What is Reddit's opinion of Fiji?

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Maybe Fiji? https://fiji.sc/

Like ImageJ itself, Fiji is an open source project hosted in Git version control repositories, with access to the source code of all internals, libraries and plugins, easing the development and scripting of plugins.

Fiji is licensed under the GNU General Public License. It builds on top of the ImageJ2 core, which is licensed under the permissive BSD 2-clause license. Plugins and other components have their own licenses.

I'm gonna piggyback off of this and recommend FIJI (Fiji Is Just ImageJ): https://fiji.sc/

It comes with some of the most standard tools (and a great recursive acronym) at only the expense of a small amount of menu clutter.

Nimm dir mal die kostenlose Bildanalysesoftware imageJ beziehungsweise die Pluginsammlung fiJi und schau dir die Bilder nach FFt an.
Wenn es funktioniert erhoffe ich hier Rückmeldung, bei Problemen schreib mir eine PN.
Ich verstehe nicht genau, warum mich hier jemand auf 0 punkte gedownvoted hat.
An meiner Uni wird imagej für alles mögliche verwendet und bietet einen schnellen fft an. Tutorials gibt es auch zu hauf, aber wie man von dort weiter verfährt weiß ich leider nicht.
Edit 2: Wenn du nach autofocus fft suchst findest du auch einige Ansätze.

Channels and layers are rather fundamental for an image manipulation software. But I guess you only want to crop?

If you just need cropping and selection one option can be a simple opencv (Python or c++) script that creates a selection window with some text boxes for precise definition. You have similar image selection and processing options with Julia and octave. Not sure if you'd call using a different image libraries + scripting language suckless.

See: https://www.learnopencv.com/how-to-select-a-bounding-box-roi-in-opencv-cpp-python/

https://github.com/JuliaImages/ImageView.jl#programmatic-usage

Other softwares you cab try depending on what features you need:

perhaps ristretto or nomacs can be an alternative. Also may I suggest Fiji/imagej (https://fiji.sc/)

No worries on not being tech-savvy, this program is pretty easy to use. This is a link to where to download the program I was talking about, it's used extensively in the medical imaging and microscopy communities: https://fiji.sc/.

Once you get it installed, use it to open an image on your computer. You'll see that, in the top left of the image window, it tells you the length and width of the image in pixels. Also, you can take a high-red image and do the menu command Image -> Adjust -> Size and type in the new width and height that you want, as shown here: https://m.youtube.com/watch%3Fv%3Db3sM1EE5dZE&ved=2ahUKEwiczNvy-cfqAhXuITQIHTfSAMIQFjACegQICxAO&usg=AOvVaw0v-Yta0AQQ-51YUi2vxrEE

Not really Python but have you considered ImageJ? It will have this functionality. It also comes with a Jython interpreter, so you can mix the image analysis macros/scripts with Python (version ~2.7).

Oui je t'ai mis le lien dans le message du dessus :). Il est libre/gratuit. imageJ est trouvable ici, et Fiji (Une version d'imageJ avec tous les plugins, donc très pratique) est ici.

Ok, c'est vrai qu'il faut un minimum d'investissement peut être pas rentabilisable sur un projet unique.

Une autre solution serait d'utiliser un logiciel libre comme imageJ (ou Fiji, imageJ avec des modules additionnels). Il y a un langage macro très simple et tu peux apprendre les commandes en les cliquant dans les menus.

Au plus simple (sans aucune ligne de code), tu peux même charger toutes tes images dans une "pile 3D" (file->import->image sequence), et cliquer sur ton traitement qui s'appliquera à toutes tes images.

édité : pile3D->"pile 3D"