Now showing items 1-5 of 5

    • The discrete fractional Fourier transform 

      Candan, Çağatay; Kutay, M. Alper; Özaktaş, Haldun M. (IEEE, 1999)
      We propose and consolidate a definition of the discrete fractional Fourier transform which generalizes the discrete Fourier transform (DFT) in the same sense that the continuous fractional Fourier transform (FRT) generalizes ...
    • The discrete fractional Fourier transformation 

      Arıkan, Orhan; Kutay, M. Alper; Özaktaş, Haldun M.; Akdemir, Özer Koray (IEEE, 1996)
      Based on the fractional Fourier transformation of sampled periodic functions, the discrete form of the fractional Fourier transformation is obtained. It is found that only for a certain dense set of fractional orders such ...
    • Enhancement of images corrupted with signal dependent noise: Application to ultrasonic imaging 

      Kutay, M. Alper; Karaman, Mustafa; Bozdağı, Gözde (1993-11)
      An adaptive filter for smoothing images corrupted by signal dependent noise is presented. The filter is mainly developed for speckle suppression in medical B-scan ultrasonic imaging. The filter is based on mean filtering ...
    • 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 ...
    • Solution and cost analysis of general multi-channel and multi-stage filtering circuits 

      Kutay, M. Alper; Arıkan, Orhan; Özaktaş, Haldun M.; Erden, M. F.; Özaktaş, Hakan (IEEE, 1998-10)
      The fractional Fourier domain multi-channel and multi-stage filtering configurations that have been recently proposed enable us to obtain either exact realizations or useful approximations of linear systems or matrix-vector ...