. I tried a 4k but it was to grainy. But I think this looks very good.

thanks for the link and info.

Don. Edwards
I am officially a retired member.
I might answer a PM or a post if its relevant to something.

Ah, never say never!!
Past texture releases, Hmm let me think about it

Thanks for your understanding.

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t00fri
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Post #31by t00fri » 29.03.2006, 12:25

I always use a specmap, too ;-) Never dared to mention this, since there is no real reason for reflectivity. However, as many experts know the display looks much better, nevertheless ;-)

Bye Fridger

Giorgio
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Post #32by Giorgio » 29.03.2006, 22:44

Are you sure Fridger? I have this faint memory of high school astronomy lessons and Jupiter was said to have missed the critical mass to become a star itself, but still emitted more light than it received from the sun. Well it's just a memory and it was just high school. But, perhaps a certain luminosity via some diffused specular effect may just right and not just a trick to make it look more three-dimensional in Celestia (I trick which I personally use with every gas giant in the solar system). Anyway I use your Jupiter and Jupiter rotating cloudmap too. They look very good, especially from distance with small FOV settings.
Still I would be very glad to try some of these higher detail maps. I hope Don is going to share his work with us this time too :)

Johaen
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Post #33by Johaen » 29.03.2006, 23:02

It emits more heat than it recieves, not light. If the sun wasn't there, Jupiter would be black, just like every other planet.

bh
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Post #34by bh » 29.03.2006, 23:03

Jupiter Central...hehe. Those 8ks look great Don.
regards...bh.

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Post #35by danielj » 31.03.2006, 12:54

Sorry,I don??t understand.Is a Jupiter Central available now?
And I don??t know why someone would make a 8k texture of Jupiter.Sorry,if I am being mistaken...

bh wrote:Jupiter Central...hehe. Those 8ks look great Don.

Don. Edwards
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Post #36by Don. Edwards » 31.03.2006, 13:37

danielj and bh,

There is no Jupiter Central and there isn't going to be one. The Jupiter texture is 4k like all the others. I enlarged the texture to 8k and used the red channel in the RGB to create a normalmap as doing so at 4k was giving me allot of noise and artifacts. At 8k I was able to create a smoother normalmap all be it a big one. This of course isn't for everyone.
As for making a an 8k texture of Jupiter, if I had the images for that resolution I would make one. Seeing all the detail in the cloud layers would be great, and it would allow you to get closer without loosing focus, and that is really the main reason to make a big texture in the first place.

Don. Edwards
I am officially a retired member.
I might answer a PM or a post if its relevant to something.

Ah, never say never!!
Past texture releases, Hmm let me think about it

Thanks for your understanding.

bh
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Post #37by bh » 31.03.2006, 14:05

danielj and Don...hold tight guys...just my Oxford 'humour'...looking good though Don!
regards...bh.

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fsgregs
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Post #38by fsgregs » 14.06.2006, 14:07

Fightspit, Tabuuz, Don or Fridger:

I cannot seem to find a working upload link to the new Cassini Jupiter texture. Could someone post a fresh link to the new 4k Cassini textures for Jupiter, or could the dds and png textures be put on Motherlode ... please ... :)

I am anxious to see and enjoy them.

Thank you as always for the work you do.

Frank

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John Van Vliet
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re

Post #39by John Van Vliet » 14.06.2006, 21:01

if someone wants to make an 8k out of the jupiter texture then i would segest using the pde-2d in cimg.h lib to in-paint it up to 8k
( this will require your box to run ALL NIGHT AND INTO THE NEXT DAY
but might be worth it )

Don. Edwards
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Post #40by Don. Edwards » 14.06.2006, 21:33

Or load those files onto a dedicated second computer. Not a bad idea really.

Don. Edwards
I am officially a retired member.
I might answer a PM or a post if its relevant to something.

Ah, never say never!!
Past texture releases, Hmm let me think about it

Thanks for your understanding.


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