Usage of the reconstruct_from_prior Function

[omose-maas]

Hi,

First of all, thank you for the amazing code and all your hard work on this project!

I have a question regarding the reconstruct_from_prior function. This function is not documented, and although I have read through the code, I am not confident in my understanding.

Is my understanding correct that this function reads an existing reconstruction and recalculates the points?
In what scenarios would recalculating the points be necessary?

My primary goal is to add new images to an existing reconstruction as mentioned in the this PR178
If there is an existing method for this, I would greatly appreciate your guidance.

Thank you for your time and assistance!

[oaa3wf]

For adding more images to an existing reconstruction, this function:

OpenSfM/opensfm/reconstruction.py

Line 1386 in 1106198

def grow_reconstruction(

,
and this file: https://github.com/mapillary/OpenSfM/blob/main/opensfm/actions/extend_reconstruction.py
may be of interest to you.