Publication Details
Towards Low Power Approximate DCT Architecture for HEVC Standard
VAŠÍČEK Zdeněk, MRÁZEK Vojtěch and SEKANINA Lukáš. Towards Low Power Approximate DCT Architecture for HEVC Standard. In: Proc. of the 2017 Design, Automation & Test in Europe Conference & Exhibition (DATE). Lausanne: European Design and Automation Association, 2017, pp. 1576-1581. ISBN 978-3-9815370-9-3.
Czech title
Návrh nízkopříkonové DCT architektury pro standard HEVC
Type
conference paper
Language
english
Authors
Vašíček Zdeněk, doc. Ing., Ph.D. (DCSY FIT BUT)
Mrázek Vojtěch, Ing., Ph.D. (DCSY FIT BUT)
Sekanina Lukáš, prof. Ing., Ph.D. (DCSY FIT BUT)
Mrázek Vojtěch, Ing., Ph.D. (DCSY FIT BUT)
Sekanina Lukáš, prof. Ing., Ph.D. (DCSY FIT BUT)
Keywords
Genetic programming, relaxed equivalence, approximate computing, HEVC, DCT
Abstract
Video processing performed directly on IoT nodes
is one of the most performance as well as energy demanding
applications for current IoT technology. In order to support realtime
high-definition video, energy-reduction optimizations have
to be introduced at all levels of the video processing chain. This
paper deals with an efficient implementation of Discrete Cosine
Transform (DCT) blocks employed in video compression based
on the High Efficiency Video Coding (HEVC) standard. The proposed multiplierless 4-input DCT implementations contain approximate adders and subtractors that were obtained using
genetic programming. In order to manage the complexity of
evolutionary approximation and provide formal guarantees in
terms of errors of key circuit components, the worst and average
errors were determined exactly by means of Binary decision
diagrams. Under conditions of our experiments, approximate 4-
input DCTs show better quality/power trade-offs than relevant
implementations available in the literature. For example, 25%
power reduction for the same error was obtained in comparison
with a recent highly optimised implementation.
Published
2017
Pages
1576-1581
Proceedings
Proc. of the 2017 Design, Automation & Test in Europe Conference & Exhibition (DATE)
Conference
Design, Automation and Test in Europe Conference, Lausanne, CH
ISBN
978-3-9815370-9-3
Publisher
European Design and Automation Association
Place
Lausanne, CH
DOI
BibTeX
@INPROCEEDINGS{FITPUB11299, author = "Zden\v{e}k Va\v{s}\'{i}\v{c}ek and Vojt\v{e}ch Mr\'{a}zek and Luk\'{a}\v{s} Sekanina", title = "Towards Low Power Approximate DCT Architecture for HEVC Standard", pages = "1576--1581", booktitle = "Proc. of the 2017 Design, Automation \& Test in Europe Conference \& Exhibition (DATE)", year = 2017, location = "Lausanne, CH", publisher = "European Design and Automation Association", ISBN = "978-3-9815370-9-3", doi = "10.23919/DATE.2017.7927241", language = "english", url = "https://www.fit.vut.cz/research/publication/11299" }
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