Now showing items 1-13 of 13

    • 3D human pose search using oriented cylinders 

      Pehlivan, Selen; Duygulu, Pınar (IEEE, 2009-09-10)
      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 ...
    • Histogram of oriented rectangles: a new pose descriptor for human action recognition 

      İkizler, N.; Duygulu, P. (Elsevier BV, 2009-09-02)
      Most of the approaches to human action recognition tend to form complex models which require lots of parameter estimation and computation time. In this study, we show that, human actions can be simply represented by pose ...
    • Human action recognition with line and flow histograms 

      İkizler, Nazlı; Cinbiş, R. Gökberk; Duygulu, Pınar (IEEE, 2008-12)
      We present a compact representation for human action recognition in videos using line and optical flow histograms. We introduce a new shape descriptor based on the distribution of lines which are fitted to boundaries of ...
    • A key-pose based representation for human action recognition 

      Kurt, Mehmet Can (Bilkent University, 2011)
      This thesis utilizes a key-pose based representation to recognize human actions in videos. We believe that the pose of the human figure is a powerful source for describing the nature of the ongoing action in a frame. ...
    • Knives are picked before slices are cut: Recognition through activity sequence analysis 

      İşcen, Ahmet; Duygulu, Pınar (ACM, 2013-10)
      In this paper, we introduce a model to classify cooking activities using their visual and temporal coherence information. We fuse multiple feature descriptors for fine-grained activity recognition as we would need every ...
    • A line based pose representation for human action recognition 

      Baysal, S.; Duygulu, P. (2013)
      In this paper, we utilize a line based pose representation to recognize human actions in videos. We represent the pose in each frame by employing a collection of line-pairs, so that limb and joint movements are better ...
    • A new pose-based representation for recognizing actions from multiple cameras 

      Pehlivan, S.; Duygulu, P. (Academic Press, 2011-02)
      We address the problem of recognizing actions from arbitrary views for a multi-camera system. We argue that poses are important for understanding human actions and the strength of the pose representation affects the overall ...
    • Pose sentences : a new representation for understanding human actions 

      Hatun, Kardelen (Bilkent University, 2008)
      In this thesis we address the problem of human action recognition from video sequences. Our main contribution to the literature is the compact use of poses while representing videos and most importantly considering actions ...
    • Pose sentences: a new representation for action recognition using sequence of pose words 

      Hatun, Kardelen; Duygulu, Pınar (IEEE, 2008-12)
      We propose a method for recognizing human actions in videos. Inspired from the recent bag-of-words approaches, we represent actions as documents consisting of words, where a word refers to the pose in a frame. Histogram ...
    • Prototypes : exemplar based video representation 

      Yalçınkaya, Özge (Bilkent University, 2016-06)
      Recognition of actions from videos is a widely studied problem and there have been many solutions introduced over the years. Labeling of the training data that is required for classification has been an important bottleneck ...
    • Snippet based trajectory statistics histograms for assistive technologies 

      İscen, Ahmet; Wang Y.; Duygulu, Pınar; Hauptmann, A. (Springer, 2014-09)
      Due to increasing hospital costs and traveling time, more and more patients decide to use medical devices at home without traveling to the hospital. However, these devices are not always very straight-forward for usage, ...
    • Vision based behavior recognition of laboratory animals for drug analysis and testing 

      Sandıkcı, Selçuk (Bilkent University, 2009)
      In pharmacological experiments, a popular method to discover the effects of psychotherapeutic drugs is to monitor behaviors of laboratory mice subjected to drugs by vision sensors. Such surveillance operations are currently ...
    • Yüksek boyutlu öznitelik uzayında hareket tanıma 

      Adıgüzel, Hande; Erdem, Hayrettin; Ferhatosmanoǧlu, Hakan; Duygulu, Pınar (IEEE, 2013-04)
      Analyzing and interpreting human actions is an important and challenging area of computer vision. Different solutions are used for representing human actions; we prefer to use spatio-temporal interest points for motion ...