Need help with 34K Venus DEM but its in PDS4 format

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Shadow-Dragon-777
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Need help with 34K Venus DEM but its in PDS4 format

Post #1by Shadow-Dragon-777 » 05.06.2022, 15:14

https://pds-geosciences.wustl.edu/mgn/urn-nasa-pds-magellan_stereo_topography/data/
There's this 32K DEM of Venus that I would like to use but its in PDS4 format meaning img2png does not work on it.
Any help would be appreciated to get this converted to png format so I can make a giant 64K Venus bumpmap!!!
The file is mosaic_allstereo.img with the .hdr going with it.

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John Van Vliet
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Post #2by John Van Vliet » 06.06.2022, 03:32

ISIS4 will import it , but as i recall it is only a very partial DEM , only a small part of the planet is there

the ISIS install guide
https://github.com/USGS-Astrogeology/ISIS3#installation

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Post #3by Shadow-Dragon-777 » 07.06.2022, 01:46

Unfortunately, I only have a Windows computer which is incompatible with ISIS without a considerable number of extra steps. If possible, could you convert this to a PNG and store it on your drive? You will be credited in my addon for your help.

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Post #4by John Van Vliet » 08.06.2022, 12:13

I can do that , but give me a few days to do it

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Post #5by John Van Vliet » 09.06.2022, 14:45

here is a screenshot, do you really want it

Screenshot_20220609_104404.png

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Post #6by Shadow-Dragon-777 » 09.06.2022, 14:52

Yes I would like that map please! It would provide extra detail in areas of Venus as a PNG.

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Post #7by John Van Vliet » 09.06.2022, 19:20

here is a link to a 32 bit floating point image ( 653 meg zip )
https://drive.google.com/file/d/19HNMJrh-DqCSPICnqtWgMNhWobXuRPHO/view?usp=sharing

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Post #8by Shadow-Dragon-777 » 10.06.2022, 22:07

Thank you so much!

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Post #9by John Van Vliet » 13.06.2022, 16:28


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Post #10by Shadow-Dragon-777 » 14.06.2022, 01:25

Thank you! This will also be great to use when I make my 20K terraformed map of it in beautiful crisp 16 bit detail as opposed to the pixelated 8 bit detail! (It's the biggest size GIMP will allow the paintbrush to be and anything bigger slows down the computer too much to allow me to make a terraformed map.)

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Post #11by Shadow-Dragon-777 » 18.06.2022, 06:33

While browsing through articles, I found an 11K cub DEM of Io https://agupubs.onlinelibrary.wiley.com/action/do ... 02/2013JE004591&file=IoDEM.cub

It is not of the whole thing but with smoothing of unmapped areas, I could make it act as a decent shaded map for most of it.
16.97 is highest -3.1 is the lowest.

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Post #12by John Van Vliet » 19.06.2022, 01:58

here is a screenshot of that dem

Screenshot_20220618_215609.png




.

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Post #13by trappistplanets » 19.06.2022, 11:36

John Van Vliet wrote:here is a screenshot of that dem
i would like to have it, can you convert to an 8k png pls
There is a limit to how far we can travel into the stars.
Owner of "The Grand Voyage" addon series
Collaborating with Dangerous_safety for the still developing Cer system

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Post #14by Shadow-Dragon-777 » 19.06.2022, 16:38

I would like a 16 bit version of that please. The mountains of Io will really stand out with my addon!

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Post #15by John Van Vliet » 20.06.2022, 02:52

here is a zip. It contains 2 images a 16 bit UNSIGNED normalized tiff and a 16 bit SIGNED integer tiff that is in Meters of height
the mapping is 90 north to -90 south
and
360 west to 0 east
https://drive.google.com/file/d/1LUZRQzNuNMJ9EXJgzgba90GWnOaMKUae/view?usp=sharing


.

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Post #16by Shadow-Dragon-777 » 21.06.2022, 19:58

Thank you! This will be useful in adding elevation detail to much of Io.


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