It is important to select suitable sampling space and projection data for reducing cost and improving the image reconstruction efficiency in convolution backprojection algorithm.
利用卷积反投影算法对图像进行重建时，要降低成本，提高成像效率，就必须选取合理的抽样间距和投影数。
Select 6 images for projection and discussion during class and bring them with you.
挑选出六张幻灯片并携带至课堂，供课堂投影以及讨论。
Select 6 slides for projection and discussion during class and bring them with you to class.
挑选出六张幻灯片并携带至课堂，供课堂投影以及讨论。
The results show that it is inadvisable to select a large curvature of horizontal projection and a complicated space curve, while the use of single waved curve would be better.
计算表明，空间线型预应力筋水平投影的曲率不宜太大，线型不宜太复杂，应尽量选择单波形曲线。
We select the special relaxation parameter and put the projection matrix into many blocks according to the projection angles in the reconstruction procedure.
在重建过程中采取对投影矩阵按投影角度分块的方法，选取特定的松弛参数。
This table can be also used to select axnometric projection drawing kinds and arrange the axnometric axes directions reasonably.
此表格还可以指导轴测图种类的选用及轴测方向合理地设置。
This table can be also used to select axnometric projection drawing kinds and arrange the axnometric axes directions reasonably.
此表格还可以指导轴测图种类的选用及轴测方向合理地设置。
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