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Proceedings Paper

Fast scaled-DCT algorithm
Author(s): Ephraim Feig
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Paper Abstract

The Discrete Cosine Transform (DCT) followed by scaling and quantiza.tion is an mlportant operation in image processing. Because of the scaling, the DCT itself need not he computed, but rather a scalar mu]tiple of the DCT might do, with appropriate compensation incorporated into the scaling. We present a fast method for computing such scaled output of the 2-dimensional DCT on 8 x 8 points. We also present a similar algorithm for the inverse scaled DCT.

Paper Details

Date Published: 1 June 1990
PDF: 12 pages
Proc. SPIE 1244, Image Processing Algorithms and Techniques, (1 June 1990); doi: 10.1117/12.19490
Show Author Affiliations
Ephraim Feig, IBM/Thomas J. Watson Research Ctr. (United States)

Published in SPIE Proceedings Vol. 1244:
Image Processing Algorithms and Techniques
Robert J. Moorhead; Keith S. Pennington, Editor(s)

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