Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Real-time concealed object detection and recognition in passive imaging at 250 GHz

Not Accessible

Your library or personal account may give you access

Abstract

The presented study concerns detection and recognition of hidden objects covered with various types of clothing by using passive imagers operating in a terahertz (THz) range at 1.2 mm (250 GHz). The aim of this study is to propose a detection and classification algorithm operating robustly at a high processing speed. The paper briefly describes properties of the THz spectrum, theoretical limitations, performance of the imager, and physical properties of fabrics in a wide range of frequencies. Two methods have been presented, trained, and tested using a dataset with various configurations in sessions each lasting 30 min. During experiments, different clothes and hidden objects have been combined. The paper presents a comparison of robust detection and recognition methods for concealed objects using a multiframe single-shot detector and region-based fully convolutional networks. The comparison of the original results of various experiments is presented.

© 2019 Optical Society of America

Full Article  |  PDF Article
More Like This
Real-time concealed-object detection and recognition with passive millimeter wave imaging

Seokwon Yeom, Dong-Su Lee, YuShin Jang, Mun-Kyo Lee, and Sang-Won Jung
Opt. Express 20(9) 9371-9381 (2012)

Passive imaging of concealed objects in terahertz and long-wavelength infrared

Marcin Kowalski, Mariusz Kastek, Michal Walczakowski, Norbert Palka, and Mieczyslaw Szustakowski
Appl. Opt. 54(13) 3826-3833 (2015)

Passive imaging at 250 GHz for detection of face presentation attacks

Marcin Kowalski
Opt. Express 29(2) 1956-1976 (2021)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (10)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (3)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (7)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved