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Collaborative Research: Ultraviolet(UV)-MultiSpectral-Polarization 3D Imaging of the Underwater World

合作研究：水下世界的紫外线 (UV) 多光谱偏振 3D 成像

基本信息

批准号：
1724615
负责人：
Viktor Gruev
金额：
$ 40.43万
依托单位：
University of Illinois at Urbana-Champaign
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2016
资助国家：
美国
起止时间：
2016-09-15 至 2019-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1724615&HistoricalAwards=false
关键词：
Collaborative Research Ultraviolet UV MultiSpectral

项目摘要

Fine-scale mapping of the underwater world is currently elusive because of a fundamental property of aquatic environments--they are in constant motion. Three-Dimensional mapping of the underwater world in an ecologically relevant way requires mapping not only the physical limits of a specific arena but also the biology within it. Here, the researchers propose to revolutionize the way scientists build near-scale (5-10m) underwater maps by the construction of a UV-Multispectral-Polarization imager with complete multilevel imaging features enabling 3D mapping and full optical characterization of underwater environments. The proposed 3D imager will overcome the challenge of a moving and scattering medium; overcome the problems that cripple conventional scanning devices (e.g. co-registration); while simultaneously filling in the 3D map with biologically meaningful information with images and complete characterization of the light field. With such a device, one will have the capability to map the physical footprint of the underwater world, but also extract species identification from optical characteristics, movement characteristics of organisms within it, health/condition status of biological organisms (e.g. coral reefs, oil spills, plastic contaminants), and comprehensive optical characterization. In addition to providing fine scale mapping of underwater worlds that will serve both biological and conservation missions, the researchers will also use this technology to engage STEM programs in both the Austin and St. Louis areas.This is a Collaborative OTIC award to develop a state-of-the-art 3D imaging device whose purpose is to transform the way researchers map underwater environments and biologically characterize the features within it. The principle investigators propose to develop a high spatial and temporal resolution multispectral polarimeter capable of measuring polarization information in RGB bandwidths combined with three separate and distinct narrow spectral bandwidth channels, one of which being in the UV spectrum. This will produce 12 distinct optical channels that are inherently co-registered, with polarization detection allowing for dehazing capabilities to greatly increase the effectiveness of visual simultaneous localization and mapping algorithms (VSLAM) for obtaining 3D map reconstruction. The co-registered channels will overlay maps with optical information for identifying and measuring benthic characteristics. This next generation underwater mapping device will provide scientists with simultaneous information on (i) physical dimensional space (3D depth), (ii) surface characteristics that identify benthos and organisms within the environment (imaging), (iii) optical characterization of the water column and benthos, as well as (iv) allow for fine-scale tracking of organisms within these underwater environments. This device will enable broad ranges of research questions from oceanographers and marine scientists interested in monitoring coral reefs, animal behaviorists studying 3D camouflage and communication properties, to conservation scientists interested in monitoring environmental degradation (oil and plastic contaminants). This collaborative effort will (a) produce a polarization imaging sensor that captures multispectral polarization information in real-time (~20fps), with low power dissipation and with high spatial resolution, (b) provide dynamic multispectral information on underwater features that were previously unattainable due to scanning technologies with low temporal resolution (~1min), (c) develop software to map and track underwater environments modifying currently developed open source VSLAM software, and (d) test emerging biological hypotheses on camouflage, communication and coral reef monitoring.

由于水生环境的一个基本特性-它们处于不断的运动中，目前还难以绘制水下世界的精细地图。以生态相关的方式绘制水下世界的三维地图不仅需要绘制特定竞技场的物理限制，还需要绘制其中的生物学。研究人员建议通过建造一个紫外多光谱系统，偏振成像仪具有完整的多级成像功能，可实现水下环境的3D映射和完整的光学表征。所提出的3D成像仪将克服移动和散射介质的挑战;克服削弱传统扫描设备的问题（例如，配准）;同时用具有生物意义的信息填充3D图，其中具有图像和光场的完整表征。有了这样的设备，人们将有能力绘制水下世界的物理足迹，而且还可以从光学特征、生物体内生物的运动特征、生物有机体的健康/状况状态（例如珊瑚礁、石油泄漏、塑料污染物）以及全面的光学特性中提取物种识别。除了为生物和保护任务提供水下世界的精细地图外，研究人员还将利用这项技术参与奥斯汀和圣路易斯地区的STEM项目。这是一项合作OTIC奖，旨在开发一种最先进的3D成像设备，其目的是改变研究人员绘制水下环境和生物特征的方式。原理研究者提出开发一种高空间和时间分辨率的多光谱偏振计，其能够测量RGB带宽中的偏振信息，所述RGB带宽与三个单独且不同的窄光谱带宽通道相结合，其中一个窄光谱带宽通道在UV光谱中。这将产生12个不同的光学通道，这些通道固有地共同配准，偏振检测允许去雾能力，以大大提高视觉同时定位和映射算法（VSLAM）用于获得3D地图重建的有效性。共同登记的水道将在地图上叠加光学信息，以确定和测量海底特征。这一下一代水下测绘设备将为科学家提供以下方面的同步信息：㈠物理维度空间（三维深度）; ㈡可识别环境中底栖生物和生物的表面特征（成像）; ㈢水柱和底栖生物的光学特征;以及㈣可对这些水下环境中的生物进行精细跟踪。该设备将使海洋学家和对监测珊瑚礁感兴趣的海洋科学家，研究3D伪装和通信特性的动物行为学家，以及对监测环境退化（石油和塑料污染物）感兴趣的保护科学家的广泛研究问题成为可能。这项合作努力将（a）生产一种偏振成像传感器，该传感器以低功耗和高空间分辨率实时（~ 20 fps）捕获多光谱偏振信息，（B）提供关于水下特征的动态多光谱信息，这些信息以前由于扫描技术而无法实现，具有低时间分辨率（~ 1 min），（c）开发软件，以测绘和跟踪水下环境，修改目前开发的开放源码VSLAM软件;（d）测试新出现的关于伪装、通信和珊瑚礁监测的生物假设。