The main reason is the radon space data of scanned object is not complete, which will result in the image artifacts when using FDK algorithm to reconstruct with moderate or large cone angles.
本文分析FDK算法在中大锥角时重建产生伪影的主要原因是投影数据不完全，被扫描物体雷当空间数据缺失。
Fig. 03 shows, source object Cone copied and aligned to Geosphere's polygons and another object box copied and aligned with vertices of Geosphere.
如图3所示，源物体圆锥被复制对齐到几何球体的多边面上，另一些方盒子则被复制对齐到几何球体的顶点上。
With pure aluminum powder as the research object, this paper made use of HPT for making cone-shaped part prepared by pure al powder sintered material.
本文以纯铝粉末材料为研究对象，将高压扭转法应用于粉末烧结体锥形件的制备。
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