研究了光栅图象的投影、采集及预处理方法，并对得到的被测物体表面三维数据点进行重构显示。
The preprocessing methods of grating image are studied, and the 3d object surface data is reconstructed.
dlt算法是利用平面图象进行三维重构的广泛采用的基本算法。
The DLT algorithm is widely used in 3-d reconstruction of planar images.
随着医学图象临床应用研究的深入，基于医学图象的器官三维重构显得越来越重要。
With the research development of 3d medical image application in clinic, medical image 3d-reconstruction has become more and more significant.
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