Celestia Forums

I already downloaded the "bmng" data (world.200406.3x86400x43200.bin.gz) and I finished to decompress it (it takes 10 GB ).

After searching with google how to convert a binary picture to an other format without sucess , I ask you if you know an utility or a "SINGLE" command line (as t00fri ) which can do it (I hope ).

Thanks for the help

ImageMagick and NetPBM both are command line utility packages that can convert among different image formats. Neither one understands DDS/DXT, though. Both are freeware and available for multiple platforms.

I have already got Imagemagick but it doesn't support ".bin" format:
http://www.imagemagick.org/script/formats.php

I am not sure that NetPBM recognize ".bin" images:
http://netpbm.sourceforge.net/doc/index.html#formats

Fightpit wrote:

I have already got Imagemagick but it doesn't support ".bin" format:

IM can open the .bin file. Rename it to .rgb and give dimensions and depth info on the command line.

Edit: It's been a while and the depth may be wrong or unnecessary.

Of course it works, but you havn't got enough cache space on your hd! You need ~ > 50 GB FREE space where you started convert. IM is highly inefficient and incredibly slow for VERY big files. It's just not suited...

I do the conversion directly with my custom code, which is VERY easy and fast.

It doesn't work with or without depth option



EDIT: I have a bug with this post and I don't know why ...

t00fri wrote:You need ~ > 50 GB FREE space where you started convert. IM is highly inefficient and incredibly slow for VERY big files. It's just not suited...

Wow 50 GB thanks for advise.

I do the conversion directly with my custom code, which is VERY easy and fast.

Edit: Unnecessary to aks him to test his code

Deleted.

I just looked at my bash history and i think the - depth 8 was used. I couldn't find that exact command though. I used to get those eof errors and it was caused by not enough memory or pixel cache that a too small. IM would crash with a eof when it ran out of memory. The other reason I got them was the file was corrupted by the extraction process.
If you have the space you need to set an environment variable for IM's pixel cache. I beleive IM needed about 60 GB to process a rgb file that large.

If you have access to Photoshop try renaming the extension to .raw and input the image parameters in the 'Photoshop RAW Options' dialog:

Dimensions
Width: 86400
Height: 43200

Channels
Count: 3
Depth: 8 bits
Byte Order: Mac

Header
Size: 0

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Note: I don't recall if the byte order is Mac ("Big Endian") or IBM PC ("Little Endian") so try one or the other if the file loads improperly.
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BTW, unless you REALLY need this file in this form it might be easier just to use the 500 meter non-shaded BMNG PNG tiles. They're exactly the same.

Lone