A novel application of the white light/fringe projection duo: Recovering high precision 3-D images from fossils for the digital preservation of morphology
Por:
Gutiérrez-García J.C., Gutiérrez-García T.A., Mosino, JF, Vázquez-Domínguez E., Martínez A., Arroyo-Cabrales J.
Publicada:
1 ene 2015
Categoría:
Oceanography
Resumen:
There has been long historical interest in digital preservation of morphological features of biological materials, especially because often the preservation of sensitive molecules is critical for evolutionary studies. To this end, we successfully applied the recent advances of the fringe projection profilometry technique, in conjunction with white light and a new phase algorithm, to digitalize the shape of a fossil rodent hemi-mandible. We were able to generate a cloud of points in an array of data that allowed us to plot a three-dimensional (3-D) digital restoration of the entire fossil sample. The maximum resolution of this system is given by the diffraction limit (in the order of microns), and we show that this enhanced system can be used with objects in a range of 1-30 mm, minimizing the systematic errors induced by small vibrations or light fluctuations and, consequently, improving the signal-to-noise ratio of the recovered cloud data. This is a useful tool to preserve 3-D images of fossils and other biological objects for which rather detailed morphological information is required, like in research studies for biologists and paleontologists or, as in the present case, when researchers need a morphological replica because the sample will be destroyed for ancient DNA extraction. © Palaeontological Association August 2015.
Filiaciones:
Univ Nacl Autonoma Mexico, Inst Ecol, Dept Ecol Biodiversidad, Mexico City 04510, DF, Mexico
Centro de Investigaciones en Óptica, Loma del Bosque 115, A.P. 1-948, León, Guanajuato 37150, Mexico
Departamento de Ciencias Computacionales, Centro Universitario de Ciencias Exactas e Ingenierías Universidad de Guadalajara, Blvd. Marcelino García Barragán 1421, Guadalajara, Jalisco 44430, Mexico
Tecnológico Nacional de México-Instituto Tecnológico de León, Avenida Tecnológico S/N, León, Guanajuato 37290, Mexico
Departamento de Ecología de la Biodiversidad Instituto de Ecología, Universidad Nacional Autónoma de México, Apartado Postal 70-275, Ciudad Universitaria, México Distrito Federal04510, Mexico
Laboratorio de ArqueozoologíA ‘M. En C. Ticul Alvarez SolóRzano’, Subdirección de Laboratorios y Apoyo Académico, Instituto Nacional de Antropología e Historia, Moneda #16, Colonia Centro, 06060 Distrito Federal, Mexico
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