Now showing items 1-20 of 107

    • 3D model compression using connectivity-guided adaptive wavelet transform built into 2D SPIHT 

      Köse K.; Çetin, A. Enis; Güdükbay, Uğur; Onural, L. (Academic Press, 2010-01)
      Connectivity-Guided Adaptive Wavelet Transform based mesh compression framework is proposed. The transformation uses the connectivity information of the 3D model to exploit the inter-pixel correlations. Orthographic ...
    • ACMICS: an agent communication model for interacting crowd simulation 

      Kullu, K.; Güdükbay, Uğur; Manocha, D. (Springer, 2017)
      Behavioral plausibility is one of the major aims of crowd simulation research. We present a novel approach that simulates communication between the agents and assess its influence on overall crowd behavior. Our formulation ...
    • ACMICS: An agent communication model for interacting crowd simulation: JAAMAS track 

      Kullu, K.; Güdükbay, Uğur; Manocha, D. (International Foundation for Autonomous Agents and Multiagent Systems (IFAAMAS), 2018)
      We present and evaluate a novel approach to simulate communication between the agents. Our approach distinguishes low- And high-level communication tasks. This separation makes it easy to extend and use it in new scenarios. ...
    • Animation of deformable models 

      Güdükbay, Uğur; Özgüç, B. (Pergamon Press, 1994)
      Although kinematic modelling methods are adequate for describing the shapes of static objects, they are insufficient when it comes to producing realistic animation. Physically based modelling remedies this problem by ...
    • An animation system for rigid and deformable models 

      Güdükbay, Uğur; Özgüç, B.; Tokad, Y. (1993)
      We describe a system for the animation of rigid and deformable models. The system uses the approaches from elasticity theory for animating the models. Two different formulations, namely the primal and the hybrid formulations, ...
    • Application-specific heterogeneous network-on-chip design 

      Demirbas, D.; Akturk, I.; Ozturk, O.; Güdükbay, Uğur (Oxford University Press, 2014)
      As a result of increasing communication demands, application-specific and scalable Network-on-Chips (NoCs) have emerged to connect processing cores and subsystems in Multiprocessor System-on-Chips. A challenge in ...
    • An approximation algorithm for computing the visibility region of a point on a terrain and visibility testing 

      Alipour, S.; Ghodsi, M.; Güdükbay, Uğur; Golkari, M. (IEEE, 2014-01)
      Given a terrain and a query point p on or above it, we want to count the number of triangles of terrain that are visible from p. We present an approximation algorithm to solve this problem. We implement the algorithm and ...
    • Approximation algorithms for visibility computation and testing over a terrain 

      Alipour S.; Ghodsi M.; Güdükbay, Uğur; Golkari M. (Springer, 2017)
      Given a 2.5D terrain and a query point p on or above it, we want to find the triangles of terrain that are visible from p. We present an approximation algorithm to solve this problem. We implement the algorithm and test ...
    • Augmentation of virtual agents in real crowd videos 

      Doğan, Yalım; Demirci, Serkan; Güdükbay, Uğur; Dibeklioğlu, Hamdi (Springer, 2019)
      Augmenting virtual agents in real crowd videos is an important task for different applications from simulations of social environments to modeling abnormalities in crowd behavior. We propose a framework for this task, ...
    • Automatic detection of salient objects and spatial relations in videos for a video database system 

      Sevilmiş, T.; Baştan M.; Güdükbay, Uğur; Ulusoy, Özgür (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 ...
    • Baǧlanırlıkla yönlendirilmiş uyarlamalı dalgacık dönüşümü ile üç boyutlu model sıkıştırılması 

      Köse, Kıvanç; Çetin, A. Enis; Güdükbay, Uğur; Onural, Levent (IEEE, 2007-06)
      Dikdörtgensel olmayan dalgacık dönüşümüne dayalı çok çözünürlüklü üç boyutlu model sıkıştırılması için iki yöntem önerilmektedir. Bunlar Sıradüzensel Ağaç Yapılarının Kümelere Bölütlenmesi (Set Partitioning In Hierarchical ...
    • Beyond tradition and modernity: digital shadow theater 

      Güdükbay, Uğur; Erol, F.; Erdogan, N. (M I T Press, 2000)
    • BilKristal 2.0: a tool for pattern information extraction from crystal structures 

      Okuyan, E.; Güdükbay, Uğur (Elsevier BV, 2014-01)
      We present a revised version of the BilKristal tool of Okuyan et al. (2007). We converted the development environment into Microsoft Visual Studio 2005 in order to resolve compatibility issues. We added multi-core CPU ...
    • Bilvideo-7: an MPEG-7-compatible video indexing and retrieval system 

      Baştan M.; Çam, H.; Güdükbay, Uğur; Ulusoy, Özgür (Institute of Electrical and Electronics Engineers, 2010-07)
      BilVideo-7 is an MPEG-7-compatible, distributed, video indexing and retrieval system that supports complex multimodal queries in a unified framework.
    • BilVideo: a video database management system 

      Dönderler, M. E.; Şaykol, E.; Ulusoy, Özgür; Güdükbay, Uğur (IEEE, 2003)
      The BilVideo video database management system provides integrated support for spatiotemporal and semantic queries for video. BilVideo can support any application with video data searching needs. It's query language provides ...
    • BilVideo: Design and implementation of a video database management system 

      Dönderler, M. E.; Şaykol, E.; Arslan, U.; Ulusoy, Özgür; Güdükbay, Uğur (Springer, 2005)
      With the advances in information technology, the amount of multimedia data captured, produced, and stored is increasing rapidly. As a consequence, multimedia content is widely used for many applications in today's world, ...
    • Bina tahsis planlarından 3-boyutlu şehir modellerinin üretilmesi ve görüntülenmesi 

      Oǧuz, Oğuzcan; Aran, Medeni Erol; Yilmaz, Türker; Güdükbay, Uğur (IEEE, 2006-04)
      This paper presents a method for the automatic generation of different building models to be used to populate virtual cities and a system of visualization of generated city models. The proposed method incorporates randomness ...
    • Combined filtering and key-frame reduction of motion capture data with application to 3DTV 

      Önder, Onur; Erdem, Ç.; Erdem, T.; Güdükbay, Uğur; Özgüç, Bülent (WSCG, 2006-01-02)
      A new method for combined filtering and key-frame reduction of motion capture data is proposed. Filtering of motion capture data is necessary to eliminate any jitter introduced by a motion capture system. Key-frame reduction, ...
    • Computer vision based method for real-time fire and flame detection 

      Töreyin, B. U.; Dedeoǧlu, Y.; Güdükbay, Uğur; Çetin, A. Enis (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 ...
    • Computer vision based text and equation editor for LATEX 

      Öksüz, Özcan; Güdükbay, Uğur; Çetin, Enis (IEEE, 2004-06)
      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 ...