Fast profilometer for the automatic measurement of 3-D object shapes

Tang, Suhua; Hung, Y. Y.

doi:10.1364/ao.29.003012

Cited by 95 publications

(36 citation statements)

References 12 publications

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“…In order to solve this problem, different methods have been proposed such as structure light or pattern protection. In these methods, projecting a predefined pattern on an object and comparing the reflected pattern from the object with the pre-defined pattern can be used to extract depth information (Le Moigne & Waxman, 1985); (Morita, Yajima, & Sakata, 1988); (Maruyama & Abe, 1993); (Boyer & Kak, 1987); (Tang & Hung, 1990); (Srinivasan, Liu, & Halioua, 1984). Similar technique can be used in SfM techniques by projecting a very dense and texture-full pattern on the object before capturing the images.…”

Section: Introductionmentioning

confidence: 99%

A Low-Cost and Portable System for 3d Reconstruction of Texture-Less Objects

Ahmadabadian

Yazdan

Karami

et al. 2015

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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The optical methods for 3D modelling of objects can be classified into two categories including image-based and range-based methods. Structure from Motion is one of the image-based methods implemented in commercial software. In this paper, a low-cost and portable system for 3D modelling of texture-less objects is proposed. This system includes a rotating table designed and developed by using a stepper motor and a very light rotation plate. The system also has eight laser light sources with very dense and strong beams which provide a relatively appropriate pattern on texture-less objects. In this system, regarding to the step of stepper motor, images are semi automatically taken by a camera. The images can be used in structure from motion procedures implemented in Agisoft software.To evaluate the performance of the system, two dark objects were used. The point clouds of these objects were obtained by spraying a light powders on the objects and exploiting a GOM laser scanner. Then these objects were placed on the proposed turntable. Several convergent images were taken from each object while the laser light sources were projecting the pattern on the objects. Afterward, the images were imported in VisualSFM as a fully automatic software package for generating an accurate and complete point cloud. Finally, the obtained point clouds were compared to the point clouds generated by the GOM laser scanner. The results showed the ability of the proposed system to produce a complete 3D model from texture-less objects.

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Section: Introductionmentioning

confidence: 99%

A Low-Cost and Portable System for 3d Reconstruction of Texture-Less Objects

Ahmadabadian

Yazdan

Karami

et al. 2015

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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“…PMP has its advantages in diverse practical application fields such as 3D imaging, biological medicine, industrial inspection, product quality control and reverse engineering due to its characteristics of non-contact, higher precision and easier implementation [8,9]. But in traditional PMP (TPMP), multiple frames of deformed phase-shifting patterns must be captured, so it is not conducive to real-time 3D shape measurement such as fast measurement and on-line inspection.…”

Section: Introductionmentioning

confidence: 99%

Optimized design of composite grating in real-time three-dimensional shape measurement

Cao

et al. 2015

Optik

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“…Fringe Projection has been applied successfully in problems related with the analysis of the shape of biological specimens [2] and mechanical parts [3][4][5][6][7][8]. In the Fringe Projection technique [4], a fringe image is projected on the object under investigation and a photograph is taken.…”

Section: Introductionmentioning

confidence: 99%

Low Order Modeling of a Metal Plate Under Vibrations

et al. 2006

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The Proper Orthogonal Decomposition (POD) method and the Galerkin projection are applied to study vibrations on an aluminum square plate. Data from the plate vibrations were obtained using a Laser Vibrometer and the Fringe Projection technique. The vibrations, within the range 100 to 5,000 Hz, on the metal plate were produced with an electrodynamical shaker. Due to the symmetrical nature of the plate, the vertical displacement velocity measurements were taken only on a rectangular grid of 7Â8 points. The vertical displacement velocity measured at different locations and times, was synchronized with a full-field instantaneous image of the plate obtained from the Fringe Projection technique. The plate vibration measurements were used to calculate its eigenfunctions and the eigenvalues. It was found that a large fraction of the total energy of the vibration is contained within the first two POD modes. The essential features of the vibration are thus described by only the first two eigenfunctions. A reduced order model for the dynamical behavior is then constructed using the Galerkin projection of the equation of motion for the vertical displacement of a plate.

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Fast profilometer for the automatic measurement of 3-D object shapes

Cited by 95 publications

References 12 publications

A Low-Cost and Portable System for 3d Reconstruction of Texture-Less Objects

A Low-Cost and Portable System for 3d Reconstruction of Texture-Less Objects

Optimized design of composite grating in real-time three-dimensional shape measurement

Low Order Modeling of a Metal Plate Under Vibrations

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