| 被动式人体太赫兹图像中的目标辅助识别 |
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| 引用本文： | 赵然,赵源萌,张存林. 被动式人体太赫兹图像中的目标辅助识别[J]. 强激光与粒子束, 2014, 26(7): 073102. DOI: 10.11884/HPLPB201426.073102 |
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| 作者姓名： | 赵然 赵源萌 张存林 |
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| 作者单位： | 1.太赫兹光电子学教育部重点实验室首都师范大学, 北京市太赫兹波谱与成像重点实验室, 首都师范大学 物理系, 北京 1 00048 |
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| 基金项目： | 国家自然科学基金项目(11004140); 北京市教育委员会科技面上项目(11224010011); 北京市教育委员会市属高校创新能力提升计划项目(TJSHG201310028012); 光电成像技术与系统教育部重点实验室科研基地科技支撑计划项目(2012OEIOF04) |
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| 摘 要： | 提出一种被动式人体太赫兹安检仪的图像目标标注方法,用于辅助识别被安检人员隐藏携带的违禁物品。分析了探测器中心频率为0.1THz的被动式太赫兹人体安检仪图像特点,根据其特点进行图像增强、分割、轮廓提取等处理,进而实现图像中的目标检测,将其目标位置映射在同场景同时间采集的可见光图像上。实验结果表明,该方法可以有效地提取并标示可疑目标,帮助快速发现衣物下的隐匿物品,提高太赫兹安检仪的实用性。
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| 关 键 词： | 图像处理 图像增强 被动式太赫兹成像 轮廓提取 目标检测 |
| 收稿时间： | 2013-12-26 |
Target aided identification in passive human THz-image |
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| Affiliation: | 1.Key Laboratory of Terahertz OptoelectronicsCapital Normal University,Ministry of Education,Beijing Key Laboratory for Terahertz Spectroscopy and Imaging,Department of Physics,Capital Normal University,Beijing 100048,China |
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| Abstract: | The THz image enhancement, segmentation and contour extraction algorithms are studied to achieve effective target image detection. Firstly, the terahertz images are enhanced and their grayscales are stretched. Then we apply global threshold segmentation to extracting the target, and finally the targets are marked on the visible image. The experimental results show that the algorithm proposed in this paper can extract and mark targets effectively, so that people can find suspicious objects under clothing more quickly. The algorithm can improve the usefulness of the terahertz security apparatus we have developed. |
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| Keywords: | image processing image enhancement passive terahertz imaging contour extraction target detection |
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