Applications and challenges for MMW and THz sensors

Sanders-Reed, John N.

doi:10.1117/12.2179490

Cited by 2 publications

(2 citation statements)

References 18 publications

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“…The indicated limits of the frequency range are conditional, and many researchers use this term for electromagnetic radiation ranging from tens of gigahertz to 10 terahherts [1][2][3][4]. In addition, since terahertz radiation is located on the boundary between infrared radiation and millimeter waves, in many reviews and technical applications they are treated together [5][6][7][8][9][10][11]. The term "subterahertz radiation" is also used, if it is necessary to emphasize that we are talking about electromagnetic waves with a frequency of less than one terahertz.…”

Section: Introduction Terahertzmentioning

confidence: 99%

Semantic Fusion and Joint Analysis of Terahertz and 3d Video Images by the Means of Object-Oriented Logic Programming

Morozov¹,

Sushkova²,

Polupanov³

et al. 2018

RENSIT

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The aim of the work is to create methods and software tools for the terahertz range intelligent video surveillance, that is, for automatic analysis of video images in the terahertz frequency range. Terahertz video surveillance provides unique prospects in the area of public safety; in particular, it allows you to remotely identify weapons and dangerous items hidden under clothing on the human body. However, such characteristics of terahertz video, as low resolution, low contrast, and low signal-to-noise ratio, lead to the need to develop new methods and approaches to automatic video analysis. To understand the terahertz video image, the operator of the industrial video surveillance system usually compares it with images in other frequency ranges (visible or infrared). The comparison of these images of different types helps the operator to interpret the colored and/ or one-color spots in the terahertz image in a proper way. In terms of automatic video analysis, this means that the context of the observed events and objects is taken into account, or in other words, a semantic fusion is implemented of the terahertz range video image with video images of other frequency ranges, e.g., near-infrared, visible, etc. The authors consider the semantic fusion of the video images as a critical component of the prospective terahertz intelligent video surveillance technology. A new method of the terahertz video surveillance based on the fusion of the terahertz video with 3D video is proposed. The means of the object-oriented logic programming developed for the semantic fusion of the terahertz and 3D video images are described. The developed method provides a real-time fusion of the terahertz video acquired using the THERZ-7A (Astrohn Technology Ltd) subterahertz scanning device (0.23-0.27 THz) and 3D video data acquired using the Kinect 2 (Microsoft Inc) time-of-flight sensor. The method and software tools for the semantic fusion of the terahertz and 3D video images are developed.

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Section: Introduction Terahertzmentioning

confidence: 99%

Semantic Fusion and Joint Analysis of Terahertz and 3d Video Images by the Means of Object-Oriented Logic Programming

Morozov¹,

Sushkova²,

Polupanov³

et al. 2018

RENSIT

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“…Sensor methodologies are being explored to achieve a broader range of applications: remote sensing, arrays of indicators (artificial nose/tongue), and, more recently, multivariable sensor approaches [ 5 , 6 , 7 , 8 , 9 , 10 , 11 ]. Potyrailo [10] provides a comprehensive review of several sensor technologies and compares several sensing approaches.…”

Section: Introductionmentioning

confidence: 99%

Reflectance-based detection for long term environmental monitoring

Johnson

Malanoski

Erickson

et al. 2017

Heliyon

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Here, the potential of colorimetric sensors utilizing porphyrin indicators for long term environmental monitoring is demonstrated. Prototype devices based on commercial color sensing chips (six per device) were combined with in-house developed algorithms for data analysis. The devices are intended to provide real-time sensing of threats. An initial outdoor data set was collected using prototype devices with occasional spiked exposure to targets. This data was supported by similar data collected in a controlled indoor environment. Weaknesses in the noted performance of the devices during these experiments were addressed through altering device parameters, algorithm parameters, and array element composition. Additional outdoor data sets totaling 1,616 h and indoor data sets totaling 728 h were collected in support of assessing these changes to the system configuration. The optimized system provided receiver operating characteristics (ROC) of specificity 0.97 and sensitivity 1.0.

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Applications and challenges for MMW and THz sensors

Cited by 2 publications

References 18 publications

Semantic Fusion and Joint Analysis of Terahertz and 3d Video Images by the Means of Object-Oriented Logic Programming

Semantic Fusion and Joint Analysis of Terahertz and 3d Video Images by the Means of Object-Oriented Logic Programming

Reflectance-based detection for long term environmental monitoring

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