Interpretation of data

[Carlos Pozo]

Greetings,

I have some doubts regarding the data output in Unity Tobii SDK, please your help:

– In the Gaze data there are 2 eye data. What is the difference between the left and right data with the “original gaze” left and right data?.

– The validity field changes sometimes with the value “true” or “valid” so I don’t understand this little differences.

– What´s the difference between GazePointInUserCoordinates and GazeOriginInUserCoordinates?

Finally, is there any documentation regarding the type of data ?

Data:

<GazeData TimeStamp=”2099172947″>
<Left>
<GazeOriginInTrackBoxCoordinates Value=”(0.60898540, 0.52333770, 0.41998410)” Valid=”True” />
<GazeOriginInUserCoordinates Value=”(-44.39736000, -6.83128500, 608.33590000)” Valid=”True” />
<GazePointInUserCoordinates Value=”(-169.98470000, 12.38684000, 15.99999000)” Valid=”True” />
<GazePointOnDisplayArea Value=”(0.14259160, 0.97863890)” Valid=”True” />
<GazeRayScreen Origin=”(-0.24515810, 0.83419480, -9.70000000)” Direction=”(-0.58174440, -0.39344520, 0.71188080)” Valid=”True” />
<PupilDiameter Value=”3.60009800″ Valid=”True” />
</Left>
<Right>
<GazeOriginInTrackBoxCoordinates Value=”(0.46500800, 0.53362440, 0.41307470)” Valid=”True” />
<GazeOriginInUserCoordinates Value=”(16.67801000, -9.93120900, 606.22670000)” Valid=”True” />
<GazePointInUserCoordinates Value=”(-184.54880000, 23.34702000, 16.00000000)” Valid=”True” />
<GazePointOnDisplayArea Value=”(0.11214780, 0.94198220)” Valid=”True” />
<GazeRayScreen Origin=”(-0.26604050, 0.84689310, -9.70000000)” Direction=”(-0.61984090, -0.35671990, 0.69896220)” Valid=”True” />
<PupilDiameter Value=”3.90885900″ Valid=”True” />
</Right>
<CombinedGazeRayScreen Origin=”(-0.25559930, 0.84054390, -9.70000000)” Direction=”(-0.60119000, -0.37505340, 0.70562420)” Valid=”True” />
<OriginalGaze DeviceTimeStamp=”1150634333″ SystemTimeStamp=”2099172947″>
<LeftEye>
<GazeOrigin PositionInTrackBoxCoordinates=”(0.60898540, 0.52333770, 0.41998410)” Validity=”Valid” />
<GazeOrigin PositionInUserCoordinates=”(-44.39736000, -6.83128500, 608.33590000)” Validity=”Valid” />
<GazePoint PositionInUserCoordinates=”(-169.98470000, 12.38684000, 15.99999000)” Validity=”Valid” />
<GazePoint PositionOnDisplayArea=”(0.14259160, 0.97863890)” Validity=”Valid” />
<Pupil PupilDiameter=”3.60009800″ Validity=”Valid” />
</LeftEye>
<RightEye>
<GazeOrigin PositionInTrackBoxCoordinates=”(0.46500800, 0.53362440, 0.41307470)” Validity=”Valid” />
<GazeOrigin PositionInUserCoordinates=”(16.67801000, -9.93120900, 606.22670000)” Validity=”Valid” />
<GazePoint PositionInUserCoordinates=”(-184.54880000, 23.34702000, 16.00000000)” Validity=”Valid” />
<GazePoint PositionOnDisplayArea=”(0.11214780, 0.94198220)” Validity=”Valid” />
<Pupil PupilDiameter=”3.90885900″ Validity=”Valid” />
</RightEye>
</OriginalGaze>
</GazeData>

Thank you.

[Grant [Tobii]]

Hi @cpozo, thanks for your query. Could you kindly specify which of our Unity SDK you are currently working with:

1) developer.tobiipro.com/unity/

2) developer.tobii.com/pc-gaming/unity-sdk/getting-started/

3) vr.tobii.com/sdk/develop/unity/

Thereafter, we should be best placed to respond to your query. Best Wishes.

[Carlos Pozo]

Hello and thank you for the response. Is the latest Unity Tobii SDK version. Im trying to create a Gaze Points Map in a 3D scene inside Unity but I can’t get the world coordinate of the object while exporting the xml data of the demo scene.

[Grant [Tobii]]

Hi @cpozo, thanks for the clarification. As you are an owner of a Tobii Pro device, you are entitled to premium support for your product.

Please kindly get in touch with the Tobii pro support team @ https://www.tobiipro.com/contact/support/ and a Pro SDK specialist with be happy to assist you with your query. Best Wishes.

[Author]

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