Quality of 3D digitised points obtained with non-contact optical sensor
Quality of 3D digitised points obtained with non-contact optical sensor
复制标题
DOI：
10.1016/s0007-8506(07)61556-x
复制
发表时间：
2002-01-01
影响因子：
4.1
通讯作者：
Lartigue, C
中科院分区：
文献类型：
--
作者：
Contri, A;Bourdet, P;Lartigue, C
如今，数字化系统在相对较短的时间内提供代表物体表面的大量数据点。这些数字化数据通常被逆向工程、检测或自由形式复制等应用所利用。然而，点开发的质量广泛地与点质量相关，即与数字化过程的质量相关。为了回答这个问题的一部分，我们提出了一种方法来本地评估的位置在整个测量空间的三维点的不确定性。这种不确定性集成了由于数字化噪声和光学现象而产生的误差。特别地，在校准方法中使用噪声数据意味着从其2D CCD位置获得的所得3D点上的分散。
Today digitising systems deliver large sets of data points which are representative of an object surface, in a relatively short time. These digitised data are generally exploited by applications such as reverse engineering, inspection or free form copying. However, the quality of the point exploitation is widely linked to the point quality, i.e. to the quality of the digitising process. To answer a part of this problem, we propose a method to locally evaluate the uncertainty of location of a 3D point in the whole measuring space. This uncertainty integrates errors due to digitising noise and optical phenomena. In particular, the use of noisy data in the calibration method implies a dispersion on the resulting 3D point as obtained from its 2D CCD location.