文中涉及各种主要重建算，法包括准确重建，近似重建和迭代重建算法。
All the major types of reconstruction approaches are discussed, including exact algorithms, approximate algorithms, and iterative algorithms.
此外，随后将要讨论的，迭代重建方法的进步对于CT将进一步减少辐射。
Moreover, as will be discussed subsequently, advancements in iterative reconstruction methods for ct should result in further reductions in radiation exposure.
提出了基于直接螺旋半扫描数据的有序子集期望最大化（OSEM）迭代重建。
This paper proposed a modified ordered subsets expectation maximization(OSEM) reconstruction based on the direct helical half-scan data.
对于迭代重建，目前尚无很好地解决该问题的算法，特别是对扇束投影重建问题。
Unfortunately, up to now, there is no an efficient algorithm to deal with the iterative reconstruction algorithm, especially from fan-scanned projections.
利用频谱解混叠方法和空间域迭代重建方法对低分辨率图像帧数大于等于4帧时的重建效果进行了研究。
The result of reconstructing a HR image is studied when the quantity of LR images is more than or equal 4 by using the spectral de-aliasing algorithm and the spatial iterative algorithm separately.
详细分析了投影噪声、投影方向数、场分布性质对重建精度的影响，并与代数迭代重建算法结果进行对比。
The effects of noise, view numbers and distribution are analyzed and this algorithm is compared with ART algorithm.
然后通过迭代反投影算法进行超分辨率重建。
Secondly, the super-resolution reconstruction is implemented using the iterative back projection algorithm.
本文对工业CT窄角扇束扫描方式下的迭代图像重建算法进行了研究。
In this paper, the author discusses in detail an efficient iterative image reconstruction algorithm in industrial computerized tomography (ICT) with the narrow fan-beam projection.
应用迭代算法则可以使重建图像质量有很大改善。
Then the image quality reconstructed by conventional analytical algorithms will be unsatisfactory.
在PET重建的迭代过程中，此种负反馈迭代算法利用最近的一次重建图像来更新有噪声的探测到的发射正弦图数据。
Methods the CF iterative algorithm was applied to update the noisy detected emission sinogram data using the latest reconstructed image in the iterative process of PET reconstruction.
用矩阵方法研究数字重建编码成像的迭代方法。
The iterative algorithm of digital reconstruction of coding imaging is studied by matrix analysis.
该方法利用正则化技术，通过迭代运算解求重建影像的最优解。
The method is based on the regularization technique, solving the constrained optimization by proposed iteration steps.
并通过大量的实验表明由这两种方法构造的初始曲线，经过场函数迭代，都可以得到满意的重建效果。
And it indicates the initial curve from two kinds of methods with massive experiments, we may obtain satisfaction reconstruction effect after function iteration.
随着计算机运算速度的飞速发展，以前只是被看成一种研究方法的迭代算法在图像重建中越来越引起人们的重视，并且已经在科研、工业和医学领域中得到了实际应用。
As the calculation speed of the CPU is fast developed, more consideration is paid to the iterative algorithms in tomographic reconstruction, which were only experimented as a research method before.
该方法基于MAP算法，通过利用梯度投影的方法对重建结果不断进行迭代优化得到最终的理想高分辨率影像。
In order to attain a high-resolution image, the algorithm is based on the MAP algorithm, solving the optimization by proposed iteration steps with using the gradient projection method.
锥束CT重建算法主要分为两类：迭代法和解析法。
The cone-beam CT reconstruction algorithm can be divided into to categories:iterative methods and analytical methods.
采用基于邻域拓扑的迭代树方法对工程图纸三视图三维重建进行了研究。
D model reconstruction is investigated from 3 orthographic engineering drawings using an iterative-tree method based on neighborhood-topology.
该算法重建图像所用的时间与LBP算法相当，而重建图像的质量与迭代算法相近，是一种精度较高的实时重建算法。
The image result is more accurate than that of LBP algorithm and similar to that of iterative algorithm. So this new method is a real-time and more accurate reconstruction algorithm.
计算结果表明，引入了属性矩阵和变超松弛系数的迭代算法能够更好地重建三维温度场。
The calculating results indicate that the 3-d temperature field can be reconstructed more accurately by the algorithm with property matrix and unfixed ultra-relaxation coefficient.
分析了小波双线性插值中高频外推阈值门限与重建图像峰值信噪比的变化关系，提出了峰值信噪比最大小波双线性插值迭代算法。
The variable relationship between the threshold of the extrapolation and its correspondent Peak of the Signal-to-Noise Ratio (PSNR) in the Wavelet Bi-linear Interpolation Algorithm is deeply analyzed.
通过迭代求解法和高斯金字塔模型，快速精确地估计得到配准参数，采用凸集投影（POCS）算法对图像序列进行了超分辨率重建。
Based on the set theoretic formulation, a projection onto convex sets (POCS) algorithm is applied to find the solution to face image reconstruction.
以三视图为重建单元，提出了一种可并行迭代式分层射影重建策略。
A parallel iterative hierarchical projective reconstruction strategy is presented, which is organized on the reconstruction unit of triple-view.
结果表明，对称块迭代算法较之常规迭代算法不仅重建速度快，而且重建图象精度高。
The results show that the algorithm presented here is more fast and has higher resolution factor than other.
为了避免迭代式重建策略所存在的累积误差效应，提出了一种线性回溯射影结构恢复策略。
To avoid the effect of cumulate error in conventional iterative reconstruction algorithms, a linear rewound method is put forward.
为了避免迭代式重建策略所存在的累积误差效应，提出了一种线性回溯射影结构恢复策略。
To avoid the effect of cumulate error in conventional iterative reconstruction algorithms, a linear rewound method is put forward.
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