The UK police service is one of the biggest users of ANPR technology in the world and over a number of years Police Forces have reported variances in ANPR performance based upon the retro-reflectivity properties of UK number plates. Laboratory and field-based research has been conducted with the aim of better understanding the effect of number plate component differences upon imaging systems us...

This paper describes the use of a novel method of feature extraction for visual sensor processing. An application to crack detection by a sewer maintenance robot equipped with an infra-red camera is described. A spacefrequency distribution ’signature’ is generated via a three step process involving; space-frequency decomposition, density function estimation, and parameter extraction. These step...

We suggest that Jovian planets will survive the late stages of stellar evolution, and that white dwarfs will retain planetary systems in wide orbits (∼ 5 AU). Utilising evolutionary models for Jovian planets, we show that infra-red imaging with 8m class telescopes of suitable nearby white dwarfs should allow us to resolve and detect companions ∼ 3MJUP. Detection of massive planetary companions ...

In this paper, a study of the power and impulse frequency influences on the microfabrication fluidic structures by infra-red laser ablation in low-temperature co-fired ceramics (LTCC) substrates is presented.LTCC technology , which has been commonly used for electronic applications, is presented as a useful alternative to construct continuous flow analytical microsystems. A μ-FFE device, with e...

The thermoelastic stress analysis for linear thermoelastic bodies is developed as a mathematical support to the infra-red radiometric method (SPATE) applied to structures under cyclic loading conditions.

In this paper the problem of detecting objects in the presence of clutter is studied. The images considered are obtained from both visual and infra-red sensors. A feature-based segmentation approach to the object detection problem is pursued, where the features used are computed over multiple spatial ori-entations, and frequencies. The method proceeds as follows: A given image is passed through...

This paper presents the development of a passive infra-red sensor tower platform along with a classification algorithm to distinguish between human intrusion, animal intrusion and clutter arising from wind-blown vegetative movement in an outdoor environment. The research was aimed at exploring the potential use of wireless sensor networks as an early-warning system to help mitigate human-wildli...

The prompt optical flash recently detected accompanying GRB990123 suggests that, for at least some GRBs, γ-ray emission is accompanied by prompt optical-UV emission with luminosity L(1 − 7.5 eV) ≈ 1 × 10 49 (∆Ω/4π)erg/s, where ∆Ω is the solid angle into which γ-ray and optical-UV emission is beamed. Such an optical-UV flash can destroy dust in the beam by sublimation out to an appreciable dista...