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Proceedings Paper

Scaled discrete cosine transform algorithms for JPEG and MPEG implementations on fused multiply/add architectures
Author(s): Ephraim Feig; Elliot Linzer
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Paper Abstract

We introduce a new scaled Discrete Cosine Transform (SDCT) and inverse SDCTs optimized for architectures where a primitive arithmetic operation is a fused multiply/add. Explicit algorithms are derived for 1- dimensional inputs of 8 points and for 2-dimensional inputs of 8 X 8 points. The latter require 416 operations. When constants are programmable, descaling plus computing the inverse DCT on 8 X 8 points can be done with 417 operations.

Paper Details

Date Published: 1 June 1991
PDF: 10 pages
Proc. SPIE 1452, Image Processing Algorithms and Techniques II, (1 June 1991); doi: 10.1117/12.45403
Show Author Affiliations
Ephraim Feig, IBM/Thomas J. Watson Research Ctr. (United States)
Elliot Linzer, IBM/Thomas J. Watson Research Ctr. (United States)

Published in SPIE Proceedings Vol. 1452:
Image Processing Algorithms and Techniques II
Mehmet Reha Civanlar; Sanjit K. Mitra; Robert J. Moorhead, Editor(s)

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