"retrieval_path" indicates the path of the retrieval file, which stores the results of image retrieval. Currently, the image retrieval function is supported in XRLocalization. You can also generate the file through other retrieval methods. For specific file format, please refer to introduction.md.
as in https://github.com/openxrlab/xrsfm/blob/main/docs/zh/tutorial.md, i'm trying use covisibility-based matching, It seems this part of the code has not been implemented yet.