Hi! Don't be shy. I found Kalman filter very very undervalued in usage, and it's one of the best way to greatly filter out stream of data.

Have you seen some VR / AR applications that apply some visual effects on human faces? Or something that visualizes hand position in space - based on some controllers? Have you seen these visualizations having a spontaneous jumps in position of theirs visualization? These are areas where Kalman filtration can be applied.

Good work!