3D imager for dimensional gauging of industrial workpieces: state of the art of the development of a robust and versatile system

Sansoni, Giovanna; Lazzari, Sara; Peli, S.; Docchio, Franco

doi:10.1109/im.1997.603844

Cited by 14 publications

(6 citation statements)

References 9 publications

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“…Sansoni et al compared the accuracy of GCM and PSM separately [17]. After experiments, they realised that both PSM and GCM obtain similar precision in their measurements (about 0:18 mm).…”

Section: Combination Of Gray Code and Phase Shiftingmentioning

confidence: 99%

Pattern codification strategies in structured light systems

Salví

Pagès

Batlle

2004

Pattern Recognition

988

491

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Coded structured light is considered one of the most reliable techniques for recovering the surface of objects. This technique is based on projecting a light pattern and viewing the illuminated scene from one or more points of view. Since the pattern is coded, correspondences between image points and points of the projected pattern can be easily found. The decoded points can be triangulated and 3D information is obtained. We present an overview of the existing techniques, as well as a new and deÿnitive classiÿcation of patterns for structured light sensors. We have implemented a set of representative techniques in this ÿeld and present some comparative results. The advantages and constraints of the di erent patterns are also discussed.

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“…Sansoni et al compared the accuracy of GCM and PSM separately [17]. After experiments, they realised that both PSM and GCM obtain similar precision in their measurements (about 0:18 mm).…”

Section: Combination Of Gray Code and Phase Shiftingmentioning

confidence: 99%

Pattern codification strategies in structured light systems

Salví

Pagès

Batlle

2004

Pattern Recognition

988

491

View full text Add to dashboard Cite

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“…The viewer of real 3D scenes which is to be imple− mented in contemporary graphics hardware needs [44,45] …”

Section: Calibration Tables For 3d Viewingmentioning

confidence: 99%

Structured light camera calibration

Garbat

Skarbek

Tomaszewski

2013

Opto-Electronics Review

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Structured light camera which is being designed with the joined effort of Institute of Radioelectronics and Institute of Optoelectronics (both being large units of the Warsaw University of Technology within the Faculty of Electronics and Information Technology) combines various hardware and software contemporary technologies. In hardware it is integration of a high speed stripe projector and a stripe camera together with a standard high definition video camera. In software it is supported by sophisticated calibration techniques which enable development of advanced application such as real time 3D viewer of moving objects with the free viewpoint or 3D modeller for still objects.

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“…O C (X C ,Z C ) represents the optical center of camera that captured the distorted patterns on the object. For the purpose of system modeling and calibration, these components (projector and camera) are placed in such a way that optical centers and reference are coplanar (14), (15) . However, this will never achievable in practice.…”

Section: Definition Of Measurement Areamentioning

confidence: 99%

“…Under the assumption δm = δn = 1 (m, n are integer), the uncertainties of all points in MA can be calculated from Eqs. (13) and (14). Figure 5 shows a map which gives a clear overview of the uncertainty distribution.…”

Section: System Setupmentioning

confidence: 99%

A Fast Evaluation Approach of Geometrical Correspondence Uncertainty for 3-D Vision Measurement System

Tsai

Hung

2006

JSME Int. J., Ser. C

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This paper addresses an approach for fast evaluation approach of correspondence uncertainty in 3-D vision metrology systems. The mathematic model of spatial resolution measurement area of a 3-D active vision system is developed from the calibrated system parameters. Using the derived model, error of correspondence matching between digital micro-mirrors device (DMD) and charge coupled device (CCD) camera is analyzed. Moreover, a performance index, expressed in terms of correspondence uncertainty, is used for evaluation of the upper and lower bound of resolution. In order to verify the proposed evaluation approach, a precision surface measurement system is established and calibrated. Our analysis shows that the upper part of the measurement area has the smallest correspondence uncertainty, which agrees well with the real physical arrangement. The variation of correspondence uncertainty within the measurement area is around 60.96%. Furthermore, based on the theoretical analysis of uncertainty bounds, an experimental measurement on gauge block was carried out and validated the method.

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3D imager for dimensional gauging of industrial workpieces: state of the art of the development of a robust and versatile system

Cited by 14 publications

References 9 publications

Pattern codification strategies in structured light systems

Pattern codification strategies in structured light systems

Structured light camera calibration

A Fast Evaluation Approach of Geometrical Correspondence Uncertainty for 3-D Vision Measurement System

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