1 June 1990 Fast scaled-DCT algorithm
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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.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ephraim Feig, Ephraim Feig, } "Fast scaled-DCT algorithm", Proc. SPIE 1244, Image Processing Algorithms and Techniques, (1 June 1990); doi: 10.1117/12.19490; https://doi.org/10.1117/12.19490
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