Open barney2074 opened 2 years ago
Thank @barney2074 for your tips. When do you take pictures from different angles of the object you want to reconstruct, how do you get camera information, including x, y coordinates?
That's what Colmap does- it reconstructs the scene by identifying common points in photos and calculating the camera positions and parameters
Refer:
@barney2074 Have you tested on outdoor/unbounded forward-facing images? I always get black ghosts on the far backgrounds.
Hi @Harper714
Yes, sometimes get that too- not exactly sure what causes it- but I tend to crop out the far distance-. Recent changes in I-NGP means it's easier to render once cropped
Hi @Harper714
Yes, sometimes get that too- not exactly sure what causes it- but I tend to crop out the far distance-. Recent changes in I-NGP means it's easier to render once cropped
Thanks for sharing. Could you kindly elaborate on what you mean by recent changes in ngp?
@Harper714 A change was made which retains crop settings in the snapshot
https://github.com/NVlabs/instant-ngp/commit/54aba7cfbeaf6a60f29469a9938485bebeba24c3 https://github.com/NVlabs/instant-ngp/issues/873#issuecomment-1296292395
Previously- the crop from interactive session was not saved in a snapshot- so a render would show everything
@barney2074
Many thanks. I will also try it.
Hi @barney2074, excellent tips. I have a question: What type, model, or brand of camera can you recommend to take good photos or videos to use them in NeRF for training?
HI @jdiazram
I don't think there is a specific camera- just good quality photos. I would have said a 'proper' camera with a decent lens (like a DSLR)- but to be honest, I've got pretty good results with both an iPhone (I've got an iPhone 12) or a GoPro (Hero 11) I'd say image quality is more important that ultra-high resolution- big images will slow down training, or you might run out of memory depending on GPU I'd also suggest looking at 'nerfstudio'- it's a bit easeir to use than instant-ngp, plus also works with LIDAR enabled IOS devices using Polycam app
Based on some tips Jonathan Stevens kindly provided to me for taking photos to get good quality NeRFs, and from my own experience, I've put together these tips.
Feel free to add or disagree
To be decided:
NeRF Gallery: https://youtu.be/aMRx4WvKXpc
Andrew