CAJ | 학술논문

提出一种基于摄像机标定的非接触式接触线几何参数检测方法：在 Matlab 软件平台基础上,对 CCD摄像机采集到的接触线二维图像进行预处理；利用迭代阈值法,对图像中由车载激光器发射到接触线上所形成的激光光斑的中心点进行定位；最后,根据摄像机针孔成像模型,将该激光光斑点在图像坐标系中的坐标与该点由摄像机标定的世界坐标系中的三维空间坐标建立对应关系,并据其算出接触线的几何参数。将用此方法计算与用光学测量仪对同一段实际线路测量的结果进行比较得知,此方法求得的拉出值与光学测量仪的实测值之差小于11 mm,所得导高之差小于10 mm。该结果表明：此方法较准确地计算出接触线导高、拉出值,可满足检测的需求。
제출일충기우섭상궤표정적비접촉식접촉선궤하삼수검측방법：재 Matlab 연건평태기출상,대 CCD섭상궤채집도적접촉선이유도상진행예처리；이용질대역치법,대도상중유차재격광기발사도접촉선상소형성적격광광반적중심점진행정위；최후,근거섭상궤침공성상모형,장해격광광반점재도상좌표계중적좌표여해점유섭상궤표정적세계좌표계중적삼유공간좌표건립대응관계,병거기산출접촉선적궤하삼수。장용차방법계산여용광학측량의대동일단실제선로측량적결과진행비교득지,차방법구득적랍출치여광학측량의적실측치지차소우11 mm,소득도고지차소우10 mm。해결과표명：차방법교준학지계산출접촉선도고、랍출치,가만족검측적수구。
In this paper,the non-contact geometric parameters detection method for contact lines based on cam-era calibration was put forward.On the platform of Software Matlab,the contact line images acquired by the CCD camera were pretreated.Then,the center point of the image laser spot was located via the iterative threshold method.Lastly,with the camera pinhole model and camera calibration,the relationship between the two-dimensional coordinates of the laser spot in the image-coordinate system and the three-dimensional space coordinates of the laser spot in the world-coordinate system was established,and the geometric parameters were calculated in accordance.The proposed method was compared with results measured with the optical measuring instrument on the same section of actual lines.The stagger difference was less than 1 1 mm and the conductor height difference was less than 10 mm.It shows that with the proposed method the height and stag-ger of the contact line can be calculated accurately and the test requirements can be satisfied.