相机姿态校正模型的红外瞄具零位走动量测量  

Infrared Sight Zero Detection Based on Camera Pose Correction Model

作　　者：李延风[1] 安志勇[1] 李丹妮[1] 王劲松[1] 

机构地区：[1]长春理工大学光电工程学院,吉林长春130022

出　　处：《中国激光》2014年第9期207-212,共6页Chinese Journal of Lasers

基　　金：吉林省重大专项科技发展计划项目新型光电子器件及应用技术项目(20100610);科技型中小企业技术创新基金数字式宽光谱零位测量仪项目(11c26212200565)

摘　　要：根据红外瞄具零位走动量高精度测试需求,提出了一种基于相机姿态自适应数学模型的红外瞄具零位走动量测量方法。设计了一种相机姿态自适应修正新算法,建立了相机姿态修正模型,并将其应用于零位走动量测量,克服了由于CCD相机倾斜引起零位走动量测量误差的难题。基于图像判读技术,采用重心法对针孔靶及瞄准分划图像进行定位,利用Zernike矩不变性质实现边缘点的亚像素细分。构建了实验系统,经实验验证,测量精度优于0.02mil(1mil=0.254cm),满足红外瞄具零位走动量的高精度测试需求。According to the high precision testing requirements on aiming at the baseline variation of infrared sight,a measuring method of infrared sight zero momentum based on camera pose adaptive mathematical model is proposed.A new adaptive algorithm of camera pose is designed.A camera pose correction model is established,which is applied to zero momentum measuring system,solving aproblem of zero momentum measuring error caused by camera tilting.The pinhole targets and sighting divide image are located by gravity method,and sub-pixel subdivision of edge points is achieved by Zernike orthogonal moments.An experimental system is constructed.The measurement accuracy is superior to 0.02 mil（1 mil=0.254 cm）which is verified by experiment.The result meets the high precision testing requirement of infrared sight baseline variation.

关 键 词：测量 机器视觉 图像处理 零位走动量 姿态校正 图像判读 

分 类 号：TH74[机械工程—光学工程]