Photogrammetry for digital reconstruction of railway ballast particles – a cost-efficient method

This Dataset contains supplementary data related to the scientific article "Photogrammetry for digital reconstruction of railway ballast particles - a cost-efficient method", by André Paixão, Ricardo Resende and Eduardo Fortunato, Construction and Building Materials, Elsevier B.V., ISSN: 0950-0618 (accepted for publication October 6th, 2018).

https://doi.org/10.1016/j.conbuildmat.2018.10.048

The data comprises two .zip files, each containing a set of digital 3D .ply models of 18 reconstructed railway ballast particles. The 3D models in one set were obtained using laser scanning (Creaform EXAscan), the models in the other set were obtained by the photogrammetry approach proposed by the authors in the article. Original captures (.jpg) used for the 3D reconstruction of the ballast particles by the photogrammetry method described in the paper may also be provided.

For additional data please contact the authors.

Acknowledgments
The laser scans and the traditional particle measurements were performed in the scope of a MSc thesis of Patrícia Jerónimo. The authors are grateful to Geotrilho for kindly lending the laser scan equipment and to Eng. Bruno Baeta for performing the scans. The help of Mr. Rui Coelho from LNEC in the photogrammetry tasks is also greatly acknowledged. The first author’s postdoctoral fellowship [SFRH/BPD/107737/2015] was supported by Portuguese Foundation for Science and Technology (FCT), through POCH co-financed by the ESF and national funds of MCTES, Portugal. Part of the work was conducted with the support of ISTAR-IUL (UID/MULTI/4466/2016). This work was conducted in the framework of the TC202 national committee of the Portuguese Geotechnical Society (SPG) “Transportation Geotechnics”, in association with the International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE-TC202).

本数据集收录了与科学论文《基于数字重建铁路道砟颗粒的摄影测量——一种经济高效的方法》（作者：André Paixão、Ricardo Resende 和 Eduardo Fortunato，发表于《建筑与建筑材料》，Elsevier B.V.，ISSN: 0950-0618，已接受于2018年10月6日出版）相关的补充数据。

数据包括两个.zip文件，每个文件均包含一组18个重建铁路道砟颗粒的数字3D.ply模型。一组模型采用激光扫描（Creaform EXAscan）技术获取，另一组模型则采用了论文中提出的摄影测量方法。此外，可能还会提供用于基于论文所述摄影测量方法进行道砟颗粒三维重建的原始捕捉图像（.jpg）。

如需获取更多数据，请联系作者。

致谢

激光扫描和传统颗粒测量是在Patrícia Jerónimo的硕士论文范围内进行的。作者对Geotrilho慷慨借出激光扫描设备表示衷心感谢，并对Eng. Bruno Baeta执行扫描工作表示感谢。同时，对LNEC的Rui Coelho先生在摄影测量任务中的帮助也表示深深的感激。第一作者的后博士研究生奖学金[SFRH/BPD/107737/2015]由葡萄牙科学技术基金会（FCT）资助，通过POCH合作融资，由欧洲社会基金（ESF）和葡萄牙国家资金（MCTES）共同支持。部分工作在ISTAR-IUL（UID/MULTI/4466/2016）的支持下完成。本工作是在葡萄牙土力学学会（SPG）国家委员会TC202“运输土力学”框架内进行的，并与国际土力学与岩土工程学会（ISSMGE-TC202）联合实施。