Browsing by Subject "Fires"

Now showing 1 - 12 of 12

Open Access
3-Boyutlu orman yangını yayılımı sistemi
(IEEE, 2008) Köse, Kıvanç; Yılmaz, E.; Grammalidis, N.; Aktuğ, B.; Çetin, A. Enis; Aydın, İ.
In the last few years, due to the global warming and draught related to it, there is an increase in the number of forest fires. Forest fire detection is mainly done by people but there exists some automated systems in this field too. Besides the detection of the forest fires, effective fire extinhguising has an important role in fire fighting. If the spread of the fire can be predicted from the starting, early intervene can be achieved and fire can be extinguished swiftly. Using the Fire Propagation Simulator explained here it is aimed, to predict the fire development beforehand and to visulalize this predictions on a 3D-GIS environment. ©2008 IEEE.
Open Access
3D forest fire propagation simulation
(IEEE, 2008-05) Köse, Kıvanç; Grammalidis, N.; Yılmaz, E.; Çetin, A. Enis
The increase in the number of forest fires in the last few years dispatch governments to take precautions. Besides prevention, early intervention is also very important in fire fighting. If the firefighters know where the fire will be in some time, it would be easier for them to stop the fire. Therefore a big need for simulating the fire behavior exists. In this paper we are proposing a system which can simulate the propagation of fire in time. Also this system can visualize the propagation of fire in any 3D-GIS environment, that accepts KMZ as a file format. Besides, any user demanded data can be visualized on the map of the system. This gives the chance of fire planning to firefighters. The system can visualize its results on 3D screens in 3D. Therefore, a better understanding of the terrain can be obtained. ©2008 IEEE.
Open Access
Computer vision based forest fire detection
(IEEE, 2008) Töreyin, B. Uğur; Çetin, A. Enis
Lookout posts are commonly installed in the forests all around Turkey and the world. Most of these posts have electricity. Surveillance cameras can be placed on to these surveillance towers to detect possible forest fires. Currently, average fire detection time is 5 minutes in manned lookout towers. The aim ofthe proposed computer vision based method is to reduce the average fire detection rate. The detection method is based on the wavelet based analysis of the background images at various update rates.
Open Access
Fire detection and 3D fire propagation estimation for the protection of cultural heritage areas
(Copernicus GmbH, 2010) Dimitropoulos, K.; Köse, Kıvanç; Grammalidis, N.; Çetin, A. Enis
Beyond taking precautionary measures to avoid a forest fire, early warning and immediate response to a fire breakout are the only ways to avoid great losses and environmental and cultural heritage damages. To this end, this paper aims to present a computer vision based algorithm for wildfire detection and a 3D fire propagation estimation system. The main detection algorithm is composed of four sub-algorithms detecting (i) slow moving objects, (ii) smoke-coloured regions, (iii) rising regions, and (iv) shadow regions. After detecting a wildfire, the main focus should be the estimation of its propagation direction and speed. If the model of the vegetation and other important parameters like wind speed, slope, aspect of the ground surface, etc. are known; the propagation of fire can be estimated. This propagation can then be visualized in any 3D-GIS environment that supports KML files.
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Heybeli'nin çamları
(1994) Oktay, Ahmet
Open Access
A multi-sensor network for the protection of cultural heritage
(IEEE, 2011) Grammalidis, N.; Çetin, A. Enis; Dimitropoulos, K.; Tsalakanidou F.; Köse, Kıvanç; Günay, Osman; Gouverneur, B.; Torri, D.; Kuruoglu, E.; Tozzi, S.; Benazza, A.; Chaabane F.; Kosucu, B.; Ersoy, C.
The paper presents a novel automatic early warning system to remotely monitor areas of archaeological and cultural interest from the risk of fire. Since these areas have been treasured and tended for very long periods of time, they are usually surrounded by old and valuable vegetation or situated close to forest regions, which exposes them to an increased risk of fire. The proposed system takes advantage of recent advances in multi-sensor surveillance technologies, using optical and infrared cameras, wireless sensor networks capable of monitoring different modalities (e.g. temperature and humidity) as well as local weather stations on the deployment site. The signals collected from these sensors are transmitted to a monitoring centre, which employs intelligent computer vision and pattern recognition algorithms as well as data fusion techniques to automatically analyze sensor information. The system is capable of generating automatic warning signals for local authorities whenever a dangerous situation arises, as well as estimating the propagation of the fire based on the fuel model of the area and other important parameters such as wind speed, slope, and aspect of the ground surface. © 2011 EURASIP.
Open Access
PIR sensörleriyle alev tespiti
(IEEE, 2008-04) Töreyin, B. Uǧur; Soyer, E. Birey; Urfalıoǧlu, Onay; Çetin, A. Enis
Bu bildiride, pasif kızılberisi sensor (PIR) tabanlı bir alev tespit sistemi sunulmaktadır. Önerilen yangın tespit sistemi oda içlerinde kullanılabilir. Kontrolsuz büyüyen yangın alevlerindeki kırpışma, oda içi gündelik insan hareketleri olan yürüme ve koşma ile birlikte, PIR sensörü işaretlerinin dalgacık dönüşümü katsayılarıyla eğitilmiş bir dizi saklı Markov modeliyle modellenmiştir. Sensör sisteminin görüş alanı içerisinde bir hareket tespit edildiğinde, sensör sinyali dalgacık domeninde çözümlenmekte ve bir dizi saklı Markov modeline beslenmektedir. En yüksek olasılık değerini üreten saklı Markov modeline göre “ateş” veya "ateş değil" kararı verilmektedir.
