[visionlist] PupilEXT: New open-source pupillometry platform

Babak Zandi zandi at lichttechnik.tu-darmstadt.de
Wed Jul 21 05:45:16 -04 2021

I am excited to announce the release of PupilEXT, a cross-platform (Mac, Win, Linux) open-source pupillometry framework suited for high-resolution pupil diameter measurements with machine vision cameras in real-time.

A detailed manual on how to set up the system is available at the project’s GitHub repository:


The paper about the proposed pupillometry system is available here:


Furthermore, we provide video tutorials that walk through the interface of PupilEXT:

Tutorial 1/3 (Stereo camera recording): https://vimeo.com/564556788

Tutorial 2/3 (Single camera recording): https://vimeo.com/564776313

Tutorial 3/3 (External image analysis): https://vimeo.com/564778587

PupilEXT features a selection of six state-of-the-art open-source pupil detection algorithms, a measurement accuracy validation pipeline, stereo (mono) camera calibration, offline pupillometry, all combined in a single framework.

Babak Zandi,

on behalf of the whole team.

Technical University of Darmstadt
Department of Electrical Engineering and Information Technology
Laboratory of Lighting Technology
Hochschulstr. 4a, D-64289 Darmstadt, Germany

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