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Type: Artigo de periódico
Title: Fruit profilometry based on shadow Moire techniques
Author: Lino, ACL
Dal Fabbro, IM
Abstract: The Moire Techniques (MT) are a group of techniques based on the moire phenomenon, which are commonly used in profilometry, due to your simplicity and measurement speed. The moire phenomenon consists of the interference caused by the overlapping of two periodic structures or grids. Shadow TM with multiplication of fringes is more sensitive than the traditional method and besides, they reduce the effects of the illumination difference in the surface of the object in study. The objective of this work was to generate a digital model of the surface of the pear for shadow TM with multiplication of fringes and to compare with another model generated starting from scanner 3D. For this, a model of a pear, in scale 1:1, made in paraffin and an experimental set up outline with moire grid, light and digital photographic camera were used. The results showed a high correlation among the results from the two methods. Shadow TM with multiplication of fringes gave a satisfactory determination of topography of the pear.
Subject: Moire techniques
shadow moire
Country: Brasil
Editor: Univ Federal Lavras-ufla
Citation: Ciencia E Agrotecnologia. Univ Federal Lavras-ufla, v. 28, n. 1, n. 119, n. 125, 2004.
Rights: aberto
Date Issue: 2004
Appears in Collections:Unicamp - Artigos e Outros Documentos

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