A Discrete Tchebichef Transform Approximation for Image and Video Coding

In this letter, we introduce a low-complexity approximation for the discrete Tchebichef transform (DTT). The proposed forward and inverse transforms are multiplication-free and require a reduced number of additions and bit-shifting operations. Numerical compression simulations demonstrate the effici...

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Bibliographic Details
Published in:IEEE signal processing letters Vol. 22; no. 8; pp. 1137 - 1141
Main Authors: Oliveira, Paulo A. M., Cintra, Renato J., Bayer, Fábio M., Kulasekera, Sunera, Madanayake, Arjuna
Format: Journal Article
Language:English
Published: IEEE 01.08.2015
Subjects:
Approximate DTT
Approximation algorithms
Approximation methods
Complexity theory
Discrete cosine transforms
fast algorithms
image and video coding
Image coding
Signal processing algorithms
ISSN:1070-9908, 1558-2361
Online Access:Get full text
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Summary:In this letter, we introduce a low-complexity approximation for the discrete Tchebichef transform (DTT). The proposed forward and inverse transforms are multiplication-free and require a reduced number of additions and bit-shifting operations. Numerical compression simulations demonstrate the efficiency of the proposed transform for image and video coding. Furthermore, Xilinx Virtex-6 FPGA based hardware realization shows 44.9% reduction in dynamic power consumption and 64.7% lower area when compared to the literature.
ISSN:1070-9908
1558-2361
DOI:10.1109/LSP.2015.2389899