摘要
应用图像处理技术进行野外火车钢轨测量实验时,不可避免遇到外界强太阳光的干扰问题。为了能有效消除太阳光的干扰作用,采用了激光锁定成像的方法,通过外接控制电路触发激光器并让电荷耦合器件同步采集图像,运用激光锁定成像原理,获得高质量的钢轨轮廓曲线。通过大量实验验证,激光锁定成像的应用使得钢轨磨耗输出的结果更稳定,而且能够适应较大范围内变化的外界环境光干扰。结果表明,激光锁定成像能保证测量系统的稳定性,从根本上消除测量过程中出现的各种随机误差。
When the rail wear measurement is carried out in the wild,the interference from outside strong sunlight is inevitable.In order to eliminate the interference effect of sunlight effectively,a laser lock-in imaging technology was utilized.An external controlling circuit triggered the lasers and CCD image acquisition synchronously,and high quality image was achieved by means of laser lock-in imaging method.Lots of experiments verified that laser lock-in imaging makes the output of the rail wear more stable and adapt to a wide range interference of outside complicated background light.Experimental results show that laser lock-in imaging can guarantee stability of the measurement system,fundamentally eliminating the random measurement errors.
出处
《激光技术》
CAS
CSCD
北大核心
2012年第3期353-356,共4页
Laser Technology
基金
国家八六三高技术研究发展计划资助项目(2010AAJ206)
关键词
激光技术
背景光
锁定成像
钢轨磨耗
laser technique
background light
lock-in imaging
rail wear
