Post AsX6mpbHCf60cLJ2CO by smn@l3ib.org
(DIR) More posts by smn@l3ib.org
(DIR) Post #AsWhrpqTDoVXyHhatc by futurebird@sauropods.win
2025-03-28T21:58:27Z
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I have a character who is "good with the computer" experimental psychologist at CUNY (but I don't call it that) uses linux.If she had to investigate what is basically a haunted jpeg what software would she use to check the hue and saturation of various pixels of the image?I'd rather not mention gimp because the name is ... IDK weren't they going to change that?It's a jpeg where different people see different things. She's determined to get to the bottom of it.
(DIR) Post #AsWhvP9wNiOeMfVlQW by futurebird@sauropods.win
2025-03-28T21:59:06Z
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I mean I could probably look this up, but someone like her is probably on here right now and could tell me what they are using.
(DIR) Post #AsWhzshAVeZ37wBiAy by skyfaller@jawns.club
2025-03-28T21:59:50Z
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@futurebird Could go for Krita instead. Not sure why Krita doesn't get more attention, frankly. https://en.wikipedia.org/wiki/Krita
(DIR) Post #AsWiCLUTH8i7uPBzCi by RogerBW@discordian.social
2025-03-28T22:02:08Z
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@futurebird If I were doing that, I'd probably use my programming language of choice and an image manipulation library (e.g. "Imager" for Perl, "image" for Rust) to get the pixel values out, then do mathematical manipulations on them.
(DIR) Post #AsWiGVgRJtaEgEmBg8 by andyprice@mastodon.social
2025-03-28T22:02:51Z
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@futurebird I think Krita would be a good alternative.
(DIR) Post #AsWiPYjhL8WgkncD8y by aparrish@friend.camp
2025-03-28T22:04:24Z
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@futurebird probably the Pillow library with Python, or with a library like scikit-image (or equivalent for whatever other language she might prefer!)
(DIR) Post #AsWia8BgO56JbGkJCS by cosminribo@framapiaf.org
2025-03-28T22:06:24Z
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@futurebird Image analysis can be done with FIJI (https://fiji.sc/), which uses ImageJ and is extensible. It's written in Java, thus not Linux-specific as it works equally well in a Windows or Mac environment...
(DIR) Post #AsWibuXS6XsHqdmFP6 by futurebird@sauropods.win
2025-03-28T22:06:44Z
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@riley now or maybe 10 years in the future.
(DIR) Post #AsWid8vA7HzwkBSFua by chessert@mastodon.online
2025-03-28T22:06:56Z
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@futurebird The ImageMagick library is chock full of image utilities. More detailed info than anything else, I think?
(DIR) Post #AsWihRwpJiyaufHr4i by c@normal.style
2025-03-28T22:07:45Z
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@futurebird honestly i would probably use GIMP but if you don't want to say that you can just spell out the acronym. GNU Image Manipulation Program. I think that obscures it enough esp cuz there's already an acronym in there
(DIR) Post #AsWiif8Rlvpq6QIh6G by JetlagJen@geekdom.social
2025-03-28T22:07:56Z
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@futurebird Glimpse? It's a fork of GIMP, which fixes the issue with the name.
(DIR) Post #AsWiloXLH2cA86RpTc by y6nH@im-in.space
2025-03-28T22:08:26Z
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@futurebird They were all "haha no it's GNU IMP", but then continued to call it GIMP everywhere. Unfortunately, it is still the standard free photo editing software. Krita's aimed more at digital painting than photo editing, but it could absolutely do what your character needs.
(DIR) Post #AsWirVcWW9VPCOaS3s by mhoye@mastodon.social
2025-03-28T22:09:35Z
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@futurebird with "identify" in the imagemagick toolset.identify -verbose file.jpeg
(DIR) Post #AsWj4UH4phfQmzkBtY by lopta@mastodon.social
2025-03-28T22:11:49Z
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@futurebird You could just call it "Imp" (suggested I think by @JoeRess ).
(DIR) Post #AsWjGLTDOP6IxU4lMG by shovemedia@triangletoot.party
2025-03-28T22:14:02Z
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@futurebird this may be a let-down on the nerd factor, but programmers are laaaazy. I guarantee there’s a web utility that lets you select a local image file and displays HSV color values at the mouse pointer coordinates. Totally understand avoiding G*MP; pretty sure Inkscape will do this, but most people don’t think of it for raster graphics
(DIR) Post #AsWjL72sS1uXfW1uOu by BenAveling@infosec.exchange
2025-03-28T22:14:55Z
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@futurebird Maybe invent a fictional name? If you called it PULP, then those that don't know won't know (and won't know that they don't know). While those that do know will know _exactly_ what you're (not) saying.
(DIR) Post #AsWjU4lOIyHzCI7nKy by futurebird@sauropods.win
2025-03-28T22:16:34Z
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@shovemedia Would you just upload the haunted jpeg all over the place? It is a VERY spooky file.
