Can't run pipeline with sequential mode.

[DubovitskyDenis]

I have database, which I got after colmap reconstruction(from original colmap). What could have gone wrong?

[AIBluefisher]

How do you build the database, by COLMAP or by DAGSfM? Since DAGSfM stores relative camera poses instead of the essential/fundamental/homography matrices, the database built by COLMAP is not compatible with DAGSfM.

[DubovitskyDenis]

I built the database by COLMAP. Now I see, that it was a bad idea.
What should I do to run DAGSfM correctly? Should I run 'extract_feature.in' and 'exhaustive_matcher.in' after that?

[AIBluefisher]

The relative poses are obtained during feature matching. All you need to do is to rebuild a database. Actually, you can follow the pipeline in this script but replace colmap's original mapper at lines 34-39 with the distributed mapper.

[DubovitskyDenis]

Hello again!
I have a problem when starting colmap distributed_mapper command. I created database by DAFSfM. The third command from the script started working and continued to carry out the reconstruction, but at some point an error occurred.
It's hard for me to understand what could be the problem.

[AIBluefisher]

I'm not sure what causes the crash. You may need to debug that piece of code. But you can simply set retriangulate to false to avoid re-triangulation after merging:

  if (options_.retriangulate) {
    LOG(INFO) << "Triangulating for separators...";
    timer.Start();
    Triangulate();
    timer.Pause();
    triangulate_time = timer.ElapsedSeconds();
  }

Then, you can rerun the sfm_aligner to merge all the partitions. The command can be like:

colmap sfm_aligner --reconstructions_path {YOUR_PARTITION_PATH}