Face recognition systems typically have a rather short operating distance with standoff (distance between the camera and the subject) limited to 1∼2 meters. When these systems are used to capture face images at a larger distance (5∼10 m), the resulting images contain only a small number of pixels on the face region, resulting in a degradation in face recognition performance. To address this pro...

In previous work an automatic detection system for locating buried explosive hazards in forward-looking longwave infrared (FL-LWIR) and forward-looking ground penetrating radar (FL-GPR) data was presented. This system consists of an ensemble of trainable size-contrast filters prescreener coupled with a secondary classification step which extracts cell-structured image space features, such as lo...

In this study, the effects of process parameters on the geometrical characteristics and the topography were investigated in milling of SS304 material using Abrasive Water Jet machining technique. In addition, optimal control of the input variables for achieving the quality of the channel was determined by using Grey relational analysis. The input process parameters include traverse speed, abras...

Biological hazardous substances such as certain fungi and bacteria represent a high risk for the broad public if fallen into wrong hands. Incidents based on bio-agents are commonly considered to have unpredictable and complex consequences for first responders and people. The impact of such an event can be minimized by an early and fast detection of hazards. The presented approach is based on op...

A fully integrated UV Townsend Effect Plasma Spectroscopy (TEPS)-Raman system has been constructed for use of standoff detection of energetic materials. A single 266nm Q-Switched Nd:YAG Laser was used for Raman excitation and TEPS plasma ignition. A nearly simultaneous 10.6um CO2 laser is employed for the signal enhancement in the TEPS measurements. Chemometric techniques are presented for anal...

Non-contact sensing is very desirable in many measurement situations. Non-contact sensors are free of probe wear or bounce, collect data at much higher rates than contact devices and do not influence the object being measured. Compared to capacitive and inductive devices, laser triangulation sensors have much larger standoff (distance from the sensor to the part). Compared to ultrasonic sensors...

Writh the ctid of the Ĉ ôld War, security issues have rctnaiticd crucial for the survival and devL-lopmcnt of tbe Asia-Pacific region. Some structural changes in tbe sccurit)environment, sucb as globalization, miiitar\build-up, ;ind the rise of (^hitia, are threatening regional peace and stabilit)-. Moreover, crises such as global tctTorism, the North Korean nuclear standoff, and the SARS epide...

We report improvements in the scanning speed and standoff range of an ultra-wide bandwidth terahertz (THz) imaging radar for person-borne concealed object detection. Fast beam scanning of the single-transceiver radar is accomplished by rapidly deflecting a flat, light-weight subreflector in a confocal Gregorian optical geometry. With RF back-end improvements also implemented, the radar imaging ...

The U.S. Department of Homeland Security’s Standoff Technology Integration and Demonstration Program is designed to accelerate the development and integration of technologies, concepts of operations, and training to defeat explosives attacks at large public events and mass transit facilities. The program will address threats posed by suicide bombers, vehicle-borne improvised explosive devices, ...

[1] The long-term statistical behavior of the large-scale structure of Saturn’s magnetosphere has been investigated. Established statistical techniques for Jupiter have been applied to the kronian system, employing Cassini magnetometer data and a new empirical shape model of the magnetopause based on these data. The resulting distribution of standoff distance RMP for Saturn, covering a time int...