A Panoramic Fringe Projection system

Flores, Victor Humberto Orbegoso; Casaletto, Luciana; Genovese, Katia; Martı́nez, Amalia; Montes, Ayax M. Sifuentes; Rayas, J. A.

doi:10.1016/j.optlaseng.2014.02.002

Cited by 12 publications

(4 citation statements)

References 11 publications

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“…Cylinder objects play an important role in the representation of mechanical structure, especially in the mechanical manufacturing and assembly industry, there are a large of cy linder objects. In recent years, many experts and scholars have studied the use of digital fringe projection technology for three-dimensional measurement of cylinder objects, and applied the threedimensional point cloud data fitting method for object detection and parameters estimat ion [12][13][14]. For the discrete point cloud, cylinder point cloud fitting is to use the feature fitting method to create a global description for the given object [15], which is suitable for object recognition and modeling [16], surface reconstruction [17], manufacturing and quality control [18], etc.…”

Section: Introductionmentioning

confidence: 99%

Cutting Plane Based Cylinder Fitting Method With Incomplete Point Cloud Data for Digital Fringe Projection

Xue

2020

IEEE Access

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Benefiting fro m the characteristics of full field scanning, high resolution and high precision, digital fringe projection measurement technology has been widely used in three -dimensional measurement. For the cylinder pose detection, due to the influence of occlusion and noise, the obtained three-dimensional point cloud informat ion is usually inco mplete, resulting in the unreliable object parameters after point cloud fitting. In view of the above problems, a cy linder fitting method with inco mplete point clou d data based on the cutting plane is proposed. Firstly, the point cloud is processed by bilateral filtering method to reduce the influence of outliers and noise points. Then, according to the principle of forming ellipse on cylinder cutting plane, some equidistant cutting planes are selected. At the same time, in order to reduce the influence of outliers on fitting, the random sampling consistency algorith m is used for ellipse fitting with the points on each cutting plane, that is, the ellipse parameters co rresponding to each cutting plane can be obtained. Finally, random sampling consistency algorithm is applied for cylinder axis fitting with the ellipse centers of all the cutting planes, calculating the axis vector of the cylinder. Thus, the parameters of the cylinder detected are obtained. The experimental results of stepped cylinder with d iffuse reflection and metal cylinder show the effectiveness and high precision of the proposed method.INDEX TERMS digital fringe projection, cutting plane, cylinder fitting, incomplete point cloud, ellipse fitting.

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Section: Introductionmentioning

confidence: 99%

Cutting Plane Based Cylinder Fitting Method With Incomplete Point Cloud Data for Digital Fringe Projection

Xue

2020

IEEE Access

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“…Yajun Wang et al [15] used digital micro-mirror device (DMD) to improve measuring speed; V.H. Flores et al [16] present a novel Panoramic Fringe Projection system (PFP) and César-Cruz Almaraz-Cabral et al [17] introduced a panoramic profilometric system. These applications measure 3D structures or shapes with hidden parts, or create structural tomograms, monitor the welding process, or retrieve the 3D terrain of quasi-cylindrical objects.…”

Section: Introductionmentioning

confidence: 99%

Design of 3D Laser Radar Based on Laser Triangulation

2019

KSII TIIS

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The aim of this paper is to design a 3D laser radar prototype based on laser triangulation. The mathematical model of distance sensitivity is deduced; a pixel-distance conversion formula is discussed and used to complete 3D scanning. The center position extraction algorithm of the spot is proposed, and the error of the linear laser, camera distortion and installation are corrected by using the proposed weighted average algorithm. Finally, the three-dimensional analytic computational algorithm is given to transform the measured distance into point cloud data. The experimental results show that this 3D laser radar can accomplish the 3D object scanning and the environment 3D reconstruction task. In addition, the experiment result proves that the product of the camera focal length and the baseline length is the key factor to influence measurement accuracy.

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“…The use of external mirrors combined with digital cameras allows to define a broad range of solutions for computer vision applications. Catadioptric devices are used for vision-based tasks in driver assistance systems [2], robot and unmanned aerial vehicle navigation [3][4][5], 3D metrology applications [6,7]. Combinations of single or multiple mirrors having different shapes (planar or curved) are placed in front of one or more cameras to widen the field of view [8,9].…”

Section: Introductionmentioning

confidence: 99%

“…However, both the above described approaches rely on the calibration of the projector to reduce the distortion influence. A panoramic fringe projection system is also proposed in [7]. A stereo setup, composed of a LCD projector and a CCD camera, is combined with a concave conical mirror, a beam-splitter and an axicon to provide panoramic projection and 3D reconstruction.…”

Section: Introductionmentioning

confidence: 99%