Abstract
In this paper, we present a whole procedure for constructing 3D models of stone tools including scanning, data acquisition and surface reconstruction with hole-filling. The process of scanning hundreds or thousands of small objects is time consuming. Our original 3D laser scanner optimizes the scanning process and reduces time significantly by four directional scanning of many small objects simultaneously. To reconstruct surface of stone tools, the scanned point clouds are processed with a new triangulation method that preserves the properties of sharp edges. Our approach is based on a projection based method in which points are distinguished into neighboring layers with a point cloud slicing method to be individually reconstructed. In addition, we introduce a simple hole-filling algorithm for mesh completion of models. The main advantages of our approach are speed and efficiency for reconstruction of many small objects.
Highlights
The most commercial scanners can measure few stone tools at the same time with the multi point data acquisition
We have studied a whole procedure for stone tool reconstruction including scanning process and implementation algorithm to construct triangular meshes and fill the holes
Objects can be classified into three types: large size objects such as historical buildings and big statues [3, 4], medium ones like medium statues and bigger tools [5, 6] and small ones like stone tools and jewelries [7, 8]
Summary
Of stone tools, it is very important to preserve their geometric features. The most commercial scanners can measure few stone tools at the same time with the multi point data acquisition. Surface reconstruction from a large amount of point data is time consuming and many existing surface reconstruction algorithms have difficulty to construct sharp edges. We have studied a whole procedure for stone tool reconstruction including scanning process and implementation algorithm to construct triangular meshes and fill the holes. Laser scanning technology allows us to reconstruct highly accurate 3D models of the cultural artifacts. Reconstruction of 3D stone tools with using a laser scanner is one of the integral parts for the cultural heritage conservation. In the cultural heritage conservation as well as in the study of the stone tools, it is an important issue to construct accurate 3D model replicas. The surfaces of stone tools contain specific properties such as sharp edge, flake scar and percussion point [9].
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