DSpace@Çankaya

Yazar "Töreyin, Behçet Uğur" için listeleme

Yazar "Töreyin, Behçet Uğur" için listeleme

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  • Adaptive decision fusion based framework for short-term wind speed and turbulence intensity forecasting: case study for North West of Turkey 
    Dinçkal, Çiğdem; Töreyin, Behçet Uğur; Küçükali, Serhat (Tubitak Scientific & Technical Research Council Turkey, 2017)
    In this paper, an online learning framework called adaptive decision fusion (ADF) is employed for short-term wind speed and turbulence intensity forecasting by use of wind speed data for each season for the city of Izmit, ...
  • An online adaptive cooperation scheme for spectrum sensing based on a second-order statistical method 
    Yarkan, Serhan; Töreyin, Behçet Uğur; Qaraqe, Khalid A.; Çetin, A. Enis (IEEE-Inst Electrical Electronics Engineers Inc, 2012-02)
    Spectrum sensing is one of the most important features of cognitive radio (CR) systems. Although spectrum sensing can be performed by a single CR, it is shown in the literature that cooperative techniques, including multiple ...
  • Entropy-Functional-Based Online Adaptive Decision Fusion Framework With Application to Wildfire Detection in Video 
    Günay, Osman; Töreyin, Behçet Uğur; Köse, Kıvanç; Çetin, Enis (IEEE-Inst Electrical Electronics Engineers Inc, 2012-05)
    In this paper, an entropy-functional-based online adaptive decision fusion (EADF) framework is developed for image analysis and computer vision applications. In this framework, it is assumed that the compound algorithm ...
  • Evaluation of Clustering Performance of Hyperspectral Bands 
    Haliloğlu, Onur; Sakarya, Ufuk; Töreyin, Behçet Uğur (IEEE, 2015)
    Hyperspectral images have huge data volume that contains spectral and spatial information. This high data volume leads to processing, storage, and transmission problems. Moreover, insufficient training data results in ...
  • Evaluation of on-board integer wavelet transform based spectral decorrelation schemes for lossless compression of hyperspectral images 
    Töreyin, Behçet Uğur; Yılmaz, Ozan; Mert, Yakup Murat (2014)
    Integer-coefficient Discrete Wavelet Transformation (DWT) filters widely used in the literature are implemented and investigated as spectral decorrelator for on-board lossless hyperspectral image compression. As ...
  • Fall detection using single-tree complex wavelet transform 
    Yazar, Ahmet; Keskin, Furkan; Töreyin, Behçet Uğur; Çetin, A. Enis (Elsevier Science Bv, 2013-11-01)
    The goal of Ambient Assisted Living (AAL) research is to improve the quality of life of the elderly and handicapped people and help them maintain an independent lifestyle with the use of sensors, signal processing and ...
  • Flow structure and fish passage performance of a brush-type fish way: a field study in the yidere River, Turkey 
    Küçükali, Serhat; Verep, Bülent; Alp, Ahmet; Turan, Davut; Mutlu, Tanju; Kaya, Cüneyt; Yıldırım, Yasin; Töreyin, Behçet Uğur; Özelçi, Dursun (Csiro Publishing, 2019)
    The fish passage performance and flow structure of a brush fish pass were investigated at the ncirli Small Hydropower Plant on the yidere River, located in the East Black Sea region of Turkey. The spatial distributions of ...
  • Graph-Cut-based Compression Algorithm for Compressed-Sensed Image Acquisition 
    Alaydin, Julide Gulen; Gülen, Seden Hazal; Trocan, Maria; Töreyin, Behçet Uğur (IEEE, 2014)
    The purpose of the paper is to find the best quantizer allocation for compressed-sensed acquired images, by using a graph-cut quantizer allocation method. The compressed sensed acquisition is realized in a block-based ...
  • Image Analysis Based Fish Tail Beat Frequency Estimation for Fishway Efficiency 
    Yıldırım, Yasin; Töreyin, Behçet Uğur; Küçükali, Serhat; Verep, Bülent; Turan, Davut; Alp, Ahmet (IEEE Computer Soc, 2018)
    In this paper, we propose image analysis based methods for estimating fish tail beat frequency, which is an indicator of fish energy consumption at fish passage structures. For this purpose, average magnitude difference ...
  • Joint parameter and state estimation of the hemodynamic model by iterative extended Kalman smoother 
    Aslan, Serdar; Cemgil, Ali Taylan; Aslan, Murat Samil; Töreyin, Behçet Uğur; Akın, Ata (Elsevier SCI LTD, 2016-02)
    The joint estimation of the parameters and the states of the hemodynamic model from the blood oxygen level dependent (BOLD) signal is a challenging problem. In the functional magnetic resonance imaging (fMRI) literature, ...
  • Lossless Hyperspectral Image Compression Using Wavelet Transform Based Spectral Decorrelation 
    Töreyin, Behçet Uğur; Yılmaz, Ozan; Mert, Yakup Murat; Türk, Fethi (IEEE, 2015)
    Integer-coefficient Discrete Wavelet Transformation (DWT) filters widely used in the literature are implemented and investigated as spectral decorrelator. As the performance of spectral decorrelation step has direct impact ...
  • Lossy Compression of Hyperspectral Images Using Online Learning Based Sparse Coding 
    Ülkü, İrem; Töreyin, Behçet Uğur (IEEE, 2014)
    A lossy hyperspectral image compression method is proposed using online learning based sparse coding. The least number of coefficients are obtained to represent hyperspectral images by applying the sparse coding algorithm ...
  • Sparse coding of hyperspectral imagery using online learning 
    Ülkü, İrem; Töreyin, Behçet Uğur (Springer, 2015-05)
    Sparse coding ensures to express the data in terms of a few nonzero dictionary elements. Since the data size is large for hyperspectral imagery, it is reasonable to use sparse coding for compression of hyperspectral images. ...
  • Sparse representations for online-learning-based hyperspectral image compression 
    Ülkü, İrem; Töreyin, Behçet Uğur (Optical Soc Amer, 2015-10-10)
    Sparse models provide data representations in the fewest possible number of nonzero elements. This inherent characteristic enables sparse models to be utilized for data compression purposes. Hyperspectral data is large in ...
  • Video fire detection - Review 
    Çetin, A. Enis; Dimitropoulos, Kosmas; Gouverneur, Benedict; Grammalidis, Nikos; Günay, Osman; Habiboğlu, Y. Hakan; Töreyin, Behçet Uğur; Verstockt, Steven (Academic Press Inc Elsevier Science, 2013-12)
    This is a review article describing the recent developments in Video based Fire Detection (VFD). Video surveillance cameras and computer vision methods are widely used in many security applications. It is also possible to ...
  • Wavelet based flame detection using differential PIR sensors 
    Erden, F.; Töreyin, Behçet Uğur; Soyer, E. B.; İnaç, İ.; Günay, O.; Köse, K.; Çetin, A. Enis (IEEE, 2012)
    In this paper, a flame detection system using a differential Pyro-electric Infrared (PIR) sensor is proposed. A differential PIR sensor is only sensitive to sudden temperature variations within its viewing range and it ...
  • Wavelet based flickering flame detector using differential PIR sensors 
    Erden, Fatih; Töreyin, Behçet Uğur; Soyer, E.Birey; İnaç, İhsan; Günay, Osman; Köse, Kıvanç; Çetin, A. Enis (Elsevier Science LTD, 2012-10)
    A Pyro-electric Infrared (FIR) sensor based flame detection system is proposed using a Markovian decision algorithm. A differential PIR sensor is only sensitive to sudden temperature variations within its viewing range and ...