(DIR) Post #AsWjy90P65r12dU6We by lienrag@mastodon.tedomum.net
2025-03-28T22:21:17Z
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@futurebird it was blue and black !
(DIR) Post #AsWkzPFEJ265eMaK92 by DrHyde@fosstodon.org
2025-03-28T22:33:24Z
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@futurebird i want to read this story!
(DIR) Post #AsWl1wjokWqq6h6T7Q by skalden@me.dm
2025-03-28T22:33:53Z
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@futurebirdPerhaps she could use the command line tools in ImageMagick?
(DIR) Post #AsWl3pWkWuuwK2tBUe by shovemedia@triangletoot.party
2025-03-28T22:34:13Z
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@futurebird it’s possible to do this now without the bytes leaving the local machine, although a security conscious hacker wouldn’t trust an unknown website … maybe they could disable the WiFi after the site loads 🤔
(DIR) Post #AsWlasP8qxJOno5Xbk by nen@mementomori.social
2025-03-28T22:40:07Z
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@futurebird In the past I often used a dedicated color picker. Pick any pixel or region on the screen, show info about the colors, keep a history of recent colors for comparison (build a palette), etc.This works on modern Linux desktop but isn't as advanced as some old apps I remember: https://flathub.org/apps/nl.hjdskes.gcolor3And this one would suit better your kind of case if it wasn't broken on Wayland, but if fiction allows taking some liberties, why not: https://www.gpick.org/
(DIR) Post #AsWlr9GVvswNjEoOkC by skalden@me.dm
2025-03-28T22:40:43Z
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@futurebirdAlso she might discover that when compression is increased, the haunted features become more visible
(DIR) Post #AsWlrARtX3ddOp907c by futurebird@sauropods.win
2025-03-28T22:43:08Z
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@skalden realistic! i've had that happen!
(DIR) Post #AsWmUePk3WTVd2xqdM by suetanvil@freeradical.zone
2025-03-28T22:50:15Z
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@futurebird - imagemagick - bunch of command-line tools that can query and/or transform images in various ways- G'MIC - image manipulation framework for writing filters; there's Krita plugin that uses it- Krita - graphics program with non-slur name.- Julia - programming language for scientific computing; has image libs that will load pictures as matrices for mangling.
(DIR) Post #AsWnDnsDjVN7zuoc7c by mcc@mastodon.social
2025-03-28T22:54:47Z
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@stevegis_ssg @futurebird I'd approach it in terms of "what would *this specific person* know?". A psych would very plausibly know some statistics, so pillow or a statistics package with python are likely, and R is also very likely but the reader might be less likely to be familiar.A swerve option might be if they found "an online converter" that turns an image into a CSV so they could import it into Excel. https://think-maths.co.uk/spreadsheet/
(DIR) Post #AsWnDpComPRU85SZrk by mcc@mastodon.social
2025-03-28T22:55:29Z
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@stevegis_ssg @futurebird that last option would be fun because after messing with the numbers in excel, they could simply zoom the spreadsheet out and see something else entirely from the pattern of colors-as-numbers.
(DIR) Post #AsWnDq9JGwEL3UpI2K by futurebird@sauropods.win
2025-03-28T22:58:25Z
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@mcc @stevegis_ssg OK I kind of like this. I wonder if ImageMagick could make a jpeg into a csv and then ... what do they use for spreadsheets on linux? LibreOffice? Could that make the text color coded? hmmm
(DIR) Post #AsWnnpOhXpAB9IBaGe by jandi@mastodon.social
2025-03-28T23:04:52Z
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@futurebird @mcc @stevegis_ssg Jpeg to csv, yes: https://www.dpreview.com/forums/thread/4464585For spreadsheets, depending of her style, could be the venerable Gnumeric: http://www.gnumeric.org/
(DIR) Post #AsWo0DBSvsuMOdtrGK by mcc@mastodon.social
2025-03-28T23:07:08Z
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@futurebird @stevegis_ssg LibreOffice CalcAs for the conversion, if it were me I'd like the procedural nature of "they looked on Google and found a site you could upload an image, and get back the pixel colors as numbers…" etc. But!https://www.imagemagick.org/discourse-server/viewtopic.php?t=34648And they could also Google for an imagemagick invocation… or ddg if they're like that I guess
(DIR) Post #AsWo6ZmdowkkE2K6uO by futurebird@sauropods.win
2025-03-28T23:08:21Z
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@mcc @stevegis_ssg The jpeg is haunted seems like a bad idea to upload it.
(DIR) Post #AsWoPIGBCHdHNZ44zw by kevinriggle@ioc.exchange
2025-03-28T23:11:38Z
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@futurebird @mcc @stevegis_ssg once or twice when I’ve been trying to assess whether a JPEG contains malware or not (a real life version of this) I’ve literally just opened it in a hex editor
(DIR) Post #AsWoQS50AnTM7kOAZU by scrottie@anarchism.space
2025-03-28T23:11:41Z
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@futurebird Image editing programs typically convert color spaces for you, and decoding libraries also. A lot happens between the data and the screen presentation. But if you were going to sample a pixel on your screen, maybe https://soft.github.io/xcolor/ . There's a whole class of "application firewall" (protocol decoding/exploit scanning) bypass that uses an ambiguity in the TCP specification, where it's not specified how to handle fragmented packets where the...
