Techniques for the three-dimensional digitization of tangible heritage are continuously updated, as regards active and passive sensors, data acquisition approaches, implemented algorithms and employed computational systems. These developments enable higher automation and processing velocities, increased accuracy, and precision for digitizing heritage assets. For large-scale applications, as for investigations on ancient remains, heritage objects, or architectural details, scanning and image-based modeling approaches have prevailed, due to reduced costs and processing durations, fast acquisition, and the reproducibility of workflows. This paper presents an updated metric comparison of common heritage digitization approaches, providing a thorough examination of sensors, capturing workflows, processing parameters involved, metric and radiometric results produced. A variety of photogrammetric software were evaluated (both commercial and open sourced), as well as photo-capturing equipment of various characteristics and prices, and scanners employing different technologies. The experimentations were performed on case studies of different geometrical and surface characteristics to thoroughly assess the implemented three-dimensional modeling pipelines.

中文翻译：

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遗产对象3D数字化技术的关键比较

有形遗产的三维数字化技术不断更新，涉及有源和无源传感器，数据采集方法，已实现的算法和所采用的计算系统。这些发展实现了更高的自动化和处理速度，更高的准确性以及用于遗产资产数字化的精度。对于大型应用程序，如对古代遗迹，文物或建筑细节的调查，由于降低了成本和处理时间，快速获取并实现了工作流的可重复性，因此普遍采用了扫描和基于图像的建模方法。本文介绍了常见遗产数字化方法的最新指标比较，提供了传感器的全面检查，捕获工作流，涉及的处理参数，产生公制和放射线结果。评估了各种摄影测量软件（商业和开源），以及各种特性和价格的图像捕获设备以及采用不同技术的扫描仪。对不同几何和表面特征的案例研究进行了实验，以全面评估已实施的三维建模管道。