Libmv: Enable explicit Schur complement matrix by default

Gives up to 2x speed up of camera solving process in average scene.
In the really huge one it might be slower, but that we need to investigate.

1 files changed, 2 insertions, 0 deletions

diff --git a/extern/libmv/libmv/simple_pipeline/bundle.cc b/extern/libmv/libmv/simple_pipeline/bundle.cc
index 09b55f34eef..e61650fb371 100644
--- a/extern/libmv/libmv/simple_pipeline/bundle.cc
+++ b/extern/libmv/libmv/simple_pipeline/bundle.cc
@@ -424,6 +424,7 @@ void EuclideanBundlePointsOnly(const DistortionModelType distortion_model,
   options.use_nonmonotonic_steps = true;
   options.preconditioner_type = ceres::SCHUR_JACOBI;
   options.linear_solver_type = ceres::ITERATIVE_SCHUR;
+  options.use_explicit_schur_complement = true;
   options.use_inner_iterations = true;
   options.max_num_iterations = 100;
 
@@ -593,6 +594,7 @@ void EuclideanBundleCommonIntrinsics(
   options.use_nonmonotonic_steps = true;
   options.preconditioner_type = ceres::SCHUR_JACOBI;
   options.linear_solver_type = ceres::ITERATIVE_SCHUR;
+  options.use_explicit_schur_complement = true;
   options.use_inner_iterations = true;
   options.max_num_iterations = 100;