Now showing items 1-7 of 7

    • Estimation of depth fields suitable for video compression based on 3-D structure and motion of objects 

      Alatan, A. A.; Onural, L. (Institute of Electrical and Electronics Engineers, 1998-06)
      Intensity prediction along motion trajectories removes temporal redundancy considerably in video compression algorithms. In three-dimensional (3-D) object-based video coding, both 3-D motion and depth values are required ...
    • Exact diffraction calculation from fields specified over arbitrary curved surfaces 

      Esmer, G. B.; Onural, L.; Ozaktas, H. M. (Elsevier, 2011-07-30)
      Calculation of the scalar diffraction field over the entire space from a given field over a surface is an important problem in computer generated holography. A straightforward approach to compute the diffraction field from ...
    • Joint source-channel coding and guessing with application to sequential decoding 

      Arikan, E.; Merhav, N. (Institute of Electrical and Electronics Engineers, 1998-09)
      We extend our earlier work on guessing subject to distortion to the joint source-channel coding context. We consider a system in which there is a source connected to a destination via a channel and the goal is to reconstruct ...
    • Optimal filtering in fractional Fourier domains 

      Kutay, M. Alper; Onural, Levent; Özaktaş Haldun M.; Arıkan, Orhan (IEEE, 1995)
      The ordinary Fourier transform is suited best for analysis and processing of time-invariant signals and systems. When we are dealing with time-varying signals and systems, filtering in fractional Fourier domains might allow ...
    • Piecewise-planar 3D reconstruction in rate-distortion sense 

      İmre, E.; Güdükbay, Uğur; Alatan, A. A. (IEEE, 2007-05)
      In this paper, a novel rate-distortion optimization inspired 3D piecewise-planar reconstruction algorithm is proposed. The algorithm refines a coarse 3D triangular mesh, by inserting vertices in a way to minimize the ...
    • Rate-distortion based piecewise planar 3D scene geometry representation 

      Imre, E.; Alatan, A.A.; Güdükbay, Uğur (IEEE, 2006)
      This paper proposes a novel 3D piecewise planar reconstruction algorithm, to build a 3D scene representation that minimizes the intensity error between a particular frame and its prediction. 3D scene geometry is exploited ...
    • Rate-distortion optimized layered stereoscopic video streaming with raptor codes 

      Tan, A. Serdar; Aksay, A.; Bilen, C.; Bozdağı-Akar, G.; Arıkan, Erdal (IEEE, 2007)
      A near optimal streaming system for stereoscopic video is proposed. Initially, the stereoscopic video is separated into three layers and the approximate analytical model of the Rate-Distortion (RD) curve of each layer is ...