Add power series expansion preconditioner Implementation of "Power Bundle Adjustment for Large-Scale 3D Reconstruction" by Weber et. al. added in the form of preconditioner. Change-Id: Ie85526a5fc46f74256f6dfe9173c3571f7160f3a
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.