Low cost multimedia sensor networks for obtaining lighting maps

In many applications, video streams, images, audio streams and scalar data are commonly used. In these fields, one of the most important magnitudes to be collected and controlled is the light intensity in different spots. So, it is extremely important to be able to deploy a network of light sensors...

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Veröffentlicht in:Multimedia tools and applications 2018-06, Vol.77 (12), p.14499-14526
Hauptverfasser: Luque, Amalia, Peralta, M. Estela, Lama, Juan Ramón, Aguayo, Francisco
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container_issue 12
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container_title Multimedia tools and applications
container_volume 77
creator Luque, Amalia
Peralta, M. Estela
Lama, Juan Ramón
Aguayo, Francisco
description In many applications, video streams, images, audio streams and scalar data are commonly used. In these fields, one of the most important magnitudes to be collected and controlled is the light intensity in different spots. So, it is extremely important to be able to deploy a network of light sensors which are usually integrated in a more general Wireless Multimedia Sensor Network (WMSN). Light control systems have increasing applications in many places like streets, roads, buildings, theaters, etc. In these situations having a dense grid of sensing spots significantly enhances measuring precision and control performance. When a great number of measuring spots are required, the cost of the sensor becomes a very important concern. In this paper the use of very low cost light sensors is proposed and it is shown how to overcome its limited performance by directionally correcting its results. A correction factor is derived for several lighting conditions. The proposed method is firstly applied to measure light in a single spot. Additionally a prototype of a sensor network is employed to draw the lighting map of a surface. Finally the sensor grid is employed to estimate the position and power of a set of light sources in a certain region of interest (street, building, …). These three applications have shown that using low cost sensors instead of luxmeters is a feasible approach to estimate illuminance levels in a room and to derive light sources maps. The obtained error measuring spots illuminance or estimating lamp emittances are quite acceptable in many practical applications.
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subjects Audio data
Computer Communication Networks
Computer Science
Data Structures and Information Theory
Error analysis
Illuminance
Light
Light sources
Lighting
Low cost
Luminous intensity
Multimedia
Multimedia Information Systems
Position sensing
Sensors
Special Purpose and Application-Based Systems
Spots
Streams
Video data
Wireless sensor networks
title Low cost multimedia sensor networks for obtaining lighting maps
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