DeepSurveyCam--A Deep Ocean Optical Mapping System.
DeepSurveyCam--A Deep Ocean Optical Mapping System.
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DOI：
10.3390/s16020164
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发表时间：
2016-01-28
期刊：
影响因子：
--
通讯作者：
Greinert J
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文献类型：
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作者：
Kwasnitschka T;Köser K;Sticklus J;Rothenbeck M;Weiß T;Wenzlaff E;Schoening T;Triebe L;Steinführer A;Devey C;Greinert J
水下摄影测量，特别是深海的系统目视测量，远不如陆地或空间的类似技术发达。主要的挑战是恶劣的条件和极高的压力，目标区域的可达性（集装箱和船舶部署强大的传感器，然后潜水数小时到海底），以及定位技术的局限性（没有GPS）。自然光的缺乏使深潜闪光装备无人机的能源预算考虑复杂化。折射效应影响几何成像的视场和焦点方面的考虑，而衰减和散射降低辐射图像质量和限制有效的能见度。作为对上述问题的改进，我们提出了一种基于AUV的光学系统，用于在水深达6000 m的大面积海底（平方公里）的自主视觉测绘。我们将其与现有系统进行比较，并讨论分辨率与映射区域等权衡，并显示最近部署的90，000平方米深海海底映射的结果。
Underwater photogrammetry and in particular systematic visual surveys of the deep sea are by far less developed than similar techniques on land or in space. The main challenges are the rough conditions with extremely high pressure, the accessibility of target areas (container and ship deployment of robust sensors, then diving for hours to the ocean floor), and the limitations of localization technologies (no GPS). The absence of natural light complicates energy budget considerations for deep diving flash-equipped drones. Refraction effects influence geometric image formation considerations with respect to field of view and focus, while attenuation and scattering degrade the radiometric image quality and limit the effective visibility. As an improvement on the stated issues, we present an AUV-based optical system intended for autonomous visual mapping of large areas of the seafloor (square kilometers) in up to 6000 m water depth. We compare it to existing systems and discuss tradeoffs such as resolution vs. mapped area and show results from a recent deployment with 90,000 mapped square meters of deep ocean floor.