Uncalibrated Deflectometry with a Mobile Device on Extended Specular Surfaces
This work addresses the challenge of accessible 3D surface measurement for specular objects in uncontrolled environments, targeting users with minimal technical expertise, though it is a first step and thus incremental.
The paper tackles the problem of 3D measurement of extended specular surfaces with high normal variations using only a mobile device, achieving high-quality measurements without offline calibration and enabling dense reconstruction of large surfaces.
We introduce a system and methods for the three-dimensional measurement of extended specular surfaces with high surface normal variations. Our system consists only of a mobile hand held device and exploits screen and front camera for Deflectometry-based surface measurements. We demonstrate high quality measurements without the need for an offline calibration procedure. In addition, we develop a multi-view technique to compensate for the small screen of a mobile device so that large surfaces can be densely reconstructed in their entirety. This work is a first step towards developing a self-calibrating Deflectometry procedure capable of taking 3D surface measurements of specular objects in the wild and accessible to users with little to no technical imaging experience.