how to adjust the parameters when do the offline calibration

[Warsin]

hi,
when i do the offline mode, i do not konw how to adjust the parameters to make the result better, some times when i adjust it(eg: --nr-active-frames 200 --keyframe-spacing 100 ) , the system break,can you tell me what are the parameters mean more　detailed and how to adjust it？　And i found the result has no differences between the offline and online mode,is it right?

[NikolausDemmel]

Sorry, beyond the help text and the code there is not much documentation unfortunately. Your best bet is to have a quick look in the code to see how each parameter is used.

In particular, nr-active-frames is the number of frames for which we estimate calibration at a time. keyframe-spacing is the spacing between keyframes (part of the backend optimization), so you shouldn't pick that too large to ensure enough overlap.

If you have more specific questions @PaulBergmann might be able to help.

There is a difference between online and batch optimization as also illustrated in the paper.

[NikolausDemmel]

PS: If you have a specific scenario where it crashes/fails, it would be best if you open a separate issue detailing how to reproduce the failure.