我们较多使用了美国NextEngine非接触式彩色激光扫描仪(型号为2020i)。扫描设置及扫描结果的编辑均在该扫描仪的配套软件“扫描工作室”(Scan Studio)完成。扫描时,根据骨骼形态特征及实际需求设置扫描方式、纹理捕捉模式、目标颜色、扫描精度等参数。一般情况下,理想的骨骼模型应满足如下四个基本条件,即整体较为完整清晰,细节能较好地呈现,模型文件大小适中,扫描时间较短。由于单次扫描无法获取骨骼完整的三维数据,需要从多角度获取扫描对象的三维数据。通过测试,我们发现扫描两次即可获得较为完整的形态数据(图二,1、2)。扫描完成后,可对两次扫描所获取的三维数据进行拼接并导出(图二,3)。
1.分层环绕拍摄 2.使用Context Capture三维建模 3.使用MeshLab合并模型
图九 顶蛳山遗址M35颅骨形变矫正的GOM Inspect拟合分析
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