updated unit quaternion rotation Change-Id: I3e5a2ca8e19c1d66437ac16d615867e2a12f8e60
Ceres Solver is an open source C++ library for modeling and solving large, complicated optimization problems. It is a feature rich, mature and performant library which has been used in production at Google since 2010. Ceres Solver can solve two kinds of problems.
Please see ceres-solver.org for more information.