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Spectral method for enlarging fragments of digital images
S.N. Khonina, V.G. Baranov1, V.V. Kotlyar
Image Processing Systems Institute of RAS
1Samara State Aerospace University

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Pages: 165-173.

Full text of article: Russian language.

Abstract:
The paper considers the possibility of scaling the fragments of digital images for more detailed viewing by a method similar to optical zoom in video cameras. This method is based on extrapolating the optical spectrum of the image and adding a weight function to partially compensate for the Gibbs effect. The advantage of this method is that fine details of the image are enlarged without blurring, with clear shape retention. This differs this method significantly from the scaling by the bilinear interpolation technique. The paper presents the numerical results of comparing the proposed method with those implemented in the Alchemy software.

Citation:
Khonina SN, Baranov VG, Kotlyar VV. Spectral method for enlarging fragments of digital images. Computer Optics 1999; 19: 165 - 173.

References:
  1. Yaroslavsky LP. An introduction to digital picture processing; Moscow: Sov. Radio Publisher; 1979; 312.
  2. Pavlidis T. Algorithms for graphics and image processing. Moscow: Radio i Svyaz Publisher; 1986: 400.
  3. Paley RE, Wiener N. Fourier transforms in the complex domain. Moscow: Nauka Publisher; 1964: 267.
  4. Vasilenko GI, Taratorin AM. Restoration of images. Moscow: Radio i Svyaz Publisher; 1986: 304.
  5. D. Slepian, H.O. Pollak, Prolate spheroidal wave functions. Fourier Analysis and Uncertainty – I, The Bell System Technical Journal, 1961, v. 40, p.43-46.
  6. Youla D. C. Image restoration by the method of convex projections. PI. Theory. – IEEE Trans., 1982, v. MI-I, No 2, p. 81-95.
  7. Goodman JW. Statistical optics. Moscow: Mir Publisher; 1988.
  8. Soifer V.A., Kotlyar V.V., Doskolovich L.L. Iterative methods for diffractive optical elements computation. London: Taylor& Francis, 1997.
  9. Ignatyev NK. Stroboscopic phenomena in film and television. Teknika Kino i Televideniya; 1957; 8: 21.
  10. Vlasenko VA, Lappa YM, Yaroslavsky LP. Methods of synthesis of fast algorithms for signal convolution and spectral analysis; Moscow: Nauka Publisher; 1990; 160.

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