Title :
Interpolation using the discrete cosine transform
Author_Institution :
La Trobe Univ., Bundoora, Vic., Australia
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 :
Fourier transforms; interpolation; signal processing; DCT algorithms; Wang modified DCT-I; discrete cosine transform; zero padding interpolation; zooming algorithm;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19921233
