Hand-guided qualitative deflectometry with a mobile device

Florian Willomitzer, Chia Kai Yeh, Vikas Gupta, William Spies, Florian Schiffers, Aggelos Katsaggelos, Marc Walton, Oliver Cossairt

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


We introduce a system that exploits the screen and front-facing camera of a mobile device to perform three-dimensional deflectometry-based surface measurements. In contrast to current mobile deflectometry systems, our method can capture surfaces with large normal variation and wide field of view (FoV). We achieve this by applying automated multi-view panoramic stitching algorithms to produce a large FoV normal map from a hand-guided capture process without the need for external tracking systems, like robot arms or fiducials. The presented work enables 3D surface measurements of specular objects'in the wild' with a system accessible to users with little to no technical imaging experience. We demonstrate high-quality 3D surface measurements without the need for a calibration procedure. We provide experimental results with our prototype Deflectometry system and discuss applications for computer vision tasks such as object detection and recognition.

Original languageEnglish (US)
Pages (from-to)9027-9038
Number of pages12
JournalOptics Express
Issue number7
StatePublished - Mar 30 2020

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


Dive into the research topics of 'Hand-guided qualitative deflectometry with a mobile device'. Together they form a unique fingerprint.

Cite this