In this paper, we solve convolution equation based on Vandermonde Matrix and the method of image displacement elimination in space domain that we propose, so that we can reconstruct sectional image quickly.
本文利用Vandermonde矩阵求逆的特性和我们提出的空间域图像移位消去法，可以用较少的计算量求解出卷积方程组，从而快速重建断层像。
We propose a new method-image displacement elimination method, it overcome shortcomings of FDDI and can solve convolution equation set in space domain quickly.
我们利用Vandermonde矩阵求逆的特性和我们提出的空间域图像移位消去法，可以用较少的计算量求解出卷积方程组，从而快速重建断层像。
Expressions of stress field and displacement field are deduced via image method and mend of Cerruti solution. Meanwhile, the sensibilities of soil layers parameters, outer diameter and buried depth to vertical displacement and horizontal displacement are analyzed.
借助源—汇影像手段和Cerruti解进行剪应力修正，推得了在顶管挤入过程中周围土体内的位移场和应力场表达式，并研究了土层参数、管径、埋深等各参数对水平、竖向位移的影响的敏感性。
Micro-displacement; laser triangulation measurement; optical system; spot image; slantwise magnification
微位移；激光三角法；光学系统；斑点成像；倾斜放大率
The excavation of soil nailing the whole process of numerical simulation studies show that soil nailing axis of step with the excavation of the number of changes, and gradually increased to stabilizing, the upper soil nail on the soil bound by a greater impact; slope displacement Monitoring results indicate that, maximum at the top of Slope, from the status of the seven shear strain incremental image can be seen, even after the completion of support, at the top of Slope may also sliding.
对土钉支护开挖的全过程数值模拟研究，表明土钉轴力随开挖的步数而变化，逐步增加到趋于平稳，上部土钉对土体的约束影响更大；边坡位移监测结果显示，最大值位于坡顶；从工况七的剪应变增量云图可以看出，即使支护完成后，坡顶也有可能滑动。
The images of oil displacement process were collected and translated into numerical signals on computer by the image collecting system.
特别对泡沫的挤压与占据作用、乳化油滴渗流、泡沫的选择性堵塞作用的分析结果表明，多元泡沫复合驱油过程中形成 3个条带：前沿条带是混气复合体系及乳状液渗流；中间条带既有前沿条带中的两种渗流，也有泡沫渗流；后沿条带无油，以泡沫渗流为主。
Taking this as a base and combining correlation analysis method of digital image frequency domain, photodynamics experimental study is made for displacement field of tri-point curved beam interface of CFRP strengthening concrete, and the relation curve, between shear stress and slippage, of plastering head end of carbon fibre sheet material.
以此为基础，结合数字图像频域分析法对CFRP加固混凝土三点弯梁界面位移场进行光力学试验研究，得到了碳纤维片材粘贴端部界面剪应力与滑移量之间的关系曲线。
Based on image method and injected with equivalent layer method, the analytical solution of ground displacement and stress caused by shallow buried circular tunnel excavation under existing highway foundation is deduced.
在镜像法原理的基础上，引入等效模量当层法，推导出了在有上覆不同材料下浅埋圆形隧道开挖引起地层位移、应力及地表沉降的解析分布规律。
For particular objects such as tall buildings, huge bridges and etc. in civil engineering, a two dimensional displacement surveying system based on image processing technology is put forward. As far as structure vibrations at not very high frequencies under wind load or seismic load are concerned, the results can explain their dynamic behavior well.
对于大型土木工程结构，例如高层结构在风振作用下的位移，桥梁在动荷载作用下的位移等等，难以寻觅固定不动的参考点，传统的多种位移监测方法就很难施展，构成了土木工程结构动态位移监测的瓶颈。
The hydrophilic and hydrophobic media with different pores were experimented with a micro imitated glass model to analyze the oil displacement process of alkaline-surfactant-polymer foam flooding using the image analysis technology.
