Is ImageMetaData.sensorExpInfo.exposureTime a Measured Value or a Configured Value?

Autonomous Vehicles DRIVE AGX Orin DRIVE AGX Orin General
1

DRIVE OS Version: 6.0.10

I have a question about ImageMetaData.sensorExpInfo.exposureTime described in the following document:

Observations

  • Using nvsipl_camera on Drive OS 6.0.10.0, I observed camera frames for several seconds and found that exposureTime had exactly the same value for every frame at 1 us resolution.
  • This behavior suggests that the field may represent the exposure time configured on the sensor, rather than a measured per-frame value.
  • However, when I performed the same observation on Drive OS 6.0.8.1, I saw fluctuations of approximately 100 us.
  • Because of this difference, I am wondering whether the field might instead represent a measured exposure time for each frame.

Questions

  1. Does ImageMetaData.sensorExpInfo.exposureTime represent the measured exposure time, or the exposure time configured on the sensor?
  2. If it is a measured value, were there any known changes or improvements in measurement accuracy or stability between Drive OS 6.0.8.1 and Drive OS 6.0.10.0?

Related Question

I also have a similar question about dwImageMetaData.sensorStatistics.exposureDurationUs in the DriveWorks API.

Does this value represent a measured exposure duration, or a configured value?

6

ImageMetaData.sensorExpInfo.exposureTime represents configured on the sensor

Yes. dwImageMetaData.sensorStatistics.exposureDurationUs is also configured value.

7

Dear @SivaRamaKrishnaNV
Thank you.
I close this thread.