What is Tobii Pro Glasses 3 eye tracker and how does it work?

Tobii Pro Glasses 3 Full Setup

Introduction:

Tobii Pro Glasses 3 is a research grade eye tracker with which researchers can examine human visual attention in genuine, real world settings. Tobii Pro Glasses 3 allow users to walk freely while their eye movements are continuously captured, in contrast to traditional screen-based eye trackers that require participants to stay sitting in front of a display. This enables the study of natural behavior during tasks including driving, shopping, manufacturing, surgery, classroom instruction, sports training, airport navigation, and usability testing.

How Tobii Pro Glasses 3 Works:

  1. The device combines a Full HD scene camera installed on the spectacles with four tiny eye tracking sensors, two for each eye.

  2. Tobii's unique binocular eye tracking technology is combined with infrared light by the eye tracking sensors to pinpoint the participant's precise gaze.

  3. Simultaneously, the integrated scene camera records a first-person view of the participant's surroundings at 25 frames per second and 1920 × 1080 quality. This enables researchers to playback the tape and observe gaze behavior in the captured environment.

Patented Eye Tracking Technology:

  1. Tobii Pro Glasses 3 eye tracker uses a patented 3D eye model that continuously calculates each eye's position in relation to the glasses, in contrast to many wearable eye trackers.

  2. Even if the glasses move slightly during natural movement, this technology, along with automatic slippage compensation and automatic parallax correction, helps maintain accurate gaze measurement.

  3. Because of this, researchers spend more time gathering high-quality data in realistic circumstances and less time recalibrating individuals.

Research on real-world interactions using the wearable eye tracker Tobii Pro Glasses 3.

Eye Tracking Accuracy and Movement Sensors:

  1. The glasses typically capture binocular gaze data with an accuracy of 0.6° at 50 Hz or 100 Hz.

  2. Head movement is simultaneously recorded by integrated movement sensors, such as an accelerometer, gyroscope, and magnetometer.

  3. These synchronized data streams offer important context for comprehending participants' movements and interactions with their surroundings during challenging activities, in addition to where they look.

Data Analysis and Research Outputs:

  1. After recording, the data can be analyzed using Tobii Pro Lab or accessed through the Tobii Pro Glasses 3 API for custom workflows.

  2. Researchers can generate:

    • Heat Maps

    • Scan Paths

    • Areas of Interest (AOI) analyses

    • Fixation Statistics

    • Gaze Plots

    • Other Visualizations

These analyses transform raw eye movement data into meaningful behavioural insights.

Why Researchers Use Tobii Pro Glasses 3:

Tobii Pro Glasses 3 is one of the most popular wearable eye trackers in academic and industrial research worldwide thanks to its portability, scientific accuracy, and sophisticated analytic tools.

If you want to learn more about eye tracking technologies connect us on www.tidentech.com or feel free to ask us on parag@tidentech.com or tidentech@gmail.com call us on +91 9987442274