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Optimized Architecture Using a Novel Subexpression Elimination on Loeffler Algorithm for DCT-Based Image Compression
Joint Authors
Jridi, Maher
Alfalou, Ayman
Meher, Pramod Kumar
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-05-30
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Engineering Sciences and Information Technology
Abstract EN
The canonical signed digit (CSD) representation of constant coefficients is a unique signed data representation containing the fewest number of nonzero bits.
Consequently, for constant multipliers, the number of additions and subtractions is minimized by CSD representation of constant coefficients.
This technique is mainly used for finite impulse response (FIR) filter by reducing the number of partial products.
In this paper, we use CSD with a novel common subexpression elimination (CSE) scheme on the optimal Loeffler algorithm for the computation of discrete cosine transform (DCT).
To meet the challenges of low-power and high-speed processing, we present an optimized image compression scheme based on two-dimensional DCT.
Finally, a novel and a simple reconfigurable quantization method combined with DCT computation is presented to effectively save the computational complexity.
We present here a new DCT architecture based on the proposed technique.
From the experimental results obtained from the FPGA prototype we find that the proposed design has several advantages in terms of power reduction, speed performance, and saving of silicon area along with PSNR improvement over the existing designs as well as the Xilinx core.
American Psychological Association (APA)
Jridi, Maher& Alfalou, Ayman& Meher, Pramod Kumar. 2012. Optimized Architecture Using a Novel Subexpression Elimination on Loeffler Algorithm for DCT-Based Image Compression. VLSI Design،Vol. 2012, no. 2012, pp.1-12.
https://search.emarefa.net/detail/BIM-454716
Modern Language Association (MLA)
Jridi, Maher…[et al.]. Optimized Architecture Using a Novel Subexpression Elimination on Loeffler Algorithm for DCT-Based Image Compression. VLSI Design No. 2012 (2012), pp.1-12.
https://search.emarefa.net/detail/BIM-454716
American Medical Association (AMA)
Jridi, Maher& Alfalou, Ayman& Meher, Pramod Kumar. Optimized Architecture Using a Novel Subexpression Elimination on Loeffler Algorithm for DCT-Based Image Compression. VLSI Design. 2012. Vol. 2012, no. 2012, pp.1-12.
https://search.emarefa.net/detail/BIM-454716
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-454716