How to modify calibration json with own values

Tsjarly

Hi,

We are looking into our own tool to calibrate stereo cameras and we would like to verify it using the Oak-D pro camera. I found that it is possible to load/flash your own calibration data to the camera.
I was wondering whether there is a guide or documentation somewhere on how to produce or alter this json file to be compatible with the loading/flashing process.

Best,
Jarl

jakaskerl

Hi Tsjarly
It is possible, yes: https://docs.luxonis.com/projects/api/en/latest/samples/calibration/calibration_load/

If you run the calibration_dump.py (examples), you can modify the matrices/parameters inside the json, then reupload it. It should work no problem. Just make sure not to change the top most part.
for example:

 "batchName": "",
  "batchTime": 1661922568,
  "boardConf": "IR-C00M01-00",
  "boardCustom": "",
  "boardName": "DM9098",
  "boardOptions": 4,
  "boardRev": "R6M2E6",

this should stay the same, otherwise depthai might not properly boot the device anymore.

Let me know if you experience any issues.

Thanks,
Jaka