Now showing items 1-20 of 30

    • 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 geospatial objects using multiple hierarchical segmentations 

      Akçay, H. G.; Aksoy, S. (Institute of Electrical and Electronics Engineers, 2008-07)
      The object-based analysis of remotely sensed imagery provides valuable spatial and structural information that is complementary to pixel-based spectral information in classification. In this paper, we present novel methods ...
    • Automatic rule learning exploiting morphological features for named entity recognition in Turkish 

      Tatar, S.; Cicekli I. (2011)
      Named entity recognition (NER) is one of the basic tasks in automatic extraction of information from natural language texts. In this paper, we describe an automatic rule learning method that exploits different features of ...
    • Carcinoma cell line discrimination in microscopic images using unbalanced wavelets 

      Keskin F.; Suhre, A.; Erşahin, T.; Çetin-Atalay R.; Çetin, A. E. (2012)
      Cancer cell lines are widely used for research purposes in laboratories all over the world. In this paper, we present a novel method for cancer cell line image classification, which is very costly by conventional methods. ...
    • Cell nuclei segmentation in pap smear test images 

      Kale, A.; Aksoy, S.; Önder, S. (2009)
      Cervical cancer is a preventable disease and the dysplasia it causes can be scanned by using a pap smear test. It can be beneficial to develop a computer-assisted diagnosis system to make the pap smear test robust and ...
    • Cost-aware strategies for query result caching in Web search engines 

      Ozcan, R.; Altingovde, I. S.; Ulusoy, O. (Association for Computing Machinery, 2011)
      Search engines and large-scale IR systems need to cache query results for efficiency and scalability purposes. Static and dynamic caching techniques (as well as their combinations) are employed to effectively cache query ...
    • Extraction of sparse spatial filters using Oscillating Search 

      Onaran I.; Firat Ince, N.; Abosch, A.; Enis Cetin, A. (2012)
      Common Spatial Pattern algorithm (CSP) is widely used in Brain Machine Interface (BMI) technology to extract features from dense electrode recordings by using their weighted linear combination. However, the CSP algorithm, ...
    • Generic text summarization for Turkish 

      Kutlu, M.; Cığır, C.; Cicekli, I. (Oxford University Press, 2010)
      In this paper, we propose a generic text summarization method that generates summaries of Turkish texts by ranking sentences according to their scores. Sentence scores are calculated using their surface-level features, and ...
    • 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 ...
    • Image classification using subgraph histogram representation 

      Özdemir, B.; Aksoy, S. (2010)
      We describe an image representation that combines the representational power of graphs with the efficiency of the bag-of-words model. For each image in a data set, first, a graph is constructed from local patches of interest ...
    • Investigation of litosphere-ionosphere coupling using total electron content 

      Karatay, S.; Arikan F.; Arikan, O. (2009)
      In this study, the relation between Total Electron Content (TEC) estimates obtained from GPS and the earthquakes is examined. Five earthquakes between 2003-2008 occured in Japan with different properties and China earthquake ...
    • Naming of faces on photographs by using the relationship between people 

      Bulut, M.F.; Duygulu P. (2009)
      In this study, we are aiming to name faces of people in photographs which are collected from web. In photographs from the web, some people appear more frequently than some other people. In addition to that, since there are ...
    • Nearest-neighbor based metric functions for indoor scene recognition 

      Cakir, F.; Güdükbay U.; Ulusoy, Ö. (Academic Press, 2011)
      Indoor scene recognition is a challenging problem in the classical scene recognition domain due to the severe intra-class variations and inter-class similarities of man-made indoor structures. State-of-the-art scene ...
    • A new approach to search result clustering and labeling 

      Turel, A.; Can F. (2011)
      Search engines present query results as a long ordered list of web snippets divided into several pages. Post-processing of retrieval results for easier access of desired information is an important research problem. In ...
    • Object detection with contextual inference 

      Kalaycilar F.; Aksoy, S. (2009)
      In this paper, an object detection system that utilizes contextual relationships between individually detected objects to improve the overall detection performance is introduced. The first contribution in this work is the ...
    • On recognizing actions in still images via multiple features 

      Sener F.; Bas, C.; Ikizler-Cinbis, N. (2012)
      We propose a multi-cue based approach for recognizing human actions in still images, where relevant object regions are discovered and utilized in a weakly supervised manner. Our approach does not require any explicitly ...
    • Oscillatory synchronization model of attention to moving objects 

      Yilmaz, O. (Elsevier, 2012)
      The world is a dynamic environment hence it is important for the visual system to be able to deploy attention on moving objects and attentively track them. Psychophysical experiments indicate that processes of both attentional ...
    • Performance evaluation of building detection and digital surface model extraction algorithms: Outcomes of the PRRS 2008 algorithm performance contest 

      Aksoy, S.; Ozdemir, B.; Eckert, S.; Kayitakire F.; Pesarasi, M.; Aytekin O.; Borel, C.C.; Cech J.; Christophe, E.; D̈uzg̈un, S.; Erener, A.; Ertugay, K.; Hussain, E.; Inglada J.; Lefévrë, S.; Ok O.; San, D.K.; Šára, R.; Shan J.; Soman J.; Ulusoy I.; Witz, R. (2008)
      This paper presents the initial results of the Algorithm Performance Contest that was organized as part of the 5th IAPRWorkshop on Pattern Recognition in Remote Sensing (PRRS 2008). The focus of the 2008 contest was automatic ...
    • Pose sentences: A new representation for action recognition using sequence of pose words 

      Hatun, K.; Duygulu P. (2008)
      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 ...
    • Recognizing actions from still images 

      Ikizler, N.; Cinbis, R.G.; Pehlivan, S.; Duygulu P. (2008)
      In this paper, we approach the problem of under- standing human actions from still images. Our method involves representing the pose with a spatial and ori- entational histogramming of rectangular regions on a parse ...