ceres-solver: ceres-solver (Open Source Optimization Library) ceres-solver: ceres-solver: Ceres Solver is an open source C++ library for modeling and solving ceres-solver: large, complicated optimization problems. It can be used to solve ceres-solver: Non-linear Least Squares problems with bounds constraints and ceres-solver: general unconstrained optimization problems. It is a mature, ceres-solver: feature rich, and performant library that has been used in ceres-solver: production at Google. ceres-solver: ceres-solver: ceres-solver: