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首页> 外文会议>O3A: Optics for Arts, Architecture, and Archaeology; Proceedings of SPIE-The International Society for Optical Engineering; vol.6618 >3D acquisition and modeling for flint artefacts analysis
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3D acquisition and modeling for flint artefacts analysis

机译：打火石分析的3D采集和建模

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摘要

In this paper, we are interested in accurate acquisition and modeling of flint artefacts. Archaeologists needs accurate geometry measurements to refine their understanding of the flint artefacts manufacturing process. Current techniques require several operations. First, a copy of a flint artefact is reproduced. The copy is then sliced. A picture is taken for each slice. Eventually, geometric information is manually determined from the pictures. Such a technique is very time consuming, and the processing applied to the original, as well as the reproduced object, induces several measurement errors (prototyping approximations, slicing, image acquisition, and measurement). By using 3D scanners, we significantly reduce the number of operations related to data acquisition and completely suppress the prototyping step to obtain an accurate 3D model. The 3D models are segmented into sliced parts that are then analyzed. Each slice is then automatically fitted by mathematical representation. Such a representation offers several interesting properties: geometric features can be characterized (e.g. shapes, curvature, sharp edges, etc), and a shape of the original piece of stone can be extrapolated. The contributions of this paper are an acquisition technique using 3D scanners that strongly reduces human intervention, acquisition time and measurement errors, and the representation of flint artefacts as mathematical 2D sections that enable accurate analysis.
机译：在本文中，我们对火石制品的准确采集和建模感兴趣。考古学家需要精确的几何尺寸以完善对火石制品制造过程的了解。当前的技术需要几种操作。首先，复制a石制品的副本。然后将副本切成薄片。为每个切片拍摄一张照片。最终，根据图片手动确定几何信息。这种技术非常耗时，并且应用于原始对象以及复制对象的处理会引起一些测量误差（原型近似，切片，图像获取和测量）。通过使用3D扫描仪，我们大大减少了与数据采集相关的操作数量，并完全抑制了原型制作步骤，从而获得了准确的3D模型。将3D模型分割成切片部分，然后进行分析。然后通过数学表示自动拟合每个切片。这样的表示提供了几个有趣的特性：可以表征几何特征（例如形状，曲率，尖锐的边缘等），并且可以推断出原始石材的形状。本文的贡献是使用3D扫描仪的一种采集技术，该技术可大大减少人为干预，采集时间和测量误差，并将fl石制品表示为能够精确分析的数学2D部分。

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