基于双代数的物体投影重建方法是一种隐式重建方法。
Projective reconstruction based on double algebra is an implicit method.
本文介绍了一种可以对来自于单一圆轨道的锥束投影数据进行精确重建的分析方法。
An analytical method allowing exact reconstruction from cone-beam projection data which are detected from a single circular orbit is discussed.
为了改善超分辨率重建图像的效果，提出了一种基于线过程模型的凸集投影方法。
In order to improve the superresolution reconstruction of image, a method of projections onto convex sets (POCS) based on the line process modeling is proposed.
比较详细地研究了在有限投影角条件下图像重建问题，给出了两种有实际意义的外推数据方法。
We study the problem of image reconstruction more careful-ly, under the condition of limited projection angles, and give two kinds of extrapolated da-ta methods with practical sense.
为实现小凸多面物体面形快速重建，提出了基于投影轮廓的新方法。
A projective silhouette based method was proposed to reconstruct the shape of little convex polyhedron.
模拟实验和真实实验数据结果表明，该射影重建方法具有鲁棒性好、收敛性好以及重投影误差小等优点。
The experiments with both simulate and real data show that the method is efficient, robust and has good property of convergence and small re-projection errors.
提出了一种多分辨投影匹配与对应点分析相结合的血管轴重建方法。
This paper propose a novel method of Reconstruction of Vessel Axis on matching of multi-resolution projections and analyzing of corresponding points.
方法42例骨肿瘤患者行16层螺旋CT容积扫描后，做多平面重建(MPR)、最大强度投影(mip)、表面遮盖(SSD)、容积漫游(VRT) 4种后处理。
Methods Reconstruction techniques were used after 16-slice ct imaging had been completed for 42 patients with bone tumors. The techniques include MPR, MIP, SSD and VRT.
论述了由单幅X射线投影进行轴对称物体密度重建的正则化方法。
The regularization method for density reconstruction of axially symmetric objects using a single Xray projection is described.
新方法利用恢复投影数据的重建图像冗余信息优化非局部均值权重。
The new method exploits the redundancy of information in the image reconstructed from the restored projection data by optimizing non-local weight.
本文提出一种用图像描述放射治疗计划的方法，并利用直接反投影图像的重建算法进行放射治疗计划设计。
A method of image processing was developed to describe the radiotherapy treatment planning, and the back-projection reconstruction method was used to program the radiotherapy treatment planning.
对由锥形束x线投影重建体积数据的直接体积成像方法进行了理论研究。
The direct volume imaging (DVI) means the reconstruction of volume data from a series of cone beam X ray 2d projections.
提出一种可以在联合代数重建方法中快速计算投影系数矩阵并优化内存的方法。
An efficient way to compute projection coefficient matrix together with memory optimization is presented in this paper.
还针对编码针孔准直器的投影混叠问题，讨论了投影数据完备性和体积图像的重建方法。
Because of the projection image overlap due to coded-pinhole collimator, the completeness of projection data and volume image reconstruction algorithm are discussed.
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.
为提高其重建速度，提出了一种利用对称性并结合递归技术的方法来减少该算法的反投影运算量。
To improve its reconstruction speed, a method combining symmetry with recursion technique to reduce backprojection calculation is presented.
为抑制计算机层析造影（CT）系统重建图像中出现的金属伪影，提高图像的质量，采用一种基于金属投影非线性权重衰减的方法进行校正。
A metal artifacts reduction method using nonlinear weights was developed to suppress metal artifacts in X-ray CT(computerized tomography) images to improve the image quality.
该方法以投影为基础，以平高分解为手段，通过在多个投影平面内逐步确定平面、高程信息实现特征线提取及模型重建。
This study proposed an algorithm for building model reconstruction from airborne laser scanning data, based on feature line detection and separation of planimetric and height computations.
提出了一种利用双平面正交投影重建血管截面的方法。
In this paper, a new approach to reconstruction of transverse cross sections of arteries from biplane orthogonal projections is proposed.
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。
We select the special relaxation parameter and put the projection matrix into many blocks according to the projection angles in the reconstruction procedure.
为了提高滤波反投影算法图像的重建效率，本文利用参数表的方法对程序作了优化，使重建速度提高了近100倍。
For the sake of the image reconstruction efficiency we shortened the reconstruction time almost 100 times by parameter table method.
提出了一种新的定标方法和投影模板检测算法，并构造完成了有源三维重建实验系统。
First, a new calibration method and a detecting algorithm of projected grid pattern are proposed. Then an active 3D shape retrieval system is established.
方法对24例临床疑有颅内动脉瘤患者进行3DCTA检查，后处理技术包括最大信号强度投影（MIP）以及容积重建（VRT）。
Methods 24 patients who suspected as harboring cerebral aneurysms by referring physiciansunderwent 3DCTA. 3D post processing techniques including MIP and VRT after bone subtraction.
目的比较最大强度投影(mip)和表面遮盖显示(SSD)两种三维螺旋CT门静脉成像(3d - SCTP)重建方法的成像质量，初步评价3d - SCTP对肝硬化门静脉高压患者的临床应用价值。
Objective to compare the image quality of three-dimensional spiral ct portography (3d-sctp) produced by SSD with that by MIP and to make preliminary evaluation for its clinical application.
为了在普通PC机上实现计算机断层扫描(CT)快速重建，提出了利用查找表和极坐标反投影快速重建方法。
In order to realize ct fast reconstruction on an ordinary PC, a fast reconstruction process using look-up table and polar coordinate back-projection was presented.
介绍了由投影重建图像的基本原理，对扇束滤波反投影重建算法进行了分析，并针对该算法的特点提出了一种提高算法求解速度的方法。
In this paper, we propose a new algorithm based on sub-aperture and filtered back-projection algorithm to estimate the anisotropy of objects scattering centers in wide-aperture imaging.
对应特征点的三维重建是根据三角测量的方法计算其投影矩阵，然后用奇异值分解求出特征点的三维齐次坐标。
Feature points' 3d coordinates are computed through singular value decomposition of projector matrix, then compute projector matrix by triangulation.
对应特征点的三维重建是根据三角测量的方法计算其投影矩阵，然后用奇异值分解求出特征点的三维齐次坐标。
Feature points' 3d coordinates are computed through singular value decomposition of projector matrix, then compute projector matrix by triangulation.
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