重建

The revolution axis of the surface of revolution is calculated by image parameters and top circle of revolution. The rectified image is then used to recover the contour generator and the object is reconstructed.

在理论上讲，利用一张影像就可以实现旋转体的三维重建，但在本文中使用了多张照片，主要是为了获取整个旋转体的纹理。

At the last, filter back projection was used to reconstruct the image.

最后利用滤波反投影法重建图像。

The Filtered back projection technique Is used more as a method of image reconstruction currently.

滤波──逆投影法是当前用得较多的一种图像重建方法，在当代X射线CT系统中几乎都用这种方法构成系统。

An image super-resolution reconstruction method, which combines the frequency domain motion estimation and iterative back projection algorithm, has been proposed.

提出了一种结合频域运动估计和迭代反投影的超分辨率图像重建算法。

Super resolution, image reconstruction, iterative back projection algorithm, frequency domain motion estimation

超分辨率，图像重建，迭代反投影算法，频域运动估计

According to this,the reconstruction algorithms such as Linear Back Projection,Filter Back Projection and projection rearrangement method cannot be applied directly and must be improved.

根据这一情况，在医学CT中常用的一些图像重建算法如反投影法、滤波反投影法和投影重排方法都必须加以改进才能引用。

In order to improve the precision of registration algorithm and the quality of reconstructed image, an image registration method with sub-pixel precision is proposed, and super-resolution reconstruction is performed through iterative back projection algorithm.

提出了一种具有子像素级精度的图像配准方法，并通过迭代反投影算法进行超分辨率重建。

Finally, according to the movement information with sub-pixel precision gained by registration algorithms, super-resolution reconstruction is performed with iterative back projection algorithm.

最后，根据配准算法所得到的子像素级运动信息，用迭代反投影算法进行超分辨率重建。

In the experimentation, the circular measurement configuration combined with the filtered back projection algorithm,very high signal-to-noise ratio tomography images can be obtained.

实验中，通过旋转超声探测器进行数据采集，并利用滤波反投影算法重建图像，可得到高信噪比的光声层析图像。

World Food Program Asian regional director Tony Banbury says relief workers are still supplying basic necessities to devastated communities, but governments and organizations are starting to think of restoring of homes and livelihoods.

世界粮食计划署的亚洲地区主任班伯里说，救灾人员继续向灾区提供基本必需品，但是政府和一些组织已经开始考虑帮助灾民重建家园，恢复他们的正常生活。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。