查询词典 projection

Experimental results show the image quality has been improved markedly, compared with the typical linear back projection algorithm and Landweber iteration algorithm.

实验结果表明，与典型的反投影及Landweber迭代算法相比，该算法所构图像质量有明显改善。

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

Computer simulation studies were carried out to compare the DR algorithm with the two popular algorithms: the time-domain reconstruction and the filtered back projection.

通过计算机仿真实验比较反卷积重建法和当前流行的时域重建法与滤波反投影法的性能。

Fourthly,a Fast Back Projection algorithm is presented.It sloves the problem of large computational load of BP algorithm and the condition of dividing the subapterture is presented.

接着提出了一种快速后向投影算法，解决了BP算法计算量大的问题，给出了子孔径划分的条件。

Key words: windows function; image reconstruction; convention back projection; fan beam scan model

通过实验，验证了基于窗函数的卷积反投影图像重建算法可以有效地提高重建图像的质量。

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。

No longer reflecting back to the ideological-charged western projection and imagination of China, they pay attention wholly to current social reality- to capture the nature of a changing and uncertain life and that contemporary Chinese art is down to the earth.

年轻艺术家似乎变得不再介意西方人怎样看待中国，而是将自己的注意力集中到对社会的观察与思考中，去抓住变化莫测的世界与焦虑生活的本质。

Synthetic aperture radar; frequency modulated continuous wave; ultra-high resolution ; motion compensation ; back projection algorithm

合成孔径雷达；调频连续波；超高分辨率；运动补偿；逆投影算法

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。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。