21600x10800 Earth texture from NASA's "Visible Earth"

[Stargazer_2098]

The freeware game Orbiter ( http://www.orbitersim.com ) uses the "Blue Marble" textures from NASA to render earth. It worked out nicely.


Stargazer.

[jliechty]

I downloaded both of the images in TIFF format a few weeks ago (on 56K). However, they take about 6 minutes just to load in Photoshop on my box with 256MB of RAM, and with my lowly Radeon VE I'm afraid to try even a very-much-downsized version. Perhaps someone with one of those 3dlabs video cards with 256+ MB of video ram could try it out and let us all know how beautiful it looks at such a high res

[Pixel]

I downloaded both of the images in TIFF format a few weeks ago (on 56K). However, they take about 6 minutes just to load in Photoshop on my box with 256MB of RAM, and with my lowly Radeon VE I'm afraid to try even a very-much-downsized version. Perhaps someone with one of those 3dlabs video cards with 256+ MB of video ram could try it out and let us all know how beautiful it looks at such a high res

You can check at least 2.5 times less resolution results here:
ftp://ftp.dasmirnov.net/astronomy/celestia/textures/pixel/misc/Gallery16k.zip

[jliechty]

You can check at least 2.5 times less resolution results here:
ftp://ftp.dasmirnov.net/astronomy/celestia/textures/pixel/misc/Gallery16k.zip

Thank you for the suggestion. I'm downloading those right now, and will try them out soon.

[Honkey]

Can anyone post the images on a webstie or FTPsite. NASA's ftp has been under severe load for the last couple days and will not allow any anonymous requests.

Thanks!!!

[Guest]

It seems to me that high resolution textures are more important on a program like Orbiter, where one actually launches and lands on the surface. I have both programs, and use Orbiter for my earth viewing needs and Celestia for great views of the niverse. As long as you don't zoom in too far in Celestia, the default earth texture looks fine. Maybe I'm just saying this because I have a 56k modem connection. I'm perfectly happy with the medres textures at that speed!

[Guest]

please, could you say me how to crop such large TIFF file.
With which tools? psp don't load
I've 400Mo 21600x21600 but only 256Mo memory...

thanks

[t00fri]

please, could you say me how to crop such large TIFF file.
With which tools? psp don't load
I've 400Mo 21600x21600 but only 256Mo memory...

thanks

If you have so little memory, you should tell us first of all what your OS is, because the tools you have to use and the assignment of swap space/virtual memory are different whether you use UNIX/Linux or Windows.

Probably, however, your system will be too small. Also, you need a fast CPU (P4 level). You must also be able to display such large files with your graphics card. So do you know what you are doing or are you a beginner?

Bye Fridger

[Guest]

If you have so little memory, you should tell us first of all what your OS is, because the tools you have to use and the assignment of swap space/virtual memory are different whether you use UNIX/Linux or Windows.

My system is : XP1700, 256 Mo PC133, win2k (but maybe linux soon), and radeon 9k pro 128MB (not so good). 384Mo virtual memory up to 1024Mo

So do you know what you are doing or are you a beginner?

Bye Fridger

I'm not a beginner but need some help

I was thinking there is a tools to crop (crop=cut in multiple files, isn'it?) large TIFF file without loading it entirely in memory.
convert.exe of ImageMagick can't do that.
under GIMP, i see the first upper left quarter... and after that crash

What i want is to cut from east.tiff (400Mo 21600x21600) a portion between 2000- 8000 in width and 0-10000 in height.

So, is it possible with my system? under win2k or linux

Thanks you for your advices

[t00fri]

If you have so little memory, you should tell us first of all what your OS is, because the tools you have to use and the assignment of swap space/virtual memory are different whether you use UNIX/Linux or Windows.

My system is : XP1700, 256 Mo PC133, win2k (but maybe linux soon), and radeon 9k pro 128MB (not so good). 384Mo virtual memory up to 1024Mo

So do you know what you are doing or are you a beginner?

Bye Fridger

I'm not a beginner but need some help

I was thinking there is a tools to crop (crop=cut in multiple files, isn'it?) large TIFF file without loading it entirely in memory.
convert.exe of ImageMagick can't do that.
under GIMP, i see the first upper left quarter... and after that crash

What i want is to cut from east.tiff (400Mo 21600x21600) a portion between 2000- 8000 in width and 0-10000 in height.

So, is it possible with my system? under win2k or linux

Thanks you for your advices

you simply have too little RAM + virtual memory for the usual tools like IM's convert, mogrify, etc...You need to assign several GB's as virtual memory. If your HD is big enough, you may always do that.

Another possibility is to use the NetPbm tools under Windows/Cygwin that work without loading the file to be worked on, i.e. on a line-by-line basis.

IM's convert works with virtual memory if there is no RAM left. In Linux you correspondingly need to assign > 1GB of swap space.

I have 512 MB of RAM + 1GB of swap under Linux and can work on all these big textures with convert, mogrify without problems.


Bye Fridger

[selden]

Most of the NetPBM utilities work on one scanline at a time, so they don't need a lot of virtual memory. The homepage on SourceForge includes links to binaries built for different platforms, including Windows.

[John Van Vliet]

gimp will open the .tif from visable earth but it will use all the page file space
and will nead 45 min to load on win xp

[t00fri]

gimp will open the .tif from visable earth but it will use all the page file space
and will nead 45 min to load on win xp

It is generally much more advisable to use command line utilities for such monster files. In Linux, one might even work on the console level without starting the X-server! This saves 100's of MB of RAM...

Memory management is most crucial. Either via virtual memory/swap
(ImageMagic) or 1 scanline at a time (NetPbm utilities) without loading the file at all...

Bye Fridger

[Harry]

Linux + netpbm did a good job here - netpbm needs hardly any Ram, but to save the result you need some GB on your disk (and a couple of hours time).

So if you want to take a look at what the actual quality is without downloading 600 MB of TIFFs, there is an imagemap-version at

http://www.h-schmidt.net/map/

Clicking on the map will show that part in full resolution. The full image has been sliced into 800 single 1080x1080 images. Maybe I should have used 1024x1024, I just did not think about it in advance. But if there is sufficient demand, I could create it :/

This version uses some javascript to mark the part of the image which will be shown on a click (only tested on Firebird/Mozilla and Opera). Please report any problems.

Because of the size (>50 MB) it probably won't stay there forever, but I hope I won't need that space anytime soon.

Harald

[Guest]

Harald...great job...I've only looked at a few of the tiles but they look great!

Regards...bh.

[bh]

Harald...do you have plans to make this a downloadable virtual texture?

Regards...bh.

[Harry]

Harald...do you have plans to make this a downloadable virtual texture?

Probably not , but what about the one at http://www.marfig.com/celestia/? This seems to be based on the same data. See the thread "32k BlueMarble Virtual Earth Texture is now available" in "Celestia Textures".

My page is for people to have a quick look at the data, without downloading some hundred MB.

[Guest]

Is there somewhere I can download a Level 6 earth texture ... I assume it will be about 1GB

ron

[Pollux]

If you are only interested in viewing (zooming, panning...) HUGE images as these, you can try ER Viewer. It's small, free and VERY fast! , even with small memory / swap. It only needs registering.
You can found it at http://www.ermapper.com/download_new/

[Guest]

ERmapper gives a distorted view of the earth ... ie typically a mercator style projection if you are using the blue marble image. Celestia shows true areas as image is drapped over a 3D sphere