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Precision reconstruction based tracking for autonomous synthetic battlefield displays acquired from unmanned aerial vehicle video streams.

机译:基于精度重构的跟踪,用于从无人机视频流中获取的自主合成战场显示。

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摘要

The research currently conducted operates under the tenet of providing an increased level of situational awareness (SA) for soldiers on and off the battlefield using a combination of images and spatial information. More specifically in image and spatial data fusion, there exists a need to create a methodology to achieve near autonomous spatial and temporal tracking of entities, providing position and orientation (pose) data for use in tactical displays. Although image reconstruction has not been employed in the application of force tracking, this research is motivated by the positive results reconstruction has achieved in real-time tracking and depth estimation. Thus this study concentrates on the development of a precision force tracking framework by employing recursive structure from motion based algorithms to perform image reconstruction.;By capturing video streams mimicking those obtained from unmanned aerial vehicles (UAVs), the algorithm was able to provide refined three-dimensional (3-D) pose estimates of an observed entity. To calculate the error, the reconstructed points were then compared to the 3-D ground truth data. Extensive analysis illustrated the algorithm exhibited good performance when the scene contained feature points with little noise and when the relative motion was not exceedingly fast although quality results were also achieved when reconstructing datasets with higher levels of motion. More importantly, the system displayed good performance in accuracy, processing and uploading time, and reducing bandwidth consumption.;Lastly the approximated world coordinates addressed two integral topics. The first area provided answers to the questions when (temporal data) and where (spatial data), giving rise to the location of blue (friendly), red (enemy), and unknown forces at a specified time. The second topic tackled the issue of fusing data obtained from UAVs by decreasing the amount of bandwidth consumed when uploading vital information. This solution helped alleviate challenging demands placed on SA and UAV image processing when utilizing networks in a bandwidth-restricted environment. When integrated with computer vision as well as synthetic models emulating that of a battlefield, the findings of the precision force tracking framework will assist in the overall provision of tactical information and enhanced situational awareness to warfighters during combat.
机译:目前进行的研究的宗旨是结合图像和空间信息为战场内外的士兵提供更高水平的态势感知(SA)。更具体地,在图像和空间数据融合中,需要创建一种方法以实现对实体的近自主的空间和时间跟踪,从而提供用于战术显示的位置和方向(姿势)数据。尽管在力跟踪的应用中尚未采用图像重建,但是本研究的动机是重建在实时跟踪和深度估计中取得了积极的成果。因此,本研究着重于通过使用基于运动的算法的递归结构来执行图像重建的精确力跟踪框架的开发。通过捕获模仿无人飞行器(UAV)的视频流,该算法能够提供改进的三个观察实体的三维(3-D)姿态估计。为了计算误差,然后将重构点与3-D地面真实数据进行比较。大量分析表明,当场景中包含的特征点具有很少的噪声且相对运动不是很快时,尽管在重建具有较高运动水平的数据集时也获得了质量结果,但是该算法表现出良好的性能。更重要的是,该系统在准确性,处理和上载时间以及减少带宽消耗方面都表现出良好的性能。最后,近似世界坐标解决了两个不可或缺的主题。第一个区域提供了对问题的回答(时间数据)和位置(空间数据),从而在指定的时间出现了蓝色(友善),红色(敌人)和未知部队。第二个主题通过减少上传重要信息时消耗的带宽量解决了融合从无人机获得的数据的问题。当在带宽受限的环境中使用网络时,该解决方案有助于缓解对SA和UAV图像处理提出的挑战性要求。当与计算机视觉以及模拟战场的综合模型集成在一起时,精确力跟踪框架的发现将有助于向战斗人员提供总体战术信息,并在战斗中增强态势感知能力。

著录项

  • 作者

    Jackson, Nykia Lynell.;

  • 作者单位

    Morgan State University.;

  • 授予单位 Morgan State University.;
  • 学科 Engineering Electronics and Electrical.;Military Studies.
  • 学位 D.Eng.
  • 年度 2008
  • 页码 212 p.
  • 总页数 212
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 无线电电子学、电信技术;
  • 关键词

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