can i get translation distance through a single image pair?

[hakanmuhammad]

In your paper, it is mentioned that the camera center can be acquired by minimizing the sum of the distances of multiple image pairs. Then, in the routine of relative pose estimation, is it possible to obtain not only the direction but also the distance of the camera displacement through a single image pair?

[siyandong]

No. Reloc3r's translation is supervised with direction only.

To obtain the translation distance, you need at least two pairs, and the camera centers of the query and databases cannot be co-linear.