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Hello,
We have recently purchased four Femto Bolt sensors and are using them in combination with the Azure Body Tracking SDK in Unity for a scientific biomechanics prototype.
We are encountering a persistent issue with the skeleton model alignment:
- Even when the user is standing upright and floor detection is enabled, the entire skeleton appears to be leaning forward (approx. 20–30 degrees).
- We have verified that this is not caused by Unity rigging, as the same issue appears in the raw joint data.
- Based on our internal visualizations, the ankle/foot joints are consistently misdetected, resulting in a shifted base plane.
We are attaching screenshots from our internal tool where:
- Green dots represent correctly detected joints.
- Red dots highlight joints with errors – mainly visible at the foot/ankle level.
Questions:
- Is this a known issue with the Azure SDK when used with Femto Bolt?
- Is there any recommended calibration procedure or SDK setting that could help correct this?
- Are there updates or alternative drivers you would recommend?
- Is it possible to override the ankle joint detection to improve alignment?
We are developing this prototype for scientific validation and would greatly appreciate your guidance in resolving this issue.
Best regards,
Oskar
