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We now have a first public test release of nip4, a rewrite of nip2 for thegtk4 UI toolkit. If you have some time to try it, any feedback wouldbe very welcome:

https://github.com/jcupitt/nip4/releases

nip2 is a GUI for thelibvips image processinglibrary. It's a little like a spreadsheet:you create a set of formula connecting your objects together, and on a changenip2 will recalculate. This makes it convenient for developing image processingsystems since you can watch pixels change as you adjust your equations.

Because nip2 uses libvips as the image processing engine it can handle verylarge images and only needs a little memory. It scales to fairly complexworkflows: I've used it to develop systems with more than 10,000 cells,analyzing images of many tens of gigabytes. It has a batch mode, so youcan run any image processing system you develop from the command-line andwithout a GUI.

You can probably install nip2 via your package manager. ForWindows and OS X, you can download a binary from thenip2 releasespage. If you have to build fromsource, see the section below.

nip2 comes with a 50-page manual --- press F1 or Help / Contents in theprogram to view it.

In the nip2 directory you should just be able to do the usual:

./configuremakesudo make install

By default this will install files to/usr/local. Check the summary at theend ofconfigure and make sure you have all of the features you want.

If you downloaded from GIT you'll need:

./autogen.sh

first to build the configure system.

nip2 needs vips, gtk2 and libxml2 at runtime and flex/bison at compile time.If you have fftw3, gsl, goffice, libgvc you get extra features.

Rebuild snap with:

snapcraft cleanbuild

Though it's done automatically on a push.