图像法空间运动物体尺寸测量的畸变特性研究  

Research on distortion characteristic of size measurement of moving objects with image method

作　　者：刘国平[1] 陈伟民[1] 雷小华[1] 朱云[1] 章鹏[1] 

机构地区：[1]重庆大学光电技术及系统教育部重点实验室,重庆400030

出　　处：《传感器与微系统》2008年第3期39-42,共4页Transducer and Microsystem Technologies

基　　金：国家科技攻关引导计划资助项目(2002BA105C);重庆市科技攻关重大专项计划资助项目(7289)

摘　　要：图像法用于空间运动物体尺寸测量时,由于图像传感器和物体存在相对运动关系,造成测量尺寸的畸变。在分析图像传感器动态测量过程的基础上,抽象出动态采集的数学模型,分析了传感器采集频率、被测物体运动速度等各个参数对动态采集畸变特性的影响,并进行了实验研究。研究表明:在动态模型的基础上优化采集参数可以减小畸变,进一步修正畸变数据可以提高动态测量的准确度。Size distortion occurs when image method is used to measure moving object size because there is relative movement between the image sensor and object. According to the dynamic measurement procedure of image sensor, mathematic modals of dynamic acquisition are created, and factors are analyzed which affect distortion characteristic, such as sensor sampling frequency, moving velocity of measured object, etc. Then experiments are finished. It indicates that distortion can be reduced by the means of optimizing the sample parameters based on the mathematic modals, and it can also improve the dynamic measurement accuracy by amend distortion data.

关 键 词：图像法 动态测量 畸变特性 准确度 

分 类 号：TP751.2[自动化与计算机技术—检测技术与自动化装置]