(DIR) Post #AsWqfiBalwuqKRsLXk by futurebird@sauropods.win
2025-03-28T23:37:01Z
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@apLundell @TerryHancock There is no steganography. No virus or anything. When one person looks at the image they see one thing, another looks at the same image and it's not exactly the same. So, they narrow it down to pixels to try to find out what's "correct."
(DIR) Post #AsWqkt5Jg7d1ZwPMpM by TerryHancock@realsocial.life
2025-03-28T23:38:01Z
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@futurebird @apLundell So that really is more like "The Dress".
(DIR) Post #AsWqmAxGisj3I9G4OG by TerryHancock@realsocial.life
2025-03-28T23:34:57Z
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@apLundell @futurebird IDK, with this kind of story, it sounds like it's going to touch on embedded metadata or steganography. I don't if this is going for "technological urban magic" or "cyberpunk" genre.You could maybe do the latter if you used a format that not only allowed for programs, but also was able to sense the environment to trigger change (e.g. detecting the presence of key files to identify the target viewer).
(DIR) Post #AsWqmCQ1HTJlpbiXqK by TerryHancock@realsocial.life
2025-03-28T23:37:18Z
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@apLundell @futurebird I remember when "The Dress" was on all my social media, I did briefly consider how you could create an image URL that delivered different images depending on the requester's IP address.You know, serve "white/gold" on all EVEN IPs and "blue/black" on all ODD IPs.A little web server tinkering could do it! If you wanted to put the cat among the pigeons. 😈
(DIR) Post #AsWt447N56pXCwdqy0 by jannem@fosstodon.org
2025-03-29T00:03:53Z
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@futurebird The big question is what you mean by examining the pixels, I think. If you mean interactively zooming in and using a color picker tool to look at RGB values, then yes, either something like GIMP or Krita, or a color picker tool.If they really want to look at it in detail, then something like ImageMagick, ImageJ or even a Python or R program to look at line-wise histograms and statistics.
(DIR) Post #AsWvcf8m8dY9mlvJom by CStamp@mastodon.social
2025-03-29T00:32:33Z
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@futurebird Is it about that gold and white dress? 😃
(DIR) Post #AsWvv33ByqS59a4xO4 by AlgoCompSynth@mastodon.social
2025-03-29T00:35:42Z
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@futurebird DarkTable?
(DIR) Post #AsWw3PPQje1ioYT1xw by yomimono@wandering.shop
2025-03-29T00:36:39Z
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@futurebird IMO this is 900% a job for ImageMagick.
(DIR) Post #AsWwjUWk6568qkxD5E by futurebird@sauropods.win
2025-03-29T00:44:30Z
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@jpaskaruk OK that might be a bit much. LMAO
(DIR) Post #AsWwwii6fvPybSZrdo by futurebird@sauropods.win
2025-03-29T00:47:22Z
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@lilbatscholar @mcc @stevegis_ssg Obvious best answer is obvious.
(DIR) Post #AsX3RvyS0jSaRRUPLc by mcc@mastodon.social
2025-03-29T02:00:13Z
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@futurebird @stevegis_ssg but that sets up a dramatic third act twist when she discovers it escaped to the Internet! :D
(DIR) Post #AsX5HilGTps0TYZzm4 by pussreboots@sfba.social
2025-03-29T02:20:47Z
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@futurebird lots of good answers. She’s in academia. She probably knows someone who does data visualizations and might even have some code they’ve written that can be adapted.
(DIR) Post #AsX6mpbHCf60cLJ2CO by smn@l3ib.org
2025-03-29T02:37:38Z
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@futurebird try using imagemagick's convert utility to convert the jpeg into a xpm file, which is something you can open in a standard text editor and make decent sense of
(DIR) Post #AsXfXhGpO6i2ppGBvs by mansr@society.oftrolls.com
2025-03-29T09:00:53Z
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@mcc @stevegis_ssg @futurebird And then Excel turns the values into dates.
(DIR) Post #AsXfXiSCzHPIVPanJI by futurebird@sauropods.win
2025-03-29T09:06:45Z
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@mansr @mcc @stevegis_ssg But they are all June 6, 1966
(DIR) Post #AsZasl5KI1yhIA1XMG by lufthans@mastodon.social
2025-03-30T07:24:17Z
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@futurebird @mcc @stevegis_ssg would your researcher know enough to do everything in a container or VM?ImageMagick, R, python and LibreOffice ( spreadsheet ) would all be availableLikely easier for a reader to understand a VM running as an app than tunneling with containers for LibreOfficeIf she's blogging about a haunted jpeg, she should be doing it on Ghost :)