Thanks, Guy. Ha ha. No big deal re: the job. I only did it for 30 years.
I’m capable of doing command line stuff, but not a huge fan. Ran into an error trying to install UFRaw and ground pretty quickly to a halt. I did send Emily an email telling her that I was able to open the Phoenix .img image with NASAview 3.18.0 and save as a GIF. JPEG is another NASAview save option, but I figure she’d want to go with the least lossy format available. I’ll pass the info along to her. Best, Rick * * ** *** ***** ******** ************* ********************* It’s better to wave at a stranger than to ignore a friend * * ** *** ***** ******** ************* ********************* > On Jan 30, 2019, at 1:44 PM, Guy Stalnaker <jimmyg...@gmail.com> wrote: > > LOL > > It pays to make no assumptions about folks one meets online (in forums, > Twitter, etc.) > > Rick Kline > Data Manager (ret.) <-- ! > Spacecraft Planetary Imaging Facility, Cornell University <-- !!!! > > Indeed :-) > > I followed Stave Liam's method and it does mostly work (using Emily > Lakdawalla's test image I saw mostly what she sees in her Photoshop process > though there is "missing" data--you'll see what I mean if you do this). > Biggest issue is that GIMP, as she says, makes assumptions about data > encoding and the only options in the GIMP open dialog where you specify > information about the image provides no options that seem relevant to the way > the data is encoded in the .img file. > > Liam mentions G'MIC and you may have more success there. It, like GIMP, is > free and, more importantly, it has far more options related to image data > content (it's written by imaging data scientists for use in manipulating > scientific image data). And it's scriptable already! A steep learning curve > for someone like me with no background in such things, but for you and your > background it may be just what you're looking for (and I can attest that > G'MIC developers are veyr nice people who are approachable if you have > questions). If you're comfortable with a command line (and I can't imagine > you are not given your background) G'MIC may save you a fair bit of time. > > Regards, > > GuyS > > Guy Stalnaker > jimmyg...@gmail.com <mailto:jimmyg...@gmail.com> > > On Wed, Jan 30, 2019 at 12:18 PM Rick Kline <r...@kline.ms > <mailto:r...@kline.ms>> wrote: > Thanks, Liam, > > I like the “change the file type” method best, because there’s no messing > with the contents. Easy enough to find header size (offset) - look at the > file info, Lines x Samples x bytes (16 bit image = 2 bytes). Subtract result > from actual file size and you have the header size. > > In PDS images, the ^image (“hat image”) parameter tells what byte the image > starts on. I used to use that in P’shop when importing uncompressed (.img) > PDS images. Even wrote some scripts for P’shop and NIH Image (now Image J) to > import Viking Orbiter, Viking Lander, and Magellan images that used ^image. > Those scripts are probably long gone, and I’m retired from the Astro job. May > have to contact my also retired work friend known as Dr. Bithead to get some > help with script writing for GIMP. > > I’ll give the .data trick a try. > > Best, > > Rick Kline > Data Manager (ret.) > Spacecraft Planetary Imaging Facility, Cornell University > > * * ** *** ***** ******** ************* ********************* > It’s better to wave at a stranger than to ignore a friend > * * ** *** ***** ******** ************* ********************* > > > > > On Jan 29, 2019, at 9:42 PM, Liam R E Quin <l...@holoweb.net > > <mailto:l...@holoweb.net>> wrote: > > > > On Tue, 2019-01-29 at 11:43 -0500, Rick Kline wrote: > >> Hi, > >> > >> Some folks working with planetary data would like to use raw PDS > > > > http://areo.info/gimp/ <http://areo.info/gimp/> may help. It needs to be > > updated to handle 16- > > bit images now that GIMP can open them. > > > > it’s also possible to use ImageMagick or g'mic to conver the VICAR/PDS > > raw images to PNG, although you may need to use a hex (or octal) editor > > to work out where the image starts exactly. You can also name the image > > something.data and open it in GIMP, and the pop-up window will ask you > > for an offest and the format. > > > > Hope this helps, > > > > slave liam > > > > > > -- > > Liam Quin - web slave for https://www.fromoldbooks.org/ > > <https://www.fromoldbooks.org/> > > with fabulous vintage art and fascinating texts to read. > > Click here to have the slave beaten. > > > > _______________________________________________ > gimp-user-list mailing list > List address: gimp-user-list@gnome.org <mailto:gimp-user-list@gnome.org> > List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list > <https://mail.gnome.org/mailman/listinfo/gimp-user-list> > List archives: https://mail.gnome.org/archives/gimp-user-list > <https://mail.gnome.org/archives/gimp-user-list> _______________________________________________ gimp-user-list mailing list List address: gimp-user-list@gnome.org List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list List archives: https://mail.gnome.org/archives/gimp-user-list
