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http://hdl.handle.net/10071/16695
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Title: Photogrammetry for digital reconstruction of railway ballast particles – a cost-efficient method
Authors: Paixão, A.
Resende, R.
Fortunato, E.
Keywords: Railway ballast
Aggregate
Photogrammetry
Particle geometry
Physical properties
Laser scanning
3D digital model
3D reconstruction
Measurements
Issue Date: 2018
Publisher: Elsevier
Abstract: Ballast aggregate is a natural material widely used in railway lines. Its mechanical properties and particle geometry are meticulously defined using well-established standards and characterisation procedures. Though extensively validated, these procedures have some limitations: they are operator dependent; only provide major particle dimensions; do not inform on surface colour; nor allow for advanced particle wear analysis or particle-based simulations. This work presents a cost-efficient photogrammetry method for 3D reconstruction of ballast particles, as an alternative to the significantly expensive laser scanning. It produces digital models of equivalent or higher quality, allowing for advanced and automated particle geometry analyses. Particle meshes produced here are shared among researchers.
Peer reviewed: yes
URI: http://hdl.handle.net/10071/16695
DOI: 10.1016/j.conbuildmat.2018.10.048
ISSN: 0950-0618
Ciência-IUL: https://ciencia.iscte-iul.pt/id/ci-pub-50371
Accession number: WOS:000451105100083
Appears in Collections:ISTAR-RI - Artigos em revistas científicas internacionais com arbitragem científica

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TRGEO_2019_138_R2-Revised manuscript file with changes.pdfPós-print1.33 MBAdobe PDFView/Open


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