Metric capabilities of low-cost digital cameras for close range surface measurement
Metric capabilities of low-cost digital cameras for close range surface measurement
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DOI：
10.1111/j.1477-9730.2005.00302.x
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发表时间：
2005-03-01
影响因子：
2.4
通讯作者：
Jack, A
中科院分区：
文献类型：
--
作者：
Chandler, JH;Fryer, JG;Jack, A
本文探讨了潜在的低成本数码相机近距离表面测量使用基于特征的图像匹配方法。这是通过提取数字高程模型（DEM）并比较三款低成本消费级数码相机（Sony DSC-P10、Olympus C3030、Nikon Coolpix 3100）和柯达DCS 460之间的精度来实现的。令人惊讶的是，测试显示，最高的精度是使用索尼DSC-P10，而不是柯达DCS 460，而其他两款相机肯定被证明适合大多数近距离表面测量任务。发现透镜建模提供了对最终精度的限制约束，其中由透镜建模中的残余缺陷引起的系统误差表面非常小。使用IMAGINE OrthoBASE Pro软件和独立的自校准光束法平差来处理这些数据。这些测试确定了IMAGINE OrthoBASE Pro版本8（.）自校准能力的不准确性6和Leica Geosystems LPS 8（.）7，这将在后续软件版本中得到纠正。这项研究表明，更便宜的消费级数码相机有潜力的常规表面测量提供透镜建模被认为是。主要作者正在维护一个基于网络的摄像机校准数据库，这可能有助于其他用户。
This paper examines the potential of low-cost digital cameras for close range surface measurement using feature-based image matching methods. This is achieved through extracting digital elevation models (DEMs) and comparing accuracies between three low-cost consumer-grade digital cameras (Sony DSC-P10, Olympus C3030, Nikon Coolpix 3100) and the proven Kodak DCS460. Surprisingly, the tests revealed that the highest accuracies were achieved using the Sony DSC-P10, not the Kodak DCS460, whilst the other two cameras certainly proved suitable for most close range surface measurement tasks. Lens modelling was found to provide a limiting constraint on final accuracies, with very small systematic error surfaces caused by residual imperfections in lens modelling. The IMAGINE OrthoBASE Pro software and an independent self-calibrating bundle adjustment were used to process these data. These tests identified an inaccuracy in the self-calibrating capability of IMAGINE OrthoBASE Pro version 8(.)6 and Leica Geosystems LPS 8(.)7, which will be rectified in subsequent software releases. The study has demonstrated that cheaper consumer-grade digital cameras have potential for routine surface measurement provided lens modelling is considered. The lead author is maintaining a web-based repository,for camera calibration data, which may assist other users.