• Corpus ID: 198895228

Uncalibrated Deflectometry with a Mobile Device on Extended Specular Surfaces

@article{Willomitzer2019UncalibratedDW,
  title={Uncalibrated Deflectometry with a Mobile Device on Extended Specular Surfaces},
  author={Florian Willomitzer and Chia-Kai Yeh and Vikas Gupta and William Spies and Florian Schiffers and Marc Walton and Oliver S Cossairt},
  journal={ArXiv},
  year={2019},
  volume={abs/1907.10700}
}
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… 
2 Citations
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References

SHOWING 1-10 OF 25 REFERENCES
Deflectometry using portable devices
Abstract. Deflectometry is a powerful metrology technique that uses off-the-shelf equipment to achieve nanometer-level accuracy surface measurements. However, there is no portable device to quickly
Deflectometry vs. interferometry
Quantitative deflectometry is a new tool to measure specular surfaces. The spectrum of measurable surfaces ranges from flat to freeform surfaces with steep slopes, with a size ranging from
Deflectometric Self-Calibration for arbitrary specular surfaces
To measure specular surfaces our group developed the Phase Measuring Deflectometry (PMD) in the year 1999 [1]. Meanwhile the sensor is well established in the industry to control the manufacturing of
Phase measuring deflectometry: a new approach to measure specular free-form surfaces
We present a new method to measure specular free-form surfaces within seconds. We call the measuring principle `Phase Measuring Deflectometry' (PMD). With a stereo based enhancement of PMD we are
3D acquisition of mirroring objects using striped patterns
Deflectometry challenges interferometry: the competition gets tougher!
TLDR
A comparative assessment of the strengths and weaknesses of both measurement principles from the current perspective will show that deflectometry is now heading to become a serious competitor to interferometry.
Fast and accurate deflectometry with crossed fringes
Abstract Phase measuring deflectometry (PMD) acquires the two components of the local surface gradient via a sequence of two orthogonal sinusoidal fringe patterns that have to be displayed and
Structured Highlight Inspection of Specular Surfaces
TLDR
An approach to illumination and imaging of specular surfaces that yields three-dimensional shape information is described and the proposed structured highlight techniques are promising for many industrial tasks.
Mesostructure from Specularity
TLDR
This work proposes a progressive acquisition system that captures a dense specularity field as the only information for mesostructure reconstruction and can efficiently recover surfaces with fine-scale geometric details from complex real-world objects with a wide variety of reflection properties.
Flying Triangulation - a Motion-Robust Optical 3D Sensor for the Real-Time Shape Acquisition of Complex Objects
The three-dimensional shape acquisition of objects has become more and more important in the last years. Up to now, there are several well-established methods which already yield impressive results.
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