Fast calculation of 8×8 integer DCT in the software implementation of H.264/AVC

Author

Zargari, Farzad ; Ghorbani, S.

Author_Institution

Cyber Space Res. Inst., Iran Telecom Res. Center (ITRC), Tehran, Iran

fYear

2013

fDate

23-25 Oct. 2013

Firstpage

1

Lastpage

4

Abstract

In order to achieve higher compression performance the amendment called Fidelity Range Extension (FRExt) was added to the H.264 Advanced Video Coding (AVC) standard which uses both 4×4 and 8×8 integer discrete cosine transform (DCT) adaptively in the high profiles. This led to additional complexity of the initial version of the H.264/AVC encoder which had substantially high computational complexity. In this paper we propose a new algorithm which reduces the computational complexity for software implementation of horizontal 8×8 Integer DCT by more than 25 percent. Simulation results indicate 22 percent reduction in the computation time by using the proposed algorithm.

Keywords

computational complexity; data compression; discrete cosine transforms; video codecs; video coding; H.264 Advanced Video Coding standard; H.264/AVC encoder; H.264/AVC standard; computational complexity; fidelity range extension; integer DCT; integer discrete cosine transform; software implementation; Discrete cosine transforms; Matrix decomposition; Software; Software algorithms; Standards; Video coding; Computational complexity; H.264 standard; Integer Discrete Cosine Transform; Software implementation;

fLanguage

English

Publisher

ieee

Conference_Titel

Application of Information and Communication Technologies (AICT), 2013 7th International Conference on

Conference_Location

Baku

Print_ISBN

978-1-4673-6419-5

Type

conf

DOI

10.1109/ICAICT.2013.6722661

Filename

6722661