This study compares two 3D scanning techniques used for the digitisation of a composite order sandstone capital from the 1929 Ibero-American Exposition in Seville. The primary objective of this research is to compare the effectiveness of these scanning methods in documenting complex heritage objects, focusing on factors such as scanning time, data accuracy, texture quality, usability, and cost-effectiveness. The first method employed was the EinScan Pro 2X Plus, a professional handheld 3D scanner initially designed for industrial applications. The second method used was Scaniverse on an iPhone 15, a user-friendly application ideal for rapid digitisation, which enables 3D scans to be captured without prior technical expertise. The results from both scanning techniques were analysed and compared using CloudCompare, an open-source software for point cloud and mesh processing. This allowed for a comprehensive evaluation of geometric accuracy, texture fidelity, and resolution between the two methods. Although the results from the handheld scanner are more precise at geometrical level, the results from the mobile device are optimal for heritage approximation and dissemination; furthermore, its texture quality is superior. The study highlights the trade-offs between precision and accessibility, demonstrating that while smartphone-based tools provide flexible and portable solutions, handheld scanners offer superior accuracy and detail, particularly in controlled environments. Ultimately, this research contributes to the advancement of efficient, accessible, and cost-effective methods for the digital preservation of cultural heritage.

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Critical Comparison Between Professional Handheld Scanner and Smartphone-Based 3D Modelling Application

  • M. Torres-González,
  • M. Infante-Perea,
  • C. Cantillana-Merchante,
  • J. C. Galán-Jiménez,
  • M. León-Muñoz

摘要

This study compares two 3D scanning techniques used for the digitisation of a composite order sandstone capital from the 1929 Ibero-American Exposition in Seville. The primary objective of this research is to compare the effectiveness of these scanning methods in documenting complex heritage objects, focusing on factors such as scanning time, data accuracy, texture quality, usability, and cost-effectiveness. The first method employed was the EinScan Pro 2X Plus, a professional handheld 3D scanner initially designed for industrial applications. The second method used was Scaniverse on an iPhone 15, a user-friendly application ideal for rapid digitisation, which enables 3D scans to be captured without prior technical expertise. The results from both scanning techniques were analysed and compared using CloudCompare, an open-source software for point cloud and mesh processing. This allowed for a comprehensive evaluation of geometric accuracy, texture fidelity, and resolution between the two methods. Although the results from the handheld scanner are more precise at geometrical level, the results from the mobile device are optimal for heritage approximation and dissemination; furthermore, its texture quality is superior. The study highlights the trade-offs between precision and accessibility, demonstrating that while smartphone-based tools provide flexible and portable solutions, handheld scanners offer superior accuracy and detail, particularly in controlled environments. Ultimately, this research contributes to the advancement of efficient, accessible, and cost-effective methods for the digital preservation of cultural heritage.