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Proceedings Paper

Fast DCT-based algorithm for signal and image accurate scaling
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Paper Abstract

A new DCT-based algorithm for signal and image scaling by arbitrary factor is presented. The algorithm is virtually free of boundary effects and implements the discrete sinc-interpolation, which preserves the spectral content of the signal, and therefore is free from interpolation errors. Being implemented through the fast FFT-type DCT algorithm, the scaling algorithm has computational complexity of O(log[σN]) operations per output sample, where N and [σN] are number of signal input and output samples, correspondingly.

Paper Details

Date Published: 19 February 2013
PDF: 13 pages
Proc. SPIE 8655, Image Processing: Algorithms and Systems XI, 86550W (19 February 2013); doi: 10.1117/12.2008662
Show Author Affiliations
Leonid Bilevich, Tel Aviv Univ. (Israel)
Leonid Yaroslavsky, Tel Aviv Univ. (Israel)


Published in SPIE Proceedings Vol. 8655:
Image Processing: Algorithms and Systems XI
Karen O. Egiazarian; Sos S. Agaian; Atanas P. Gotchev, Editor(s)

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