Interpolation using the discrete cosine transform

24 September 1992

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 28 (20) , 1927-1928
https://doi.org/10.1049/el:19921233

Abstract

Zooming and zero padding interpolation algorithms based on the conventional discrete cosine transform (DCT) are presented. The DCT algorithms are shown to be more accurate and outperform algorithms based on the Wang modified DCT-I which was proposed to replace the DCT for interpolation purposes.

Keywords

WANG MODIFIED DCT-I
ZERO PADDING INTERPOLATION
DISCRETE COSINE TRANSFORM
ZOOMING ALGORITHM
DCT ALGORITHMS

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