A configurable IP Core for arbitrary inverse quantized transforms with dynamic video resolutions

Author

Chi-Chia Sun ; Chun-Ying Lin ; Gene-Eu Jan

Author_Institution

Dept. of Electr. Eng., Nat. Formosa Univ., Yunlin, Taiwan

fYear

2012

fDate

4-7 Nov. 2012

Firstpage

640

Lastpage

643

Abstract

In this paper, a low-complexity IP Core based on the CORDIC algorithm is proposed for image/video decoding process in compatibility with the standard MPEG-4 Visual and the standard H.264/AVC. This, Inverse Discrete Cosine and Integer Transform (IDCIT), can be used to support multiplierless 1-D 8-point IDCT and 1-D 4-point/8-point inverse integer transforms. Meanwhile, the number for CORDIC iterations and compensation steps are adjustable in order to compensate the video compression quality. The implementations are embedded in public available software XVID Codes 1.2.2 for the standard MPEG-4 Visual and the H.264/AVC reference software JM 16.1, where the experimental results show that a trade-off between video compression quality in PSNR and computational complexity is obtained.

Keywords

computational complexity; data compression; digital arithmetic; discrete cosine transforms; image resolution; inverse transforms; quantisation (signal); video codecs; video coding; CORDIC algorithm; H.264/AVC; JM 16.1; MPEG-4; XVID codes 1.2.2; arbitrary inverse quantized transform; computational complexity; configurable IP core; dynamic video resolution; image decoding process; inverse discrete cosine transform; inverse integer transform; low-complexity IP core; video compression quality; video decoding process; Computer architecture; Discrete cosine transforms; PSNR; Standards; Transform coding; CORDIC; DCIT; DCT; ICT; MPEG-4 and H.264; Quantization;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Signal Processing and Communications Systems (ISPACS), 2012 International Symposium on

Conference_Location

New Taipei

Print_ISBN

978-1-4673-5083-9

Electronic_ISBN

978-1-4673-5081-5

Type

conf

DOI

10.1109/ISPACS.2012.6473568

Filename

6473568