Emotion Values Out of Range

Nuitrack SDK Reporting Software Issues
1

I’m using Nuitrack to detect face expressions.
Following the documentation I’m successfully getting the emotions values - angry, neutral, surprise, happy.

According to the documentation each emotion value is a positive number within the range of 0-1.
However sometimes I’m getting values higher than 1 for a certain emotions.

Here are examples of data I got:
"emotion": {"neutral": 0.0010028329, "angry": 3.0950923, "surprise": 0.000100158504, "happy": 0.9988661}

or for example

"emotion": {"neutral": 6.392278, "angry": 0.00127006834, "surprise": 0.998580754, "happy": 8.521814}

2

Hi yurikleb,

Is it raw output of the GetInstancesJson method?

3

Yup, exactly.
I’m using the code provided in the Unity examples.

4

Sorry for a late reply.

We’ve checked this issue with Nuitrack 0.27.0+Unity 2017.4 and Nuitrack 0.29.0+Unity 2018.3.10. In our case, values are within the range of [0; 1].

Try to run the FaceTracking scene from our Unity package and check the values. To display the values, you can edit FaceController.cs: add the line:

Debug.Log(emotionDict[EmotionType.happy]);

in the end of the SetFace method. As a result, you’ll see the value of happy in the log (if necessary, you can check other emotions).