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A Performance Comparison of 3D Survey Instruments for Their Application in the Cultural Heritage Field
Irene Lunghi1, Emma Vannini1, Alice Dal Fovo1
1National Research Council-National Institute of Optics (CNR-INO), Largo E. Fermi 6, 50125 Firenze, Italy.
Sensors (Basel, Switzerland)
|June 27, 2024
Summary
This study compares four 3D scanning instruments for cultural heritage, evaluating their accuracy and resolution for 3D reconstruction of artworks. Findings help select the best 3D modeling tools for preserving and virtually experiencing art.
Area of Science:
- Digital Heritage
- Metrology
- 3D Imaging
Background:
- 3D modeling offers valuable insights in fields like industrial metrology and cultural heritage.
- 3D reconstruction of artworks is crucial due to risks like disasters and the rise of virtual art experiences.
Purpose of the Study:
- To quantitatively assess and compare the performance of four different 3D scanning instruments.
- To verify the accuracy and technical specifications of instruments against real-world samples.
- To guide the appropriate selection of 3D instruments for cultural heritage applications.
Main Methods:
- Comparison of four 3D instruments: laser micro-profilometry, structured-light topography, and phase-shifting methods.
- Measurement of four samples with varying sizes, dimensions, and surface characteristics.
- Calculation of point densities and extraction of profiles to evaluate lateral (XY) and axial (Z) resolution.
Main Results:
- Performance evaluation of different 3D scanning techniques based on accuracy and resolution.
- Determination of instrument capabilities and limitations for 3D reconstruction.
- Comparison of nominal versus calculated resolution values using cultural artifact samples.
Conclusions:
- The study provides a quantitative assessment of 3D instrument performance for cultural heritage applications.
- Results aid in selecting appropriate 3D modeling tools based on specific artwork characteristics.
- This research supports the accurate 3D reconstruction and preservation of valuable art objects.
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