Home › Forums › Software Development › InteractionLib, gaze detection is always slightly incorrect
- This topic has 5 replies, 4 voices, and was last updated 1 year, 7 months ago by Grant [Tobii].
- 02/08/2020 at 10:24 #18561RomanParticipant
Hi! I’m facing this issue with both the InteractionLib WPF Sample App and my own app built with InteractionLib. Gaze detection seems to be incorrect.
Important: The Eye Tracker detects my gaze correctly! I have recorded a screencast to illustrate that. I have both Tobii Experience running and the Sample App at the same time. Tobii Experience displays a bubble that shows my actual gaze position, and it’s very correct. At the same time the application with Gaze Aware elements triggers their gaze events incorrectly, it seems like it’s got my gaze position shifted from its actual position. The WPF Sample App is straight from the documentation, unchanged, as it is. The symptoms are always same regardless of the window position and restarting the app or the whole machine.
Please see my screencast with a clear demonstration of the problem:
Windows 10 Home
Tobii Eye Tracker 5
Microsoft Visual Studio 2019 Community
InteractionLib WPF SampleApp straight from the documentation
Any suggestions? Appreciate any help!03/08/2020 at 16:28 #18569Hongbin ZouParticipant
Dpi problem?03/08/2020 at 17:34 #18570RomanParticipant
@dragonus, thank you! First I didn’t know where to look for any DPI settings, but then I found that in my Windows display settings I had “scale and layout” set to 125% by default. I didn’t know that. I’ve set it to 100% and the gaze detection is now razor sharp! Cool05/08/2020 at 15:15 #18582Grant [Tobii]Keymaster
Thanks Roman for bringing this bug to our attention. Confirmed that for high DPI settings, there can be gaze offset within the Interation Library API.
Hopefully the workaround is suitable for you until we can patch this. Thanks for your patience.26/08/2021 at 22:28 #20997GishanParticipant
I’m currently having the same issue with the latest version of the InteractionLib.
Is there a solution for this?
I can’t simply change the DPI of my monitor as everything gets way too small.30/08/2021 at 13:49 #21009Grant [Tobii]Keymaster
Hi @gishan, thanks for getting in touch. Can you confirm if this issue occurs when you build the code from scratch or are you running the binary directly? Could you also let us know if you are a corporate client or an individual? Please also let us know the version of SDK you are running.
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