A configurable IP core for inverse quantized discrete cosine and integer transforms with arbitrary accuracy

Author

Sun, Chi-Chia ; Zhang, Ce ; Goetze, Juergen

Author_Institution

Inf. Process. Lab., Dortmund Univ. of Technol., Dortmund, Germany

fYear

2010

fDate

6-9 Dec. 2010

Firstpage

915

Lastpage

918

Abstract

An extended version of low-complexity IP Core for image/video transformations based on the CORDIC architecture is presented. This IP core is able to perform quantized 8×8 IDCT and quantized 8×8/4×4 H.264-inverse integer transforms on a configurable architecture by using only shift and add operations. Furthermore, the number for CORDIC iterations and compensation steps can be adjusted, which enables a trade-off between video compression quality in PSNR and computational complexity.

Keywords

data compression; discrete cosine transforms; inverse transforms; video coding; CORDIC iterations; add operation; computational complexity; configurable IP core; configurable architecture; image-video transformations; integer transforms; inverse quantized discrete cosine; quantized H.264-inverse integer transforms; shift operation; video compression quality; Bit rate; Computer architecture; Discrete cosine transforms; IP networks; PSNR; Transform coding; CORDIC; DCT; FPGA; H.264; ICT; MPEG-4; Quantization; Reconfigurable;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (APCCAS), 2010 IEEE Asia Pacific Conference on

Conference_Location

Kuala Lumpur

Print_ISBN

978-1-4244-7454-7

Type

conf

DOI

10.1109/APCCAS.2010.5774865

Filename

5774865