What are the mapper parameter values used by the automatic_reconstructor method?

[Wayne Cochran]

I am trying to mimic the behavior of the following automatic reconstruction using feature extraction, matching, and a mapper:

colmap automatic_reconstructor \

    --workspace_path $DATASET_PATH \

    --image_path $DATASET_PATH/images \

    --quality extreme 

First thing I figured out is that Domain Size Pooling is used so I made sure to enable that:

colmap feature_extractor \

   --database_path $DATABASE_PATH \

   --image_path $DATASET_PATH/images \

   --SiftExtraction.domain_size_pooling 1 \

   --SiftExtraction.estimate_affine_shape 1

Then I proceeded with this:

colmap exhaustive_matcher \

   --database_path $DATABASE_PATH

colmap mapper \

   --database_path $DATABASE_PATH \

   --image_path $DATASET_PATH/images \

   --output_path $MODEL_PATH \

   --Mapper.ba_local_max_num_iterations 40 \

   --Mapper.ba_global_max_num_iterations 100 \

   --Mapper.ba_local_max_refinements 3 \

   --Mapper.ba_global_max_refinements 5

My initial DSP-SIFT matches are eqivalent, but I do not get the same two-view geometry matches as with the automatic reconstruction. What are the mapper parameter values used by automatic reconstruction for extreme quality? Is the automatic reconstructor doing something else that I am not?

P.S. I have no idea how to insert code snippets with this editing environment.

[Revisionarian]

You appear to be missing the "--SiftMatching.guided_matching 1" parameter setting for exhaustive_matcher.

[Wayne Cochran]

Yes -- thank you....

void OptionManager::ModifyForExtremeQuality() {

  // Most of the options are set to extreme quality by default.                                          

  sift_extraction->estimate_affine_shape = true;

  sift_extraction->domain_size_pooling = true;

  sift_matching->guided_matching = true;

  mapper->ba_local_max_num_iterations = 40;

  mapper->ba_local_max_refinements = 3;

  mapper->ba_global_max_num_iterations = 100;