Calculating vertex colors very slow

[Kjellis85]

Im running an object scan which extracted 45M faces from 19,4 m dense cloud. Face extraction took 262 seconds  while colorize took about three times as long. While calculating vertex colors Metashape only utilized about 5% of CPU (24core ryzen, no core highly utilized) and nothing of GPU. Memory consumption minimal. Should this be the case?

Processor   AMD Ryzen Threadripper 3960X 24-Core Processor    3.79 GHz
Installed RAM   128 GB (128 GB usable)

Metashape 1.7.4 13028 64-bit

[Alexey Pasumansky]

Hello Kjellis85,

Do you observe the same in 1.7.5 release?

Also please specify, if there's rolling shutter option enabled for any sensors in the project or whether the optimization with the additional corrections has been performed?

[Kjellis85]

I skipped 1.7.5 and jumped right to 1.8 beta and did not observe the same problem, CPU utilization was ~100% during vertex colorization.