activity
20232026
most citedHow Suboptimal is Training rPPG Models with Videos and Targets from Different Body Sites?

1 citations · 1 across the 7 of their papers we have counts for

collaborators

7 papers

cs.CV2026

SkillSpotter: Pose-Aware Multi-View Skilled Action Detection and Grading in Ego-Exo Videos

Björn Braun, Christian Holz

To enable personalized, real-time coaching using Augmented Reality glasses or fixed camera setups in domains such as sports, cooking, or music, a system must understand not just wh…

cs.CV2025

egoEMOTION: Egocentric Vision and Physiological Signals for Emotion and Personality Recognition in Real-World Tasks

Matthias Jammot, Björn Braun, Paul Streli +2

Understanding affect is central to anticipating human behavior, yet current egocentric vision benchmarks largely ignore the person's emotional states that shape their decisions and…

cs.CV2025

egoPPG: Heart Rate Estimation from Eye-Tracking Cameras in Egocentric Systems to Benefit Downstream Vision Tasks

Björn Braun, Rayan Armani, Manuel Meier +2

Egocentric vision systems aim to understand the spatial surroundings and the wearer's behavior inside it, including motions, activities, and interactions. We argue that egocentric…

q-bio.QM2024

Nightbeat: Heart Rate Estimation From a Wrist-Worn Accelerometer During Sleep

Max Moebus, Lars Hauptmann, Nicolas Kopp +3

Today's fitness bands and smartwatches typically track heart rates (HR) using optical sensors. Large behavioral studies such as the UK Biobank use activity trackers without such op…

cs.CV2024

SympCam: Remote Optical Measurement of Sympathetic Arousal

Björn Braun, Daniel McDuff, Tadas Baltrusaitis +3

Recent work has shown that a person's sympathetic arousal can be estimated from facial videos alone using basic signal processing. This opens up new possibilities in the field of t…

eess.IV2024★ 1 cited

How Suboptimal is Training rPPG Models with Videos and Targets from Different Body Sites?

Björn Braun, Daniel McDuff, Christian Holz

Remote camera measurement of the blood volume pulse via photoplethysmography (rPPG) is a compelling technology for scalable, low-cost, and accessible assessment of cardiovascular i…

cs.CV2023

Video-based sympathetic arousal assessment via peripheral blood flow estimation

Bjoern Braun, Daniel McDuff, Tadas Baltrusaitis +1

Electrodermal activity (EDA) is considered a standard marker of sympathetic activity. However, traditional EDA measurement requires electrodes in steady contact with the skin. Can…