Add colmap to users.rst
Change-Id: I452a8c1dc6a3bc55734b2fc3a4002ff7939ba863
diff --git a/docs/source/users.rst b/docs/source/users.rst
index 33d7d75..7a84bf2 100644
--- a/docs/source/users.rst
+++ b/docs/source/users.rst
@@ -53,6 +53,14 @@
beamforming engine, called ASASIN , for estimating platform
kinematics.
+* `Colmap <https://github.com/colmap/colmap>`_ is a an open source
+ structure from motion library that makes heavy use of Ceres for
+ bundle adjustment with support for many camera models and for other
+ non-linear least-squares problems (relative, absolute pose
+ refinement, etc.)l;
+
+As you already know, I have been using Ceres (+PBA) for the past years and just wanted to thank you again for making my life a lot easier!
+
.. _bundle adjustment: http://en.wikipedia.org/wiki/Structure_from_motion
.. _Street View: http://youtu.be/z00ORu4bU-A
.. _PhotoTours: http://google-latlong.blogspot.com/2012/04/visit-global-landmarks-with-photo-tours.html
