Original scientific paper

https://doi.org/10.7305/automatika.2016.01.1033

Accurate 3D reconstruction using a turntable-based and telecentric vision

José-Joel Gonzalez-Barbosa orcid.org/0000-0002-6720-8282 ; Instituto Politécnico Nacional CICATA Querétaro Cerro Blanco No. 141, Col Colinas del Cimatario, Querétaro, Qro, México C.P. 76090
José-Guadalupe Rico-Espino ; CIATEQ, Advanced Technology Center
Roberto-Augusto Gómez-Loenzo ; Universidad Autónoma de Querétaro, México
Hugo Jiménez-Hernández orcid.org/0000-0003-0827-6645 ; CIDESI, Centro de Investigación e Ingeniería Industrial
Miguel Razo ; Erik Jonsson School of Engineering and Computer Science University of Texas at Dallas
Ricardo Gonzalez-Barbosa ; División Ciencias de la Vida, Universidad de Guanajuato

Abstract

This paper presents a camera+telecentric lens that is able to obtain 3D information. We designed and implemented a method which can register and integrate 3D information captured from different viewpoints to build a complete 3D object model. First, a geometric model of a camera+telecentric lens is established. Then a calibration process using a planar checkerboard is developed and implemented. The object is placed on a rotation stage in front of a stationary camera. Normally the rotation axis is considered to be aligned with camera frame. In the description presented in this paper, the rotation matrix and translation vector of the rotation axis are calibrated. At the same time, a three-dimensional reconstruction system based on contour extraction of objects with dimensions less than 50 mm in diameter is developed. Finally, an analysis of the uncertainty model parameters and performance reconstruction of 3D objects are discussed.

Keywords

Calibration; 3D Reconstruction; Telecentric lens

Hrčak ID:

154040

URI

https://hrcak.srce.hr/154040

Publication date:

19.2.2016.

Article data in other languages: croatian

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