A tool for horizont correction for sphrical panorams from panoramic cameras: <a rel="nofollow" class="external text" href="https://github.com/trolleway/theta_tools">github.com/trolleway/theta_tools</a>
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/24415554@N04">Artem Svetlov</a> from Moscow, Russia
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/trolleway/31850859142/">Photo from Ricoh Theta S before horizont correction</a>