Work

Photometrically optimized event-based stereo 3D measurements

Year: 2024

Type: article

Abstract: Event cameras only report changes in brightness when thresholds in individual pixels relative to previous levels are crossed. They output sparse streams of events that quantify these changes spatially and temporally. We have developed a measurement system using two event cameras in a stereo configuration with a specialized projector for 3D measurements of static objects. We show that optimal contrast in the structured illumination yields high-fidelity measurements, reaching 3D root-mean-square deviations of 0.6 mm (≈0.3% of the measurement volume’s diagonal). This work opens up the possibility of precise event-based, highly dynamic 4D measurements in the near future.

Source: Optics Express

DOI: 10.1364/oe.541659

Authors: Christoph Freitag, Stefan Heist, Andreas Stark, Peter Kühmstedt, Gunther Notni, Christian Franke

Institutions: Technische Universität Ilmenau, Friedrich Schiller University Jena

Language: English

Topic: Optical measurement and interference techniques

Subfield: Computer Vision and Pattern Recognition

Field: Computer Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funders: Bundesministerium für Wirtschaft und Klimaschutz, Deutsche Forschungsgemeinschaft, Bundesministerium für Bildung und Forschung