GIMP Plug-In set for 360° panoramas

This plugin set contain 4 plugins helpful in 360° equirectangular panorama

  • fill_zenith_nadir - fills transparent areas on the top and the bottom of the generated panorama with a gradient that smoothly connects to the neighbour pixels
  • panorama_to_zenith_nadir - converts panorama to editable form of zenith and nadir areas. This allows for easy editing, eg. patching, filling, placing a logo
  • zenith_nadir_to_panorama - converts back the editable zenith and nadir to panorama projection
  • set_google_plus_metadata - attach metadata needed to publish panorama on Google+

The panorama_to_zenith_nadir and zenith_nadir_to_panorama plugins are inspired and based on algorithms published by Seb Przd on http://theseblog.free.fr/2007/08/edit-nadir-and-zenith-of.php. These plugins were developed as native, to speed-up their execution.

The fill_zenith_nadir is my own idea, that appeared after unsuccessful hours of unfair fight with high resolution panoramas with huge empty areas on zenith and nadir.

The last plugin - set_google_plus_metadata was obvious complement that enables easy publication of low-res panoramas.

Example of usage you can fing in the [Tutorial].


The plugins were developed and tested on Ubuntu 12.10 and Gimp 2.8. It is possible that Gimp 2.8 is needed for the set_google_plus_metadata. Other plugins should work with older releases.

set_google_plus_metadata plugin requires libexempi library.


In normal cases, when Gimp and libexempi development files are available, it should be enough to issue following commands:

make install


Seb Przd for his post with algorithms.
Michael Natterer, Sven Neumann, Dave Neary and other Gimp developers for plugin template and tutorial.

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