Scaled discrete cosine transform algorithms for JPEG and MPEG implementations on fused multiply/add architectures

Ephraim Feig; Elliot Linzer

doi:10.1117/12.45403

1 June 1991 Scaled discrete cosine transform algorithms for JPEG and MPEG implementations on fused multiply/add architectures

Ephraim Feig, Elliot Linzer

Author Affiliations +

Proceedings Volume 1452, Image Processing Algorithms and Techniques II; (1991) https://doi.org/10.1117/12.45403
Event: Electronic Imaging '91, 1991, San Jose, CA, United States

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.

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Ephraim Feig and Elliot Linzer "Scaled discrete cosine transform algorithms for JPEG and MPEG implementations on fused multiply/add architectures", Proc. SPIE 1452, Image Processing Algorithms and Techniques II, (1 June 1991); https://doi.org/10.1117/12.45403

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