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Error-free Implementation of the Discrete Cosine Transform: Algorithms and Architectures using Multidimensional Algebraic Integer Quantization - Softcover

Wahid, Khan

 
9783843376327: Error-free Implementation of the Discrete Cosine Transform: Algorithms and Architectures using Multidimensional Algebraic Integer Quantization
Softcover
ISBN 10: 3843376328 ISBN 13: 9783843376327
Verlag: LAP LAMBERT Academic Publishing, 2010

Inhaltsangabe

The advancement in multimedia-based applications has sustained the need for more efficient ways to encode signals and images. Over the years, the Discrete Cosine Transform (DCT) has emerged as the most popular transform for many image and video coding applications. While implementing the DCT using finite-precision, approximation of the real-valued transform coefficients is required. It not only results in computational error, but also limits the quality of the reconstruction. An error-free encoding using algebraic integers has been shown to be an effective way of resolving the issue. The mapping technique ? referred as Algebraic Integer Quantization (AIQ) ? encodes the irrational basis functions using algebraic integers. This research presents novel AIQ-based architectures for the fast implementation of several 8x8 2-D scaled DCT and Inverse scaled DCTs. A new Integer-like 8x8 2-D DCT for H.264 encoder is also presented. Apart from the multiplication-free nature, the presented scheme eliminates any quantization errors during the transform stage resulting in area-efficient and high-speed designs suitable for real-time image or video compression and HDTV applications.

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Über die Autorin bzw. den Autor

Khan Wahid earned his B.Sc. degree from Bangladesh Univ. of Eng. & Tech. (2000), M.Sc (2003) and Ph.D (2007) from the Univ. of Calgary. He has received the most distinguished "Killam" and the "NSERC Canada Graduate" scholarships for his doctoral research. He has authored/co-authored over 45 peer-reviewed journal and international conference papers.

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Verlag
LAP LAMBERT Academic Publishing
Erscheinungsdatum
2010
Sprache
Englisch
ISBN 10 
3843376328
ISBN 13 
9783843376327
Einband
Taschenbuch
Anzahl der Seiten
240
Kontakt zum Hersteller
Nicht verfügbar
Verantwortliche Person
info@bod.de
info@bod.de

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