Now showing items 1-18 of 18

    • 3D human pose search using oriented cylinders 

      Pehlivan, S.; Duygulu P. (2009)
      In this study, we present a representation based on a new 3D search technique for volumetric human poses which is then used to recognize actions in three dimensional video sequences. We generate a set of cylinder like 3D ...
    • Automatic detection of salient objects and spatial relations in videos for a video database system 

      Sevilmiş, T.; Baştan M.; Güdükbay U.; Ulusoy, Ö. (Elsevier BV, 2008-10)
      Multimedia databases have gained popularity due to rapidly growing quantities of multimedia data and the need to perform efficient indexing, retrieval and analysis of this data. One downside of multimedia databases is the ...
    • Automatic extraction of important objects for an MPEG-7 compliant video database system 

      Baştan, M.; Güdükbay, U.; Ulusoy Ö. (2008)
      We describe a method to automatically extract video objects, which are important for object-based indexing of videos in an MPEG-7 compliant video database system. Most of the existing salient object detection approaches ...
    • Cepstrum based method for moving shadow detection in video 

      Cogun, F.; Cetin, A. E. (Springer Netherlands, 2010)
      Moving shadows constitute problems in various applications such as image segmentation and object tracking. Main cause of these problems is the misclassification of the shadow pixels as target pixels. Therefore, the use of ...
    • Computer vision based text and equation editor for LATEX 

      Öksüz Ö.; Güdükbay, U.; Çetin, E. (2004)
      In this paper, we present a computer vision based text and equation editor for LATEX. The user writes text and equations on paper and a camera attached to a computer records actions of the user. In particular, positions ...
    • Error resilient layered stereoscopic video streaming 

      Tan, A. S.; Aksay, A.; Bilen, C.; Akar, G. B.; Arikan, E. (2007)
      In this paper, error resilient stereoscopic video streaming problem is addressed. Two different Forward Error Correction (FEC) codes namely Systematic LT and RS codes are utilized to protect the stereoscopic video data ...
    • Flame detection in video using hidden Markov models 

      Töreyin, B. U.; Dedeoğlu, Y.; Çetin, A. E. (Institute of Electrical and Electronics Engineers, 2005)
      This paper proposes a novel method to detect flames in video by processing the data generated by an ordinary camera monitoring a scene. In addition to ordinary motion and color clues, flame flicker process is also detected ...
    • Flame detection method in video using covariance descriptors 

      Habiboǧlu, Y.H.; Günay O.; Çetin, A.E. (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 ...
    • HandVR: a hand-gesture-based interface to a video retrieval system 

      Genç, S.; Baştan M.; Güdükbay U.; Atalay, V.; Ulusoy, Ö. (Springer U K, 2015)
      Using one’s hands in human–computer interaction increases both the effectiveness of computer usage and the speed of interaction. One way of accomplishing this goal is to utilize computer vision techniques to develop ...
    • HMM based falling person detection using both audio and video 

      Töreyin, B. Uğur; Dedeoğlu, Yiğithan; Çetin, A. Enis (IEEE, 2006)
      Automatic detection of a falling person in video is an important problem with applications in security and safety areas including supportive home environments and CCTV surveillance systems. Human motion in video is modeled ...
    • Key frame selection from MPEG video data 

      Gerek O.N.; Altunbasak, Y. (1997)
      This paper describes a method for selecting key frames by using a number of parameters extracted from the MPEG video stream. The parameters are directly extracted from the compressed video stream without decompression. A ...
    • An overview of the holographic display related tasks within the European 3DTV project 

      Onural L.; Ozaktas, H., M.; Stoykova, E.; Gotchev, A.; Watson J. (2006)
      A European consortium has been working since September 2004 on all video-based technical aspects of three-dimensional television. The group has structured its technical activities under five technical committees focusing ...
    • Scalable image quality assessment with 2D mel-cepstrum and machine learning approach 

      Narwaria, M.; Lin, W.; Cetin, A. E. (Elsevier, 2011-07-19)
      Measurement of image quality is of fundamental importance to numerous image and video processing applications. Objective image quality assessment (IQA) is a two-stage process comprising of the following: (a) extraction of ...
    • Segmentation-based extraction of important objects from video for object-based indexing 

      Baştan, M.; Güdükbay, U.; Ulusoy O. (2008)
      We describe a method to automatically extract important video objects for object-based indexing. Most of the existing salient object detection approaches detect visually conspicuous structures in images, while our method ...
    • Summarization of documentaries 

      Demirtas, K.; Cicekli I.; Cicekli, N.K. (2010)
      Video summarization algorithms present condensed versions of a full length video by identifying the most significant parts of the video. In this paper, we propose an automatic video summarization method using the subtitles ...
    • Two-dimensional triangular mesh-based mosaicking for object tracking in the presence of occlusion 

      Toklu, C.; Tekalp, A.M.; Erdem, A.T. (1997)
      In this paper, we describe a method for temporal tracking of video objects in video clips. We employ a 2D triangular mesh to represent each video object, which allows us to describe the motion of the object by the displacements ...
    • Universal product design involving elderly users: a participatory design model 

      Demirbilek, O.; Demirkan, H. (Elsevier, 2004-07)
      Recent studies have shown that people prefer to age in their familiar environments, thus guiding designers to provide a safe and functionally appropriate environment for ageing people, regardless of their physical conditions ...
    • Wildfire detection using LMS based active learning 

      Ugur Toreyin, B.; Enis Cetin, A. (2009)
      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) ...