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Person detection in LWIR imagery using image retrieval

机译:使用图像检索的LWIR图像中的人检测

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This paper addresses the detection and localization of persons in LWIR imagery which is useful especially in visual surveillance tasks such as intruder detection in military camps or for gaining situational awareness. A robust image retrieval function is used after a previous hot spot detection and localization step in LWIR using a suitable, extensive image data base that covers a variety of different shapes and appearances of persons in LWIR. The basic idea behind this approach is, in contrast to the visual optical band (VIS), that persons in thermal infrared exhibit somehow similar, weakly individualized signatures which can be matched to a sufficient degree to images in the data base and, thus, can be distinguished from background structures and other objects. Dedicated pre and post processing routines optimize the results and compensate for a possibly occuring lack of image features needed by the image retrieval function. The achieved results document the practical benefit and the robustness of the presented aproach.
机译:本文介绍了LWIR图像中人员的检测和定位,这在视觉监视任务(例如在军事营地中进行入侵者检测或获得态势感知)方面特别有用。在之前的LWIR热点检测和定位步骤之后,使用适合的,广泛的图像数据库来使用强大的图像检索功能,该数据库覆盖LWIR中人员的各种不同形状和外观。与可见光波段(VIS)相比,此方法背后的基本思想是,热红外波段的人表现出某种相似的,微弱的个性化签名,这些签名可以与数据库中的图像充分匹配,因此可以与背景结构和其他对象区分开来。专用的前后处理程序可优化结果,并补偿可能出现的图像检索功能所需的图像特征不足。取得的成果证明了所提出方法的实际好处和稳健性。

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