High speed photodetectors operating at a telecommunication band (from 1260 to 1625 nm) have been well studied with the development of an optical fiber communication system. Recent innovations photonic systems raised new requirements on bandwidth cutoff wavelengths from extended short wavelength infrared (eSWIR) long (LWIR). However, frequency response performance in these longer bands is less s...

This paper provides an overview of the microbolometer technology developed in Canada, including pixel engineering, readout electronics, and detector packaging. Design considerations are also presented for a two band LWIR radiometer intended for microsatellite-based demonstration of microbolometer technology.

Longwave Infrared (LWIR) radiation comprising atmospheric and surface emissions provides information for a number of applications including atmospheric profiling, surface temperature and emissivity estimation, and cloud depiction and characterization. The LWIR spectrum also contains absorption lines for numerous molecular species which can be utilized in quantifying species amounts. Modeling th...

Only a few studies have been reported regarding human ear recognition in long-wave infrared (LWIR) band. Thus, we have created ear database based on LWIR. We have called that the database is “LWIR MIDAS” consisting of 2430 records of 81 subjects. Thermal band provides seamless operation both night and day, robust against spoofing with understanding ear liveness and invariant to illumination con...

Recently, in-bed human pose estimation has attracted the interest of researchers due to its relevance a wide range healthcare applications. Compared general problem estimation, several inherent challenges, most prominent being frequent and severe occlusions caused by bedding. In this paper we explore effective use images from multiple non-visual privacy-preserving modalities such as depth, long...

We constructed a palm-sized LWIR hyperspectral camera with microbolometer and successfully measured the absorbance of black microplastics.

A fully functional, prototype night vision camera system is described which produces true-color imagery, using a visible/near-infrared (VNIR) color EMCCD camera, fused with the output from a thermal long-wave infrared (LWIR) microbolometer camera. The fusion is performed in a manner that displays the complimentary information from both sources without destroying the true-color information. The ...

High performance distributed Bragg reflectors (DBRs) are key elements to achieving high finesse MEMS-based Fabry–Pérot interferometers (FPIs). Suitable mechanical parameters combined with contrast between the refractive indices of constituent optical materials main requirements. In this paper, Germanium (Ge) and barium fluoride (BaF2) thin-films have been investigated for mid-wave infrared (MWI...

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...