近年来,我国建设了多个国家战略石油储备的大型地下洞库,但大型地下洞库的容量计量方法的研究尚不成熟。为了解决基于三维激光扫描技术的大型地下储油洞库容量计量方法数据量大、计算较繁琐等问题,提出了点云数据水平截面积计算的矩形...近年来,我国建设了多个国家战略石油储备的大型地下洞库,但大型地下洞库的容量计量方法的研究尚不成熟。为了解决基于三维激光扫描技术的大型地下储油洞库容量计量方法数据量大、计算较繁琐等问题,提出了点云数据水平截面积计算的矩形微元法。采用该方法对Leica Scan Station P40三维激光扫描仪测量的某地下储油洞库点云数据进行处理,得到容积表;还将矩形微元法与三角形法计算结果进行比对,对于比较规则的图形,两者计算偏差在0.4%内,满足《GB 50455—2008地下水封石洞油库设计规范》中规定的测量误差不应大于0.5%的要求;对于存在不连续区域的图形,矩形法更加方便和准确。矩形微元法计算速度快,避免了三角形法用于复杂区域可能出现的面积重复计算问题,提高了计算准确性,具有更好的适用性。展开更多
In this paper, a flexible high-precision calibration method suitable for industrial field was proposed. The complexity of the coordinate transformation was simplified by choosing the camera coordinate system as the un...In this paper, a flexible high-precision calibration method suitable for industrial field was proposed. The complexity of the coordinate transformation was simplified by choosing the camera coordinate system as the unified reference coordinate system. A flexible planar calibration pattern was introduced to the calibration process, which can be arbitrarily placed and from which the known feature points can be extracted to construct other unknown feature points. With the known intrinsic parameters, the laser projector plane equation was fitted by the multi-noncollinear points, which were acquired through the principle of triangulation and the projective invariance of cross ratio. With this method, the strict alignment and multiple times of coordinate transformation can be avoided. Experimental results showed that the arithmetic mean of the root mean square(RMS) error of distance was 0.000 7 mm.展开更多
文摘近年来,我国建设了多个国家战略石油储备的大型地下洞库,但大型地下洞库的容量计量方法的研究尚不成熟。为了解决基于三维激光扫描技术的大型地下储油洞库容量计量方法数据量大、计算较繁琐等问题,提出了点云数据水平截面积计算的矩形微元法。采用该方法对Leica Scan Station P40三维激光扫描仪测量的某地下储油洞库点云数据进行处理,得到容积表;还将矩形微元法与三角形法计算结果进行比对,对于比较规则的图形,两者计算偏差在0.4%内,满足《GB 50455—2008地下水封石洞油库设计规范》中规定的测量误差不应大于0.5%的要求;对于存在不连续区域的图形,矩形法更加方便和准确。矩形微元法计算速度快,避免了三角形法用于复杂区域可能出现的面积重复计算问题,提高了计算准确性,具有更好的适用性。
基金Supported by the National Natural Science Foundation of China(No.51105273)
文摘In this paper, a flexible high-precision calibration method suitable for industrial field was proposed. The complexity of the coordinate transformation was simplified by choosing the camera coordinate system as the unified reference coordinate system. A flexible planar calibration pattern was introduced to the calibration process, which can be arbitrarily placed and from which the known feature points can be extracted to construct other unknown feature points. With the known intrinsic parameters, the laser projector plane equation was fitted by the multi-noncollinear points, which were acquired through the principle of triangulation and the projective invariance of cross ratio. With this method, the strict alignment and multiple times of coordinate transformation can be avoided. Experimental results showed that the arithmetic mean of the root mean square(RMS) error of distance was 0.000 7 mm.