利用微观仿真光刻玻璃模型进行了驱油实验，对于亲水及亲油性不同的介质，利用图像采集系统将驱替过程的图像转化为计算机的数值信号，然后采用图像分析技术对碱表面活性剂聚合物泡沫复合驱的微观驱油特性进行了分析。
Compared with the conventional 2-D coordinate measuring systems, the new system has great improvement at measuring speed, aiming accuracy, measuring function and degree of automation The new system consists of two parts image measuring system of displacement and image autofocusing and aiming system The displacement measuring system in which CCD camera is used for locating the optical scale not only processes the advantages of absolute code measuring system powerful noiseproof feature, good long-time stability, easily compensated ruling error of optical scale, but also has the advantages of morden numerical systems easy numeralization and intelligence The autofocusing and aiming system in which CCD camera is applied for gaining the defocusing information and edge location information of workpiece enjoys the advantages of fast autofocusing, accurate result, high accuracy of edge detection and wide range of measured parameters, etc The feasibility of the new 2-D measuring system is analyzed in this thesis and related parameters are calculated.
详细本文在分析了现有二维中小尺寸测量系统中，光学仪器的光学读数系统和调焦、瞄准系统的优缺点之后，结合现代数字化仪器的优缺点，提出研制一种新的二维图像测量机系统。与传统二维坐标测量系统相比，新型系统在测量速度、瞄准精度、测量功能及自动化程度等方面都有较大的提高。该系统由图像式位移测量系统和图像式自动调焦、瞄准系统组成。图像式位移测量系统采用CCD摄象机拾取光学线纹尺的位置信息，既具有传统光学式绝对码位移测量系统的优点—抗干扰能力强、长期稳定性好、光学标尺误差易于补偿等优点，又具有现代化数字仪器易于微机化、智能化的优点。
In order to obtain a reliable displacement field for digital speckle image correlation technique, a new displacement analysis method based on moving least squares analysis is proposed and a reliable strain field is obtained.
为了应用数字图像相关方法得到可靠的位移场，本文提出应用移动最小二乘法对含噪声的位移场进行拟合，进而得到可靠的应变场。
It is complicated and difficult to construct, uses a large amount of optically clear calcite produces a lateral displacement of the transmitted beam, gives rise to a distorted image, and produces less than 100% linearly polarized light.
这是一个复杂而艰难的构想，用一块大的清晰的方解石晶体产生沿侧向传播的光束，通过全反射原理，产生100%的完全线偏振光。
In the simulation, we mainly considering the below three major processes, including the image acceleration of highly charged ions, the charge exchange processes of highly charged ions with surfaces, the thermal vibration and displacement of target atom and their effect on the projectile's path, the energy loss of the projectile and so on.
模拟中主要包括以下几个方面：入射离子所受的来自于固体的镜像加速过程，入射离子与固体的电荷交换过程，靶原子的热振动和移位对入射离子运动路径的影响以及入射离子的能损等方面。
Results After 2D/3D image registration, the relative displacement and angle were calculated.
采集成人腰椎CT影像，并采集两个不同位置时脊柱互成直角的X线平片，进行腰椎L3、L4三维重建，并在软件中建立虚拟X线摄像场景进行腰椎投影，再现互成直角的虚拟X线影像，采用2D/3D图像配准方法与真实X线影像相配准，还原摄平片时L3、L4的位置，将配准结果导入图像处理软件后计算两种位置之间L3的相对位移及角度变化。
The sensor is linear in principle i. e. the image spot of receiver is linearly proportional to the displacement of the object.
本传感器在光学原理上是线性的，即探测器表面上象的变化与目标面的位移量成线性比例关系。
Based on the system, we cooperated with Xian sicong Laser Co., Ltd in developing Two-dimension Laser-positioning Image Displacement Sensor and Road Level Measurement Instrument.
基于嵌入式实时激光定位系统，我们与西安西光激光科技有限公司合作研制开发了二维激光定位图像位移传感器和LS-3型公路弯沉测量仪并提出了该系统在其它一些领域的应用。
The digital image processing technique was applied to dynamic displacement measurement in truss-beam local failure test.
将数字图像测量技术应用于桁梁结构局部破断试验中结构动位移的测量。
The contraction force of femoral que adriceps muscle and the action force of tibiofemoral joint were applied to the knee joint with intact ACL and then with amputated ACL, and the anteroposterior displacement and rotation angle of the knee joints were measured with strain measurement tech nique and reconstructed the image with computer image processing technique.
方法标本取自新鲜尸体的5只膝关节，分别在ACL完整和切断的情况下对标本施加股四头肌力和腔股关节作用力，采用应变计测量技术和计算机图形处理技术对受载膝关节位移和转角进行测量和图像重建。
Study on an Image Absolute Code Displacement Measuring System
图象式绝对码位移测量系统的研究