IMG2PNG, PDS/FITS to PNG conversion Options

[Bjorn Jonsson]

Turns out there was a subtle bug in the new 64 bit version of IMG2PNG announced in the previous post. The error was caused by internal changes that were necessary for the 64 bit version to work when converting very large images. The bug affected the calibration of Cassini images. In special cases it could also mess up the conversion of image files containing floating point data. A new version is now available where this bug has been fixed.

As usual, IMG2PNG is available here:

http://bjj.mmedia.is/utils/img2png/index.html

If you downloaded the version announced in the previous post I strongly recommend upgrading to this new version (this applies not only to the 64 bit version - the 32 bit version mentioned in the previous post was also affected).

[Antdoghalo]

Hi, I'm trying to convert Img files with this and it keeps saying "The Disk Image File is corrupted". I think I might be typing something wrong in cmd but I am not sure.
EDIT:I was typing it wrong but now it's not recognizing the command.

[Bjorn Jonsson]

I recently fixed a bug in IMG2PNG that occurred when converting input files containing more than one band of floating point data where the number of bands is not 3. These files are not very common (or at least not many users of IMG2PNG have attempted to convert these files).

As usual, IMG2PNG is available here:

http://bjj.mmedia.is/utils/img2png/index.html

[stevesliva]

Doug told me this was okay to post...

Three shall be the number thou shalt count, and the number of the counting shall be three. Four shalt thou not count, neither count thou two, excepting that thou then proceed to three.

... for prior versions, obviously.

[nprev]

I take it that five is right out, then...?

[RonCatwanson]

I recently fixed a bug in IMG2PNG that occurred when converting input files containing more than one band of floating point data where the number of bands is not 3. These files are not very common (or at least not many users of IMG2PNG have attempted to convert these files).

As usual, IMG2PNG is available here:

http://bjj.mmedia.is/utils/img2png/index.html

Hi, Bjorn! Is it possible to get source files of img2png somehow? One of my friends, software developer, got challenge starving and want to try to recompile it for linux\macOS systems. img2pmg still one of the best apps to convert img\fits files, but it is always painful to install virtual machine to use only this one tiny program.

[JohnVV]

img2png might be useful on linux
but seeing as ISIS3 and ISIS4 already are linux programs it might not be needed

"isis2std" already outputs to png,jpg, and tiff ( 16 and 8 bit)
and "cubeatt" will output to a 32bit raw image

[volcanopele]

There are a few data sets that are not properly supported by ISIS4 that are with IMG2PNG, for example Juno JIRAM. Though in that case, I can bring the images into Photoshop, but IMG2PNG does provide quite browse products.

[djellison]

I see in the release notes that Chang'e 3 data is supported complete with a debayer option added around the same time..

FWIW - I tried some recently downloaded Chang'e 5 data and got this error..

CODE

Converting CE5-L_GRAS_PCAML-I-138_SCI_N_20201202181302_20201202181302_0003_A.2B
Attempting to detect the format of CE5-L_GRAS_PCAML-I-138_SCI_N_20201202181302_20201202181302_0003_A.2B, length=8191
Can't detect the format of file CE5-L_GRAS_PCAML-I-138_SCI_N_20201202181302_20201202181302_0003_A.2B
Couldn't convert CE5-L_GRAS_PCAML-I-138_SCI_N_20201202181302_20201202181302_0003_A.2B

I went and checked - and CE3 PCAM images do process well - and I think the CE4 and CE5 images are largely the same.

Maybe something to consider for the next release!

Doug

[Antdoghalo]

Are their plans to one day incorporate PDS4 conversion as those products grow in number?

[Bjorn Jonsson]

Yes, I will be adding PDS4 support. This is a fairly big change though - finding the time to do it is the main problem since I'm currently working on some very large image processing projects that I want to finish first (or at least finish some of them).

I went and checked - and CE3 PCAM images do process well - and I think the CE4 and CE5 images are largely the same.

Maybe something to consider for the next release!

In contrast to PDS4 this should be a trivial change. I'll probably add CE4 and CE5 conversion soon (hopefully this month).

[Bjorn Jonsson]

A new version of IMG2PNG is now available. This is just a minor update and only of importance in a few rare cases. The only change is that files containing 64 bit floating point data can now be converted (example: Dawn Vesta gravity maps).

As usual, IMG2PNG is available here:

http://bjj.mmedia.is/utils/img2png/index.html

I see in the release notes that Chang'e 3 data is supported complete with a debayer option added around the same time..

FWIW - I tried some recently downloaded Chang'e 5 data and got this error..

The reason for the error turned out to be that this is a PDS4 data set. I hadn't noticed this above when I replied that this problem with the Chang'e 5 data would be trivial to fix. Adding PDS4 support is a major change. I have started work on it but it is proceeding slowly due to various other projects.

[Bjorn Jonsson]

A new version of IMG2PNG is now available. This fixes a bug that could result in IMG2PNG terminating (or even crashing) without converting all of the files it should convert. Also fixed a minor bug involving VICAR formatted files.

As usual, IMG2PNG is available here:

http://bjj.mmedia.is/utils/img2png/index.html

[Antdoghalo]

Is there a possible ETA on a PDS4 compatibility? A lot of things are now PDS4 these days and conversion projects at PDS are rendering the tool increasingly obsolete.
Found these cool maps of Rhea and Dione but unable to convert them.
https://pdsimage2.wr.usgs.gov/Individual_In..._scipioni_2022/