Then, by using the camera calibration parameters, 3D coordinates of each feature point in the machine coordinate system were calculated.
由摄像机标定参数，进一步计算出各特征点在机器坐标系中的三维坐标；
Lastly, the mathematical models of coordinate conversion between workpiece coordinate system and machine coordinate system are represented.
最后建立了五坐标数控机床不同结构类型的坐标转换(工件坐标系—机床坐标系)数学模型。
Based on the switch process of work piece coordinate system to machine coordinate system, explained the function and principle of aiming at tool operation.
根据工件坐标系向机床坐标系的坐标变换过程，说明对刀操作的作用和原理。
The application of CAD system in the coordinate measuring machine (CMM) measurement was introduced.
对CAD系统在三坐标测量机测量中的应用进行了介绍。
The measuring system consists of a CNC coordinate measuring machine , PH9/PH10 probe head and LB? 12 non-contact laser probe.
由程控三坐标测量机、PH9／PH10回转体和LB—12型非接触激光测头构成测量系统；
Positioning accuracy in NC machines is defined by how accurately the machine can be positioned to a certain coordinate system.
数控机床中的定位准确度被定义为机床在特定坐标系统中被定位的准确程度。
Explains the application of workpiece coordinate system rotation in machine hole on the cone surface by machining a practicable manufactured product.
通过实例说明在数控加工中，通过工件坐标系旋转加工圆锥面上孔的方法。
This thesis mainly focus on the system of flexible three coordinate measuring machine based on robotics and relevant theoretical technical basis.
本论文主要研究柔性臂三坐标测量机系统及相关理论与技术。
In order to generate the motion commanders of CNC machine tools, the coordinate conversion algorithm must be added into CNC system in 5-axis machining.
在5轴加工中，为使机床CNC系统能根据刀位点数据实时生成机床运动坐标，必须在CNC系统软件中加入机床运动空间坐标变换算法。
In the 3d machine vision measuring system, the edge extraction of a 2d image is the prerequisite for 3d coordinate calculation.
在三维机器视觉测量系统中，二维数字图像边缘提取是进行三维坐标计算的必要前提。
Based on a nc machine tool, the coordinate system, reference point and their relations are analysed. Several useful presetting cutter methods are also presented in this paper.
以数控车床为例，分析了数控机床使用中各种坐标系、参考点及其相互关系，从实用角度介绍了几种常见的对刀方法。
In order to ensure the coherence of the measuring data, measuring-coordinate system must be created firstly before the part is measured and checked by coordinate measuring Machine (CMM).
在产品的误差检验和反向工程中，为了实际测量的需要以及保证测量数据的一致性，用三坐标测量机进行测量之前必须建立相应的测量坐标系。
Traditionally, the surface contour test instrument or three-coordinate measuring machine is used in 3-d curved surface measuring system.
测量三维曲面轮廓的传统方法是采用表面轮廓仪式或三坐标机。
The coordinate-measuring system integrates vision sensor, laser scanner, contact probe and CNC machine.
多传感器测量系统集成视觉传感器、激光测头、接触式测头和数控装备。
The first work was to build an error model of target machine tool by combining the multi-body system theory and homogeneous coordinate transform.
首先结合多体系统理论和齐次坐标变换建立目标机床的误差模型；
The workpiece zero is the origin of the workpiece coordinate system. When workpiece were set up on NC machine center, normally we need define more than one workpiece zero.
工件零点是工件坐标系的原点，在数控镗铣加工中心上，一次装夹需要设置多个工件零点。
In the position usage of machine vision system, it must unify coordinate systems first to connect camera coordinate system with moving coordinate system, which is called calibration.
在视觉系统的定位使用中，必须先统一坐标系，将视觉系统中的镜头坐标系及运动坐标系联系在一起，即标定。
In the position usage of machine vision system, it must unify coordinate systems first to connect camera coordinate system with moving coordinate system, which is called calibration.
在视觉系统的定位使用中，必须先统一坐标系，将视觉系统中的镜头坐标系及运动坐标系联系在一起，即标定。
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