The precise location of the laser spot center is an important step to raise the measurement resolution in large 3-D surface profile measuring system of laser scanning.
在激光扫描大型三维曲面测量中， 激光光斑中心的准确定位是提高测量分辨力的关键。
A method to preprocess the CCD digital image of laser spot is proposed.
提出了一种对激光光斑的CCD数字图像进行预处理的方法。
This article puts forward a new method "laser spot" for measuring the shape of plate.
本文提出了一种新的板形检测方法激光光斑法。
The laser spot diameter and its intensity distribution are measured with a scanning pinhole.
利用针孔扫描的原理，测量了聚焦光斑尺寸及光斑内的能量分布状况。
The wide use of laser in various fields brings forward higher demand for quality of the laser spot.
激光在各种领域的广泛应用对激光光斑的质量提出了越来越高的要求。
A new method for the automatic calculation of the low contrast laser spot center base on contour growing.
提出一种基于边界生长的自动化低对比度激光光斑中心的定位新方法。
The invention relates to a laser spot collector with low frequency and narrow pulse for a laser transmitter.
本发明涉及一种激光发射机用低频窄脉冲激光光斑采集器。
Spatial non-uniformity is measured by applying a small laser spot scanning across the detector sensitive area.
面响应不均匀性的测量是利用小的激光光斑在探测器的灵敏面进行二维扫描。
In the rapid prototyping machines, the position accuracy of laser spot has a direct influence on the accuracy of parts.
在激光快速成型机中，激光扫描精度直接影响到零件成型精度。
Steering commands projected into the field of view direct the operator to move the cross hair to the laser spot location.
投射到视野中的指令指导操作人员将十字线移到激光点位置。
The traditional measuring methods lack multi-dimension display for laser spot profile and systematic analysis for laser parameters.
传统的各种测量方法缺乏对光斑外观轮廓的直观多维显示和对参数的系统测量分析。
The coaxiality is computed from the measured coordinates of laser spot center and measured circumference data in several sections of holes.
同轴度由多个截面的光斑中心坐标值和圆周采样数据按一定的方法计算。
The structure of the imaging laser detecting system simulated in the lab is presented at first. Then methods of laser spot location are deduced.
首先介绍了实验室模拟成像型激光探测系统的构成，而后阐述了激光光斑定位的常见算法。
The results show that great thermal-stress exists in the front of laser spot. And the simulation results are in agreement with experimental results.
结果表明，激光烧结过程中，在光斑中心的前端存在着极大的热应力，这与实验结果基本一致。
The laser spot collector is characterized by high efficiency and automation, on-line detection capacity, good commonality and high cost performance.
本发明的 特点是效率高，自动化程度高，能够在线检测，通用性好，性价比高。
For the precise location of laser spot center on the complex target, a method based on residual pruning with geometric feature constraints is proposed.
为满足复杂靶标背景下激光光斑形心的高精度定位要求，提出了一种基于几何特征约束残差修剪的定位方法。
The laser spot of the upright incidence to train wheel is imaged on CCD. While the train wheels are frayed, the image of spot will take place displacement.
激光束垂直入射到火车车轮上，再用透镜将火车车轮上的激光光斑成像到CCD上，当火车车轮产生磨损时，CCD上激光光斑的像也将发生位移。
This method USES laser beam oblique incidence to the test side of plate, and the laser spot of tested plate will be imaged to CCD target surface by industrial video camera.
该方法采用激光斜射到待测钢板侧面上，用工业摄像机将被测板上的激光光斑成像于CCD靶面。
It is very important to measure the laser spot energy distribution in the field for describing the laser beam performances and evaluating the lasers and operational performances.
激光远场光斑测量对描述激光束的远场性能，评价激光器以及系统的实际工作性能具有重要意义。
But now the solid focused laser spot is commonly used in this technology, and the type of material feeding is the lateral material feeding or coaxial material feeding outside the laser.
目前此项技术中激光聚焦光斑普遍采用实心光斑，送料方式为单料管光外侧向送料或多料管光外包围同轴送料。
This is because they used a small laser spot in the process; it was less than 500 micrometers in diameter — about half the diameter of laser spots used in traditional material deposition.
因为在沉积过程中，他们使用的是直径小于500微米的激光斑点，这大概是传统材料沉积中使用的激光斑点直径的一半左右。
Natural light, scattering light and diffracted ray are removed effectively with those methods. Then, laser spot keeps stable, system precision is improved and an ideal result is obtained.
这些预处理方法有效地消除了自然光线、散射光线和衍射光线对系统的干扰，使激光光斑图像保持稳定，起到提高系统精度的作用，得到了较为理想的结果。
In the large optical components topography measurement system, the accuracy of measurement is greatly related to laser spot segmentation, centroid extraction and back surface spot removal.
大口径光学组件面形检测系统中，激光光斑的分割、质心提取和背表面光斑的自动剔除算法关系到系统的检测精度。
Laser spot detection is the key technique used in optical measurement.
激光光斑中心检测是光学测量中常用的关键技术。
Laser spot detection is the key technique in the imaging laser detecting system.
激光光斑的精确定位是成像型激光探测系统中的一项关键技术。
Laser spot welding will take the place of the traditional joining methods such as resistance welding and rivet connection for its high precision and high efficiency.
激光点焊具有高精度，高效率等特点，在航空航天工业中有望替代传统的电阻点焊和铆接等连接方法。
Laser spot positioning algorithm is studied in this paper, and program which can automatically change the spot images collected by the detection system to spot location data is designed.
就激光光斑中心定位算法进行了研究，设计了将检测系统采集到的光斑图像自动转化成光斑位置数据的程序。
Laser spot positioning algorithm is studied in this paper, and program which can automatically change the spot images collected by the detection system to spot location data is designed.
就激光光斑中心定位算法进行了研究，设计了将检测系统采集到的光斑图像自动转化成光斑位置数据的程序。
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