Meaningful performance evaluation conditions for fire service thermal imaging cameras

Amon, Francine; Hamins, Anthony P.; Bryner, Nelson P.; Rowe, Justin

doi:10.1016/j.firesaf.2007.12.006

Cited by 30 publications

(15 citation statements)

References 8 publications

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“…TI is widely used in surveillance applications and was originally designed for US military use in night vision. However, with the advancement in computer analytical tools with digitalised high-resolution imaging, it has found application in various other fields including medicine, material science and fire safety (Amon et al 2008). In the medical sciences, thermal imaging has been shown to be a useful method for analysing patterns of temperature change, which can help locate areas of maximum heat production (McCullagh et al 2000).…”

Section: Thermal Imaging (Ti) As a Process Analytical Technique In Thmentioning

confidence: 99%

Measurement techniques and application of electrical properties for nondestructive quality evaluation of foods—a review

et al. 2011

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Non-destructive systems are recent trends for quality evaluation of fruits and vegetables. Information on post-harvest variations in electrical properties is needed to develop new instruments for this purpose. Electrical properties are finding increasing application in agriculture and food processing industries. Knowledge of dielectric properties of foods as a function of moisture content and temperature is essential in the design and control of drying systems. As simple, rapid and non-destructive measuring techniques, dielectric spectroscopy provides information about the dielectric response of materials to electromagnetic field. Electrical properties of agricultural materials have been of interest for many years. The interest in dielectric properties of materials has historically been associated with the design of electrical equipment. This review paper covers theoretical aspects of different electrical properties, their measurement techniques, applications of dielectric properties in agriculture/food processing sector and potential applications of thermal imaging (TI) for quality and safety assessment in food processing. The values of dielectric properties of a number of products including food grains, fruits and vegetables, and meat and meat products are presented in table form. This comprehensive coverage will be useful for academic, scientific and industrial community in treating and applying the facts in developing/testing new processes and products based on electromagnetic energy application.Keywords Electrical properties . Non-destructive . Measuring techniques . Dielectric constant . Loss factor . Thermal imaging technique . Food quality evaluationThe material investigation and moisture measurement using electromagnetic waves in wide spectrum serve for quality control and improvement in many branches like industry, forest and wood-working industry, civil engineering, agriculture, commerce and also foods e.g. for quality evaluation of meat, fruits, coffee etc (Hlavacova 2003; Venkatesh and Raghavan 2004). Non-destructive evaluation of quality based on constituents of fruits and vegetables has been successfully used (Chen et al. 1999;Jha et al. 2001;Kawano 1998). Electrical characteristics of agricultural materials have been of interest for many years (Nelson 2006) and are utilized in many areas of human activities. Techniques for non-destructive determination of quality and related characteristics of agricultural products are helpful to producers, handlers and processors . Permittivity and moisture can be closely correlated when water content is high. Knowledge of dielectric properties in partially frozen material is critical in determining the rates and uniformity of heating in microwave thawing. Electrical properties are important in processing foods with pulsed electric fields, ohmic heating, induction heating, radio frequency, and microwave heating. These properties are also useful in the detection of processing conditions or the quality of foods (Barbosa-Canovas et al. 2006). Considering ...

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Section: Thermal Imaging (Ti) As a Process Analytical Technique In Thmentioning

confidence: 99%

Measurement techniques and application of electrical properties for nondestructive quality evaluation of foods—a review

et al. 2011

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“…The thermal imaging camera features fast and visible diagnosis outputs. However, thanks to expensive infrared sensors and optical lenses, the thermal imaging camera's production cost is relatively high and the camera can International Journal of Distributed Sensor Networks be damaged by the temperature of the object being measured [17].…”

Section: Related Workmentioning

confidence: 99%

A Multiple Feature-Based Image-Switching Strategy in Visual Sensor Networks

Jang

Kim

2015

International Journal of Distributed Sensor Networks

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Generally, one fixed camera is used to take still or dynamic images and extract proper information from the captured images. However, the process of analyzing images through the use of one camera is very sensitive to neighboring environmental factors, such as illumination, background, and noise; thus, it is hard to guarantee precision. To extract proper information from images more precisely in visual sensor networks, this paper proposes an image-switching strategy where, among different types of installed cameras, the one camera best suited to neighboring circumstances is chosen. The proposed strategy is to first receive initial images as input data and then extract multiple features representing neighboring circumstances from the input images. Subsequently, it is to define the neighboring circumstances metric, which is the weighted sum of the extracted features, and to dynamically switch cameras to obtain images in accordance with the neighboring circumstances. The results of the experiment show that the proposed dynamic switching strategy reliably chooses, from among different cameras, the one camera that is best suited to the neighboring circumstances.

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“…At that time, a rapid technological development of thermal cameras occurred. Cameras produced today are more modern, smaller, lighter, better adapted to firefighter working conditions and cheaper [1,5].…”

Section: Fig 1 a Firefighter With A Camera Talisman Bought In 1997 mentioning

confidence: 99%

Functioning of Thermal Camera In Actions of Polish State Fire Service

Szajewska¹

2015

Proceedings of the 2015 Asia International Conference on Quantitative InfraRed Thermography

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The paper presents pictures and thermograms from real actions, where thermal cameras were used by firefighters in Poland. They show how thermal camera helps in the assessment of the fire situation, contributes to the safety of the rescuers, facilitates the work of rescuers, shortens the duration of firefighting operations, contributes to the reduction of the use of extinguishing agents lowering the action costs and losses caused by flooding. A thermal camera helps to save the lives of people surprised by fire, as it provides visibility in smoke-filled areas, where firefighters can quickly find victims and help them.

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Meaningful performance evaluation conditions for fire service thermal imaging cameras

Cited by 30 publications

References 8 publications

Measurement techniques and application of electrical properties for nondestructive quality evaluation of foods—a review

Measurement techniques and application of electrical properties for nondestructive quality evaluation of foods—a review

A Multiple Feature-Based Image-Switching Strategy in Visual Sensor Networks

Functioning of Thermal Camera In Actions of Polish State Fire Service

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