Performance analysis of an H.263 video encoder for VIRAM

Author

Nguyen, Thinh PQ ; Zakhor, Avideh ; Yelick, Katherine

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., California Univ., Berkeley, CA, USA

Volume

3

fYear

2000

fDate

2000

Firstpage

98

Abstract

VIRAM (vector intelligent random access memory) is a vector architecture processor with embedded memory, designed for portable multimedia processing devices. Its vector processing capability results in high performance multimedia processing, while embedded DRAM technology provides high memory bandwidth with low energy consumption. We evaluate and compare the performance of VIRAM to digital signal processors (DSPs) and conventional SIMD (single instruction multiple data) media extensions in the context of video coding. In particular, we examine motion estimation (ME) and the discrete cosine transform (DCT) which have been shown to dominate typical video encoders such as H.263. We show that VIRAM outperforms other architectures by 4.6× to 8.7× in computing ME and by 1.2× to 5.0× in computing DCT

Keywords

DRAM chips; code standards; data compression; discrete cosine transforms; microprocessor chips; motion estimation; multimedia systems; parallel architectures; telecommunication standards; transform coding; vector processor systems; video coding; DCT; DSP; H.263 video encoder; SIMD media extensions; VIRAM; digital signal processors; discrete cosine transform; embedded DRAM technology; embedded memory; high memory bandwidth; low energy consumption; motion estimation; performance analysis; portable multimedia processing devices; single instruction multiple data; vector architecture processor; vector intelligent random access memory; vector microprocessor; video coding; Bandwidth; Computer architecture; Digital signal processing; Digital signal processors; Discrete cosine transforms; Energy consumption; Motion estimation; Performance analysis; Random access memory; Video coding;

fLanguage

English

Publisher

ieee

Conference_Titel

Image Processing, 2000. Proceedings. 2000 International Conference on

Conference_Location

Vancouver, BC

ISSN

1522-4880

Print_ISBN

0-7803-6297-7

Type

conf

DOI

10.1109/ICIP.2000.899304

Filename

899304