Visualize / export refined camera poses

[andrearama]

Is your feature request related to a problem? Please describe. When using Nerfacto the camera poses are being refined, which is great since in many real-world applications the poses are inaccurate. However, I do not see an easy solution to either visualize or save the refined camera poses. I might for example need this for later uses. One example being rendering a video using the estimated camera poses

Describe the solution you'd like Either a flag or a button on the GUI to save the estimated poses.

Describe alternatives you've considered Save them from within the pipeline myself, but it gets a bit messy

[akristoffersen]

Hi! This is a great suggestion. I'll try to get something out on this in the coming week.

Saving the poses should be relatively straight forward, but adding the pose movement into the visualizer might be a bit more complicated so I can work on that next.

[mackopes]

@akristoffersen Do you think it would make sense to export the optimised camera poses as part of the ns-export script?

[mackopes]

I implemented the camera exporter in this PR