CAJ | 학술논문

介绍采用线阵CCD传感器的投影放大法线径测量系统的信号处理方法。介绍对CCD输出信号进行高通、低通滤波预处理的方法。着重分析了基于微分法的图像边缘检测算法，对CCD视频信号求取其一阶微分的绝对值，求其局部重心点作为其边缘特征点。实验结果表明，采取基于微分法的重心算法检测图像边缘特征点，测量系统的重复精度优于1μm。本文还介绍了对测量系统的线性、非线性标定方法。
개소채용선진CCD전감기적투영방대법선경측량계통적신호처리방법。개소대CCD수출신호진행고통、저통려파예처리적방법。착중분석료기우미분법적도상변연검측산법，대CCD시빈신호구취기일계미분적절대치，구기국부중심점작위기변연특정점。실험결과표명，채취기우미분법적중심산법검측도상변연특정점，측량계통적중복정도우우1μm。본문환개소료대측량계통적선성、비선성표정방법。
A signal process method in diameter measurement system usingprojection and magnification method with linear CCD sensor. This paper proposes a CCD signal pre-treating method with HPF and LPF and analyzes the image edge-detect-ing algorithm based on differential method. The absolute value of the first-order differential value is obtained and its local center of gravity as the characteristic point of the edge is calculated by the algorithm. The experimental result shows that the repeated precision of the measurement system using center of gravity algorithm based on differential method is less than 1μm. Finally, the linear and nonlinear calibrate method of the measurement system is introduced.