Open Access
Real-time wildfire detection using correlation descriptors
(IEEE, 2011) Habiboğlu, Y. Hakan; Günay, Osman; Çetin, A. Enis
A video based wildfire detection system that based on spatio-temporal correlation descriptors is developed. During the initial stages of wildfires smoke plume becomes visible before the flames. The proposed method uses background subtraction and color thresholds to find the smoke colored slow moving regions in video. These regions are divided into spatio-temporal blocks and correlation features are extracted from the blocks. Property sets that represent both the spatial and the temporal characteristics of smoke regions are used to form correlation descriptors. An SVM classifier is trained and tested with descriptors obtained from video data containing smoke and smoke colored objects. Experimental results are presented. © 2011 EURASIP.
Open Access
Sensors in assisted living: a survey of signal and image processing methods
(Institute of Electrical and Electronics Engineers, 2016-03) Erden, F.; Velipasalar, S.; Alkar, A. Z.; Çetin, A. Enis
Our society will face a notable demographic shift in the near future. According to a United Nations report, the ratio of the elderly population (aged 60 years or older) to the overall population increased from 9.2% in 1990 to 11.7% in 2013 and is expected to reach 21.1% by 2050 [1]. According to the same report, 40% of older people live independently in their own homes. This ratio is about 75% in the developed countries. These facts will result in many societal challenges as well as changes in the health-care system, such as an increase in diseases and health-care costs, a shortage of caregivers, and a rise in the number of individuals unable to live independently [2]. Thus, it is imperative to develop ambient intelligence-based assisted living (AL) tools that help elderly people live independently in their homes. The recent developments in sensor technology and decreasing sensor costs have made the deployment of various sensors in various combinations viable, including static setups as well as wearable sensors. This article presents a survey that concentrates on the signal processing methods employed with different types of sensors. The types of sensors covered are pyro-electric infrared (PIR) and vibration sensors, accelerometers, cameras, depth sensors, and microphones.
Open Access
A Wi-Fi cluster based wireless sensor network application and deployment for wildfire detection
(Hindawi Publishing Corporation, 2014) Ulucinar, A.R.; Korpeoglu I.; Cetin, A.E.
We introduce the wireless sensor network (WSN) data harvesting application we developed for wildfire detection and the experiments we have performed. The sensor nodes are equipped with temperature and relative humidity sensors. They are organized into clusters and they communicate with the cluster heads using 802.15.4/ZigBee wireless links. The cluster heads report the harvested data to the control center using 802.11/Wi-Fi links. We introduce the hardware and the software architecture of our deployment near Rhodiapolis, an ancient city raising on the outskirts of Kumluca county of Antalya, Turkey. We detail our technical insights into the deployment based on the real-world data collected from the site. We also propose a temperature-based fire detection algorithm and we evaluate its performance by performing experiments in our deployment site and also in our university. We observed that our WSN application can reliably report temperature data to the center quickly and our algorithms can detect fire events in an acceptable time frame with no or very few false positives. © 2014 Alper Rifat Ulucinar et al.
Open Access
Wildfire detection using LMS based active learning
(IEEE, 2009-04) Töreyin, B. Uğur; Çetin, A. Enis
A computer vision based algorithm for wildfire detection is developed. The main detection algorithm is composed of four sub-algorithms detecting (i) slow moving objects, (ii) gray regions, (iii) rising regions, and (iv) shadows. Each algorithm yields its own decision as a real number in the range [-1,1] at every image frame of a video sequence. Decisions from subalgorithms are fused using an adaptive algorithm. In contrast to standard Weighted Majority Algorithm (WMA), weights are updated using the Least Mean Square (LMS) method in the training (learning) stage. The error function is defined as the difference between the overall decision of the main algorithm and the decision of an oracle, who is the security guard of the forest look-out tower. ©2009 IEEE.
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Yangın söndürme helikopter pilotu, emekli subay: Ali Akgün'ün hayatı ve mesleğinin detayları
(Bilkent University, 2020) Candemir, Mine; Kındıra, Doğa; Güney, Batuhan; Taştekin, Fahrettin; Aksümer, Salih
Bu araştırmada yangın söndürme helikopter pilotu Ali Akgün'ün çocukluğu, eğitim hayatı, pilotluk eğitmenliği, mesleği ve mesleğinin uygulanma biçimi, çalıştığı kurumun teknolojik gelişmelerle birlikte helikopterle yangın söndürme konusundaki günümüzdeki ve geçmişteki yeri incelenecektir. Ormanların geniş yüzölçümü kapladığı Türkiye'de orman yangınları doğal yaşamı tehdit eden bir sorundur, bu sorunla mücadelede kullanılan yöntemleri, sürecin işleyişini, tarihsel gelişimini canlı bir tanıktan öğrenmek bu konudaki bilinci arttırmak için önemli bir adımdır. Akgün, 1988 yılında kurulan Orman Genel Müdürlüğü Havacılık Şube Müdürlüğünde 2010 yılına kadar orman yangınlarıyla mücadele amaçlı kullanılan helikopterlerde kaptan pilot olarak görev yapmıştır. Mesleğini uzun yıllar sürdüren emekli subay, Türkiye'nin kanayan yaralarından biri olan orman yangınlarıyla mücadele etmiştir.