Regular mesh measurement of large free form surfaces using stereo vision and fringe projection

Pinto, Tiago; Köhler, Christian; Albertazzi, Armando

doi:10.1016/j.optlaseng.2012.03.003

Cited by 23 publications

(12 citation statements)

References 16 publications

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“…slow speed. On the other hand, several non-contact sensors have been developed recently, such as laser beam scanner [4]- [6], structured-light sensors [7]- [9] and stereo vision sensors [10], [11]. These sensors are much more efficient in terms of speed and reduce the human labor required.…”

Section: Introductionmentioning

confidence: 99%

Rapid and Precise Reverse Engineering of Complex Geometry Through Multi-Sensor Data Fusion

Wang

et al. 2019

IEEE Access

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This paper presents an effective multi-sensor approach for improving the accuracy of laser scanner by using a tactile probe to perform rapid and accurate reverse engineering of complex objects. The proposed system is unique in that it includes not only the physical integration of the two digitizers but also their combination at the measurement information level. With the coordinate data acquired using the optical scanner, intelligent data segmentation and feature recognition algorithm are proposed to divide the original point set into geometric elements and free-form surfaces. The tactile probe is guided to re-measure each feature with a small number of sampling points. Then different data fusion algorithms are proposed to compensate the scanned data patches of geometric features and free-form features with the accurate tactile probing data. Finally, the compensated point data can be exploited for accurate reverse engineering of a CAD model. Through the fusion of different sensor's information, both sensors complement each other with their advantages. Experimental results show that for the measurement of geometric surface, the proposed method can improve the accuracy of optical measurement to the accuracy of contact measurement. For freeform surface measurement, the proposed method reduces the optical measurement error from +0.032/-0.019 mm to ±0.016 mm, and the standard deviation from 0.012 mm to 0.004 mm. The measurement efficiency of proposed method is 4.5 times higher than that of contact measurement alone. INDEX TERMS Multi-sensor, reverse engineering, tactile probe, optical scanner, data fusion.

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Section: Introductionmentioning

confidence: 99%

Rapid and Precise Reverse Engineering of Complex Geometry Through Multi-Sensor Data Fusion

Wang

et al. 2019

IEEE Access

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“…Under certain environmental conditions, they generally differ in measurement volume as well as in speed and quality of the results. The methods, as reported in [3] and [4], can be very different. However, to solve a 3-D problem we have to look for an appropriate method.…”

Section: Introductionmentioning

confidence: 99%

A Structured Light Approach for 3-D Surface Reconstruction With a Stereo Line-Scan System

Lilienblum

Al-Hamadi

2015

IEEE Trans. Instrum. Meas.

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In this paper, we present a novel technique for optical 3-D surface reconstruction by using line-scan cameras and structured light in combination. The approach generating structured light is customized to the special demands of linescan image capturing. Owing to the distributed generation of light and the absence of shading elements, we obtain a light intensity that is comparable with conventional line lights. Thus, we achieve short integration times which is a necessary condition in most line-scan applications. Furthermore, with our approach we can generate different pattern sequences, which allows us to implement coded light methods such as time correlation or phase shifting. The light patterns can be switched synchronously with the captured lines of the camera. Thus, we are able to measure continuously whereby a single surface scan is sufficient to calculate a high-quality 3-D reconstruction.

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“…10 In order to get a robust performance, some structured lights are often projected to generate artificial texture for easing the stereo correspondence. 11–19 A mobile binocular stereovision system combined with multi-line structured light was proposed to measure a large 3D free surface. 11 It used a time-multiplexing code method to encode the structured light.…”

Section: Introductionmentioning

confidence: 99%

An onsite inspection sensor for the formation of hull plates based on active binocular stereovision

Wang

Zhen

et al. 2014

Proceedings of the Institution of Mechanical Engineers, Part B:

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Nowadays, the inspection of formed hull plates is still more dependent on wooden templates. The method based on wooden templates is imprecise, inefficiency and costly. In this article, an alternate measurement sensor for onsite inspection of formed hull plates is developed. The sensor can obtain accurate quantitative result with high efficiency. The case study demonstrated that the sensor could substitute wooden templates to inspect formed hull plates in workshop.

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Regular mesh measurement of large free form surfaces using stereo vision and fringe projection

Cited by 23 publications

References 16 publications

Rapid and Precise Reverse Engineering of Complex Geometry Through Multi-Sensor Data Fusion

Rapid and Precise Reverse Engineering of Complex Geometry Through Multi-Sensor Data Fusion

A Structured Light Approach for 3-D Surface Reconstruction With a Stereo Line-Scan System

An onsite inspection sensor for the formation of hull plates based on active binocular stereovision

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