Articles | Volume 7, issue 1
https://doi.org/10.5194/esurf-7-45-2019
https://doi.org/10.5194/esurf-7-45-2019
Research article
 | 
16 Jan 2019
Research article |  | 16 Jan 2019

A method based on structure-from-motion photogrammetry to generate sub-millimetre-resolution digital elevation models for investigating rock breakdown features

Ankit Kumar Verma and Mary Carol Bourke

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Short summary
The article describes the development of a portable triangle control target to register structure-from-motion-derived topographic data. We were able to generate sub-millimetre-resolution 3-D models with sub-millimetre accuracy. We verified the accuracy of our models in an experiment and demonstrated the potential of our method by collecting microtopographic data on weathered Moenkopi sandstone in Arizona. The results from our study confirm the efficacy of our method at sub-millimetre scale.