Browsing by Keywords "Signal detection"

Now showing items 21-40 of 46

    • Flame detection method in video using covariance descriptors 

      Habiboǧlu, Y.H.; Günay, Osman; Çetin, A. Enis (IEEE, 2011)
      Video fire detection system which uses a spatio-temporal covariance matrix of video data is proposed. This system divides the video into spatio-temporal blocks and computes covariance features extracted from these blocks ...

    • Fuzzy color histogram-based video segmentation 

      Küçüktunç, O.; Güdükbay, Uğur; Ulusoy, Özgür (Academic Press, 2010)
      We present a fuzzy color histogram-based shot-boundary detection algorithm specialized for content-based copy detection applications. The proposed method aims to detect both cuts and gradual transitions (fade, dissolve) ...

    • Hypothesis testing under subjective priors and costs as a signaling game 

      Sarıtaş, S.; Gezici, Sinan; Yüksel, S. (IEEE, 2019)
      Many communication, sensor network, and networked control problems involve agents (decision makers) which have either misaligned objective functions or subjective probabilistic models. In the context of such setups, we ...

    • Impedimetric detection and lumped element modelling of a hemagglutination assay in microdroplets 

      Marcali, M.; Elbuken, C. (Royal Society of Chemistry, 2016)
      Droplet-based microfluidic systems offer tremendous benefits for high throughput biochemical assays. Despite the wide use of electrical detection for microfluidic systems, application of impedimetric sensing for droplet ...

    • İyonküre elektron içeriği kullanılarak deprem öncül tespit sinyali oluşturulması 

      Akyol, Ali Alp; Arıkan, Orhan; Arıkan, F. (IEEE, 2014-04)
      Sismik olayların iyonküredeki elektron dağılımını etkilediği ve bu etkinin bir kaynağının sismik hareketlilik öncesi kayaçların sıkışması sonucu kayaç yüzeylerinde oluşan elektrik alanın yol açtığı iyonlaşma olduğu yakın ...

    • LOS/NLOS detection for UWB signals: A comparative study using experimental data 

      Decarli, N.; Dardari, D.; Gezici, Sinan; D'Amico, A.A. (IEEE, 2010)
      In this paper the problem of detecting the channel state between LOS and NLOS conditions is addressed using UWB signals. A new distribution-based identification approach is proposed and its performance is compared with ...

    • Mean-shift tracking of moving objects using multi-dimensional histograms 

      Cüce, Halil I.; Çetin, A. Enis (Society of Photo-Optical Instrumentation Engineers (SPIE), 2004-04)
      In this paper, a moving object tracking algorithm for infrared image sequences is presented. The tracking algorithm is based on the mean-shift tracking method which is based on comparing the histograms of moving objects ...

    • Moving region detection in wavelet compressed video 

      Töreyin, B. Uğur; Çetin, A. Enis; Aksay, Anıl; Akhan, M. B. (IEEE, 2004)
      In many vision based surveillance systems the video is stored in wavelet compressed form. In this study, an algorithm for moving object and region detection in video that is compressed using a wavelet transform (WT) is ...

    • A new detection method for capacitive micromachine ultrasonic transducers 

      Ergun, A. S.; Temelkuran, B.; Özbay, Ekmel; Atalar, Abdullah (IEEE, 2001)
      Capacitive micromachine ultrasonic transducers (cMUT) have become an alternative to piezoelectric transducers in the past few years. They consist of many small circular membranes that are connected in parallel. In this ...

    • Noise enhanced detection in the restricted Bayesian framework 

      Bayram, Suat; Gezici, Sinan; Poor H.V. (IEEE, 2010)
      Effects of additive independent noise are investigated for sub-optimal detectors according to the restricted Bayes criterion. The statistics of optimal additive noise are characterized. Also, sufficient conditions for ...

    • Noise-enhanced M-ary hypothesis-testing in the minimax framework 

      Bayram, Suat; Gezici, Sinan (IEEE, 2009-09)
      In this study, the effects of adding independent noise to observations of a suboptimal detector are studied for M-ary hypothesis-testing problems according to the minimax criterion. It is shown that the optimal additional ...

    • Online anomaly detection in case of limited feedback with accurate distribution learning 

      Marivani, Iman; Kari, Dariush; Kurt, Ali Emirhan; Manış, Eren (IEEE, 2017)
      We propose a high-performance algorithm for sequential anomaly detection. The proposed algorithm sequentially runs over data streams, accurately estimates the nominal distribution using exponential family and then declares ...

    • Optimal signaling and detector design for power constrained on-off keying systems in Neyman-Pearson framework 

      Dulek, Berkan; Gezici, Sinan (IEEE, 2011)
      Optimal stochastic signaling and detector design are studied for power constrained on-off keying systems in the presence of additive multimodal channel noise under the Neyman-Pearson (NP) framework. The problem of jointly ...

    • Parçacık sürü Optimizasyonu ile Dağıtık Tespit 

      İnce, O.; Efe, M.; Arıkan, Orhan (IEEE, 2011-04)
      Doğadan esinlenerek geliştirilen optimizasyon yöntemleri, kullanım kolaylıkları ve yüksek performansları nedeniyle pek çok farklı disiplinde kendilerine uygulama alanı bulmaktadırlar. Bu çalışmada, son yıllarda yoğun ilgi ...

    • Piecewise constant line fitting on noisy ramped signals by particle swarm optimization 

      Özer, Berk; Altıntaş, Ayhan; Moral, Gökhan; Arıkan, Orhan (IEEE, 2012)
      In this study, Particle Swarm Optimization(PSO) is proposed for change point (edge) detection on noisy ramped signals. By taking moving averages between detected edges, noise on ramped signals is filtered and desired ...

    • PIR sensörleriyle alev tespiti 

      Töreyin, B. Uǧur; Soyer, E. Birey; Urfalıoǧlu, Onay; Çetin, A. Enis (IEEE, 2008-04)
      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 ...

    • Respiratory rate monitoring using infrared sensors 

      Erden, Fatih; Çetin, A. Enis (IEEE, 2016)
      Respiratory rate is an essential parameter in many practical applications such as patient and elderly people monitoring. In this paper, a novel contact-free system is introduced to detect the human breathing activity. The ...

    • Sequential sensor installation for wiener disorder detection 

      Dayanik, S.; Sezer, S. O. (Institute for Operations Research and the Management Sciences (I N F O R M S), 2016)
      We consider a centralized multisensor online quickest disorder detection problem where the observation from each sensor is a Wiener process gaining a constant drift at a common unobservable disorder time. The objective is ...

    • Systematic evaluation of face detection algorithms on news videos 

      Acar, Can; Atlas, Arda; Çevik, Koray; Ölmez İsa; Ünlü, Mustafa; Özkan, Derya; Duygulu, Pınar (IEEE, 2007)
      People are the most important subjects in news videos and for proper retrieval of people images; face detection is a very crucial step. However, face detection and recognition in news videos is a very challenging task due ...

    • Tarım alanlarında doğrusal odunsu bitki gruplarının otomatik sezimi 

      Akçay, H. Gökhan; Aksoy, Selim (IEEE, 2009-04)
      Tarım alanlarının otomatik haritalanması ve izlenmesi önemli bir araştırma konusudur. Bu bildiride, çok yüksek çözünürlükteki uydu görüntülerinde doğrusal şeritler halindeki odunsu bitki gruplarının otomatik olarak sezilmesi ...