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<p>Advancements in remote sensing and spatial information technologies have made the digitalization of geological relics a vital method for enriching geoheritage databases. However, complex topographies and intricate textures complicate the fine-detail digitization process. To accurately digitize geological relics, this study conducts qualitative and quantitative analysis of the geometric and textural information from 13 digital models. It proposes using smartphones to capture semi-circular images at geological sites, followed by digitization using ISfM-PMVS, and then interpretation and documentation of the data. In the Middle Red Beds of Central Yunnan, fault profiles were created, measuring fault length, spacing, dip direction, and dip angle. In the Thousand Turtle Mountains, digital models mapped crack morphology, with point clouds achieving a detection accuracy of 0.963. Although edge distortions exist, ISfM-PMVS produces high-fidelity 3D models, offering a fast, low-cost solution for reliable field-based data collection, supporting intelligent interpretation, digital recording, research, heritage exhibitions, and conservation. </p>

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A Study on Digital Recording and Information Interpretation of Geological Heritage by Smartphone

  • 期刊论文

  • 发表日期：

    2026年5月19日

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  • Weidong Luo,
  • Shu Gan,
  • Xiping Yuan,
  • Cheng chen,
  • Zhifu Zhu,
  • Chi Zhang,
  • Yu Wang

摘要

Advancements in remote sensing and spatial information technologies have made the digitalization of geological relics a vital method for enriching geoheritage databases. However, complex topographies and intricate textures complicate the fine-detail digitization process. To accurately digitize geological relics, this study conducts qualitative and quantitative analysis of the geometric and textural information from 13 digital models. It proposes using smartphones to capture semi-circular images at geological sites, followed by digitization using ISfM-PMVS, and then interpretation and documentation of the data. In the Middle Red Beds of Central Yunnan, fault profiles were created, measuring fault length, spacing, dip direction, and dip angle. In the Thousand Turtle Mountains, digital models mapped crack morphology, with point clouds achieving a detection accuracy of 0.963. Although edge distortions exist, ISfM-PMVS produces high-fidelity 3D models, offering a fast, low-cost solution for reliable field-based data collection, supporting intelligent interpretation, digital recording, research, heritage exhibitions, and conservation.