Is the model_aligner feature from COLMAP exposed in pycolmap?

[LauroLdas]

Hey guys,

This is more a question than a properly issue, but here it goes:

I'm interested in using the model_aligner (https://colmap.github.io/faq.html) feature from COLMAP, but I'm just found a way to use it using the command line interface from COLMAP. Is this exposed in the library? Can we get it exposed in the Python binds for pycolmap?

Thank you.

[Paul-Edouard Sarlin]

We don't yet have bindings for the model_aligner but we will in the future. For now you can use pycolmap.align_reconstrution_to_locations on HEAD (or pycolmap.Reconstruction.align_robust in v0.4.0) to emulate the alignment_type = ecef | enu behavior by first converting the GPS locations to ECEF/ENU.

[LauroLdas]

Thanks for your prompt response.
Is there any docs I can look for the input parameters of the pycolmap.align_reconstrution_to_locations function?

[Paul-Edouard Sarlin]

Check the code:

pycolmap/pycolmap/estimators/alignment.h

Lines 100 to 105 in bb17321

 "align_reconstrution_to_locations", 
 [](const Reconstruction& src, 
    const std::vector<std::string>& image_names, 
    const std::vector<Eigen::Vector3d>& locations, 
    const int min_common_images, 
    const RANSACOptions& ransac_options) { 

[LauroLdas]

hey @sarlinpe thank you for your precious help. I got it working perfectly with align_robust.

[messileonardo]

Hi there, @LauroLdas please could you provide an example on how did you use "align_robust" or "align_reconstrution_to_locations"? An example of how did you set the line of code would help me a lot!
Many thanks in advance!