机床与液压
機床與液壓
궤상여액압
MACHINE TOOL & HYDRAULICS
2014年
3期
121-123
,共3页
刘丽丽%李航%刘志威%马向南
劉麗麗%李航%劉誌威%馬嚮南
류려려%리항%류지위%마향남
单目视觉%大型零件%三维测量%测量不确定度
單目視覺%大型零件%三維測量%測量不確定度
단목시각%대형령건%삼유측량%측량불학정도
Monocular vision%Large parts%3D measurement%Measurement uncertainty
以单目视觉为基础,构建一种便携、大量程的在线测量曲面重构系统。当辅助靶标上的刚体测量头与曲面待测点垂直接触时,测头上的开关同步控制摄像机来获取靶标标志点的特征图像信息,进而由计算机进行图像处理得到各标志点的像面坐标,最后再经过坐标转换即可得到被测物体的三维坐标。通过对系统进行标定,提高了测量精度;通过摄像机的转站实现了最优视点规划分析,提高测量范围和自动化程度;另外,对系统测量不确定度进行论并提出了改进措施。
以單目視覺為基礎,構建一種便攜、大量程的在線測量麯麵重構繫統。噹輔助靶標上的剛體測量頭與麯麵待測點垂直接觸時,測頭上的開關同步控製攝像機來穫取靶標標誌點的特徵圖像信息,進而由計算機進行圖像處理得到各標誌點的像麵坐標,最後再經過坐標轉換即可得到被測物體的三維坐標。通過對繫統進行標定,提高瞭測量精度;通過攝像機的轉站實現瞭最優視點規劃分析,提高測量範圍和自動化程度;另外,對繫統測量不確定度進行論併提齣瞭改進措施。
이단목시각위기출,구건일충편휴、대량정적재선측량곡면중구계통。당보조파표상적강체측량두여곡면대측점수직접촉시,측두상적개관동보공제섭상궤래획취파표표지점적특정도상신식,진이유계산궤진행도상처리득도각표지점적상면좌표,최후재경과좌표전환즉가득도피측물체적삼유좌표。통과대계통진행표정,제고료측량정도;통과섭상궤적전참실현료최우시점규화분석,제고측량범위화자동화정도;령외,대계통측량불학정도진행론병제출료개진조시。
A simple portable and large-range on-line measurement system was presented based on monocular vision for surface reconstruction. When the rigid body measuring head of the auxiliary target contacted perpendicularly with the measured point surface, the switching on the measuring head synchronously controlled camera to obtain the target mark image information. Further by computer image processing,the index point image plane coordinates were gotten,At last through coordinate transformation,the 3D coordinates of the object to be measured could be gotten. System calibration can improve the measurement accuracy. Through the camera transfer sta-tion,the optimal viewpoint planning analysis is realized,so the measurement range and degree of automation are improved. In addi-tion,the measurement uncertainty of the system was discussed and the improvement measures were proposed.