Open Lab

OL05 Subtle visual guidance in Virtual Reality; Grogorick & Magnor (2020)


Augmented Reality (AR) using a Head-Mounted Display (HMD) such as Microsoft HoloLens 2 has become a popular guidance platform for industrial work tasks: operators get visual support depending on where they are in the assembly process. We are ourselves involved in research on this topic. However, using explicit visual information such as arrows or pictures on top of the real world can be cognitively demanding and potentially not safe for the user because it obstructs his or her view. Therefore we consider subtle (barely noticeable) guidance as an option.

One problem with subtle visual guidance on AR platforms is the need for adapting intensity of subtle stimuli due to changing light conditions. This project will therefore experiment with stimuli design on VR platform instead, where light intensity can be kept constant.

Aim/goal/research question

The aim of this work is to simulate AR subtle visual guidance on a VR platform. The platform is a state-of-the-art head-mounted VR headset with embedded eye tracker (probably Varjo VR-1, XR-3, Aero or HTC Vive Pro with eye tracking add-on).

Recommended past experience/interest

Unreal, Unity, C#, Virtual Reality, Human-Computer Interaction

Related Work

Steve Grogorick, Michael Stengel, Elmar Eisemann, and Marcus Magnor. 2017. Subtle gaze guidance for immersive environments. In Proceedings of the ACM Symposium on Applied Perception (SAP ’17). Association for Computing Machinery, New York, NY, USA, Article 4, 1–7. DOI:

Other comments

The project is a continuation of a previously performed thesis project and also part of the bigger Nudging AI+AR glasses project..