Tracked mesh becomes bad since 2k steps

[essen900718]

Dear authors,

Thanks for your work!
We've been encountered a problem with the tracker specifically the tracked mesh just becomes terribly morphed after 2k steps.
Here's the steps we did for capturing our own dataset:

1. set up 7 cameras, do the calibration, and capturing concurrently
2. processing step 1 without background and without color correction
   • we have checked the alpha_maps and there're no problems
3. processing step 2 - tracking, and the problem occurs

I may append some images for illustration.

--- Step 999 --- still okay

--- Step 1499 --- also okay

--- Step 1999 --- already morphed

--- afterwards --- continually worse

We hope to receive your comments and instructions to get through this problem! Thank you so much.

Best regards,
Isadora

[ShenhanQian]

Hi Isadora, thanks for sharing your results.

The main problem is probably a too-high regularization on the texture map. The default value is 1e5 for NeRSemble. Since you only have 7 views, about half of 16 for NeRSemble, you may try a lower value by passing --w.reg_tex_tv 3e4 or 1e4.

[essen900718]

Hi Shenhan,
Thanks a lot for your reply, it has helped me a lot!