机械工程与自动化
機械工程與自動化
궤계공정여자동화
MECHANICAL ENGINEERING & AUTOMATION
2014年
5期
39-41
,共3页
盾构%姿态测量%图像滤波%边缘检测%定位算法
盾構%姿態測量%圖像濾波%邊緣檢測%定位算法
순구%자태측량%도상려파%변연검측%정위산법
shield%attitude measurement%image filtering%edge detection%positioning algorithm
振动对盾构测量系统的影响较大，提出了基于光阑的测量方案对原系统加以改进。鉴于光斑存在随机噪声污染，采用中值滤波技术，有效地降低了其对光斑中心定位的影响。对多种边缘检测算子作了比较研究，并利用其对激光光斑进行边缘检测，实现了聚焦光斑的准确定位。
振動對盾構測量繫統的影響較大，提齣瞭基于光闌的測量方案對原繫統加以改進。鑒于光斑存在隨機譟聲汙染，採用中值濾波技術，有效地降低瞭其對光斑中心定位的影響。對多種邊緣檢測算子作瞭比較研究，併利用其對激光光斑進行邊緣檢測，實現瞭聚焦光斑的準確定位。
진동대순구측량계통적영향교대，제출료기우광란적측량방안대원계통가이개진。감우광반존재수궤조성오염，채용중치려파기술，유효지강저료기대광반중심정위적영향。대다충변연검측산자작료비교연구，병이용기대격광광반진행변연검측，실현료취초광반적준학정위。
The shield measurement system can be serious impacted by vibration ,in this paper ,an improved measurement program based on aperture is proposed .Since the presence of random noise in the spot ,the median filtering method is used to effectively reduce the impact of these defects on the spot center location .A comparative study on a variety of edge detection operators on the required accuracy is made .Since the focused spot approximates a circle ,the method of least squares is used to fit the circle .At last , the accurate position of the focused spot is obtained .
