A comparative analysis between active and passive techniques for underwater 3D reconstruction of close-range objects.
A comparative analysis between active and passive techniques for underwater 3D reconstruction of close-range objects.
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DOI：
10.3390/s130811007
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发表时间：
2013-08-20
期刊：
影响因子：
--
通讯作者：
Muzzupappa M
中科院分区：
文献类型：
--
作者：
Bianco G;Gallo A;Bruno F;Muzzupappa M
在某些应用领域，如水下考古学或海洋生物学，需要从无法从现场移走的物体上收集三维、近距离数据。特别地，3D成像技术被广泛用于水下环境中的近距离采集。在这项工作中，我们在水中比较了两种基于主动和被动方法的3D成像技术，分别和全场采集。比较是在能见度差的条件下进行的，在实验室中通过将不同数量的粘土悬浮在水箱中产生。为了进行公平的比较，两种技术都采用了立体声配置，使用相同的设置，工作距离，校准和对象。目前，所提出的设置是不适合真实的世界的应用，但它使我们能够进行初步分析的性能，这两种技术，并了解他们的能力，以获取3D点存在的浑浊。的性能进行了评估的精度和密度的采集的3D点。我们的研究结果可以作为一个参考，在其他3D技术和算法的分析进行进一步的比较。
In some application fields, such as underwater archaeology or marine biology, there is the need to collect three-dimensional, close-range data from objects that cannot be removed from their site. In particular, 3D imaging techniques are widely employed for close-range acquisitions in underwater environment. In this work we have compared in water two 3D imaging techniques based on active and passive approaches, respectively, and whole-field acquisition. The comparison is performed under poor visibility conditions, produced in the laboratory by suspending different quantities of clay in a water tank. For a fair comparison, a stereo configuration has been adopted for both the techniques, using the same setup, working distance, calibration, and objects. At the moment, the proposed setup is not suitable for real world applications, but it allowed us to conduct a preliminary analysis on the performances of the two techniques and to understand their capability to acquire 3D points in presence of turbidity. The performances have been evaluated in terms of accuracy and density of the acquired 3D points. Our results can be used as a reference for further comparisons in the analysis of other 3D techniques and algorithms.
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