Mr. David Alejandro Aguilar Arévalo Profile

David Alejandro Aguilar Arévalo

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Proceedings Article | 8 February 2017 Paper

Low cost 3D scanning process using digital image processing

David Aguilar, Carlos Romero, Fernando Martínez

Proceedings Volume 10225, 102251X (2017) https://doi.org/10.1117/12.2266989

KEYWORDS: 3D scanning, Image processing, Digital image processing, 3D modeling, 3D image processing, Cameras, Prototyping, 3D acquisition, Clouds, Calibration

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This paper shows the design and building of a low cost 3D scanner, able to digitize solid objects through contactless data acquisition, using active object reflection. 3D scanners are used in different applications such as: science, engineering, entertainment, etc; these are classified in: contact scanners and contactless ones, where the last ones are often the most used but they are expensive. This low-cost prototype is done through a vertical scanning of the object using a fixed camera and a mobile horizontal laser light, which is deformed depending on the 3-dimensional surface of the solid. Using digital image processing an analysis of the deformation detected by the camera was done; it allows determining the 3D coordinates using triangulation. The obtained information is processed by a Matlab script, which gives to the user a point cloud corresponding to each horizontal scanning done. The obtained results show an acceptable quality and significant details of digitalized objects, making this prototype (built on LEGO Mindstorms NXT kit) a versatile and cheap tool, which can be used for many applications, mainly by engineering students.

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