Home › Forums › Software Development › Head pose via Stream API does not work
Tagged: 4C, Head pose, stream api
- This topic has 3 replies, 2 voices, and was last updated 1 year, 5 months ago by Grant [Tobii].
- 17/09/2021 at 22:48 #21077Raphael MengesParticipant
I want to use the Tobii Stream Engine SDK to retrieve gaze data and head pose in real-time to implement hands-free interactions in my application. I use a Tobii 4C device for development (Tobii core software 188.8.131.52, Firmware 2.27.0-40146848). I have compiled the C/C++ example code from the official documentation, specifically the code as listed on pages 32 and 33. When printing the error values throughout the excecution, all seem to be
zero(which should be fine) but the validity flags in the callback are also
zero(which seems to be bad).
Strangly, gaze data retrieval is working. Even more strangely, I remember an old project of mine with Tobii Core SDK to report about head pose a few month ago, but now it also fails to retrieve the head pose. Is my device somehow broken? If so, I find it strange that it still reports gaze data correctly.
Thanks in advance for any hints!28/09/2021 at 10:42 #21126Grant [Tobii]Keymaster
Hi @unrealer2, thanks for getting in touch. This may be related to a recent issue with the Tobii Experience App.
Please download the latest Beta version for the 4C at the link below
And let us know if the issue persists. Best Wishes.02/10/2021 at 23:13 #21160Raphael MengesParticipant
Hello @grant-rogers. Replacing the Tobii Core Software with the Tobii Experience Software actually solved the issue. My 4C device reports the head pose again! Thank you for the suggestion.
Nevertheless, I find it strange that such functionality breaks in software that apparently was not changed or updated. Any idea why?04/10/2021 at 11:10 #21163Grant [Tobii]Keymaster
Glad to hear it Raphael! Yes sometimes unexpected things happen in software development, we will try to ensure this particular issue does not surface again!
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