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zivid / zivid-cpp-samples

Code samples for the usage of a Zivid 3D camera in C++
BSD 3-Clause "New" or "Revised" License
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Error: Failed to load calibration from the camera because the camera has not been calibrated #189

Closed danielcranston closed 2 years ago

danielcranston commented 2 years ago

Hello, thanks for the awesome product!

I actually ran into this problem when using the ROS driver, but it seems to be a non-ROS issue so figured I'd make an issue here.

Steps to reproduce:

  1. Get hold of a Zivid 2 with firmware corresponding to SDK version 2.5.0+19fa6891-1_amd64
  2. Have SDK / zivid_tools version 2.3.0+a08763f1-1_amd64 installed on your Ubuntu 18.04 machine
  3. run ZividFirmwareUpdater from your terminal to roll back the Zivid 2 firmware
  4. run ZividListCameras from your terminal

You should observe the following:

Found 1 camera(s).
Error: Failed to load calibration from the camera because the camera has not been calibrated

And indeed, the camera does not seem to be usable (e.g. ROS driver dies, supposedly when constructing the Zivid::Application). I've had a look around the Zivid Knowledge Based and github repositories, but haven't found anything related to this error.

When bumping SDK / zivid_tools version up to 2.5.0+19fa6891-1_amd64 the issue disappears.

Granted, the situation is a bit contrived (although this was a real situation we ran into just recently), and the simple answer is "just make sure to use the latest SDK version!". Still, maybe it can be of use to you :slightly_smiling_face:

So I guess my questions are

SatjaSivcev commented 2 years ago

Newer Zivid Two cameras come with Zivid Calibration Model 2.1.0. and are only compatible with SDK 2.4 or higher. More about ZCM can be found here: https://www.zivid.com/hubfs/Upgrade%20of%20Zivid%20Two%20calibration%20model.pdf?hsLang=en