giv is a cross platform image and hierarchical vector viewer based. It was designed especially for scientific vision and computational geometry and has support for drawing vector graphics on top of the image.
Giv is released under the GNU GENERAL PUBLIC LICENSE, Version 2. See COPYING for details.
See: http://giv.sourceforge.net/giv/index.html
See also NEWS
Development takes place on github at http://github.com/dov/giv . Open your issues and send your pull requests there.
See: INSTALL.md
See: https://github.com/dov/giv/discussions
You are welcome there for all questions on giv