Now showing items 1-15 of 15

    • Compressive sensing based flame detection in infrared videos 

      Günay O.; Enis Çetin, A. (2013)
      In this paper, a Compressive Sensing based feature extraction algorithm is proposed for flame detection using infrared cameras. First, bright and moving regions in videos are detected. Then the videos are divided into ...
    • Computer vision based method for real-time fire and flame detection 

      Töreyin, B. U.; Dedeoǧlu, Y.; Güdükbay U.; Çetin, A. E. (Elsevier BV, 2006-01-01)
      This paper proposes a novel method to detect fire and/or flames in real-time by processing the video data generated by an ordinary camera monitoring a scene. In addition to ordinary motion and color clues, flame and fire ...
    • Contact-free measurement of respiratory rate using infrared and vibration sensors 

      Erden, F.; Alkar, A. Z.; Cetin, A. E. (Elsevier BV, 2015)
      Respiratory rate is an essential parameter in many practical applications such as apnea detection, patient monitoring, and elderly people monitoring. In this paper, we describe a novel method and a contact-free multi-modal ...
    • Edge projections for eye localization 

      Turkan, M.; Pardas, M.; Cetin, A. E. (SPIE - International Society for Optical Engineering, 2008)
      An algorithm for human-eye localization in images is presented for faces with frontal pose and upright orientation. A given face region is filtered by a highpass wavelet-transform filter. In this way, edges of the region ...
    • Hand gesture based remote control system using infrared sensors and a camera 

      Erden, F.; Çetin, A. (Institute of Electrical and Electronics Engineers, 2014)
      In this paper, a multimodal hand gesture detection and recognition system using differential Pyroelectric Infrared (PIR) sensors and a regular camera is described. Any movement within the viewing range of the differential ...
    • Heart sound segmentation using signal processing methods 

      Şahin, Devrim (Bilkent University, 2015)
      Heart murmurs are pathological heart sounds that originate from blood flowing with abnormal turbulence due to physiological defects of the heart, and are the prime indicator of many heart-related diseases. Murmurs can ...
    • Human eye localization using edge projections 

      Türkan, M.; Pardàs, M.M.; Çetin, A. E. (2007)
      in this paper, a human eye localization algorithm in images and video is presented for faces with frontal pose and upright orientation. A given face region is filtered by a high-pass filter of a wavelet transform. In this ...
    • Image processing algorithms for histopathological images 

      Oğuz, Oğuzhan (Bilkent University, 2016-03)
      Conventionally, a pathologist examines cancer cell morphologies under microscope. This process takes a lot of time and is subject to human mistakes. Computer aided diagnosis (CAD) systems and modules aim to help ...
    • Moving object detection using adaptive subband decomposition and fractional lower-order statistics in video sequences 

      Bagci, A. M.; Yardimci, Y.; Çetin, A. E. (Elsevier, 2002)
      In this paper, a moving object detection method in video sequences is described. In the first step, the camera motion is eliminated using motion compensation. An adaptive subband decomposition structure is then used to ...
    • New methods for robust speech recognition 

      Erzin, Engin (Bilkent University, 1995)
      New methods of feature extraction, end-point detection and speech enhcincement are developed for a robust speech recognition system. The methods of feature extraction and end-point detection are based on wavelet analysis ...
    • Small moving object detection using adaptive subband decomposition and fractional lower order statistics in video sequences 

      Bagci, A.M.; Yardimci, Y.; Çetin, A.E. (2001)
      In this paper, a small moving object method detection method in video sequences is described. In the first step, the camera motion is eliminated using motion compensation. An adaptive subband decomposition structure is ...
    • Video processing algorithms for wildfire surveillance 

      Günay, Osman (Bilkent University, 2015-05)
      We propose various image and video processing algorithms for wild re surveillance. The proposed methods include; classi er fusion, online learning, real-time feature extraction, image registration and optimization. We ...
    • VOC gas leak detection using pyro-electric infrared sensors 

      Erden F.; Soyer, E.B.; Toreyin, B.U.; Çetin, A.E. (2010)
      In this paper, we propose a novel method for detecting and monitoring Volatile Organic Compounds (VOC) gas leaks by using a Pyro-electric (or Passive) Infrared (PIR) sensor whose spectral range intersects with the absorption ...
    • Volatile organic compound plume detection using wavelet analysis of video 

      Töreyin, B.U.; Çetin, A.E. (2008)
      A video based method to detect volatile organic compounds (VOC) leaking out of process equipments used in petrochemical refineries is developed. Leaking VOC plume from a damaged component causes edges present in image ...
    • Wavelet based flickering flame detector using differential PIR sensors 

      Erden, F.; Toreyin, B. U.; Soyer, E. B.; Inac, I.; Gunay, O.; Kose, K.; Cetin, A. E. (Elsevier, 2012-07-06)
      A Pyro-electric Infrared (PIR) 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 ...