A scalable video compression technique based on wavelet transform and MPEG coding

Author

Chang, Pao-Chi ; Lu, Ta-Te

Author_Institution

Dept. of Electr. Eng., Nat. Central Univ., Chung-Li, Taiwan

Volume

45

Issue

3

fYear

1999

fDate

8/1/1999 12:00:00 AM

Firstpage

788

Lastpage

793

Abstract

We present a scalable coding scheme based on the discrete wavelet transform (DWT) and MPEG coding for video applications. It utilizes the hierarchical pyramid structure that provides multiple resolutions. The DWT decomposes the image into several bands. In each band, a fixed-size motion compensated MPEG coder with custom-designed quantization tables and scanning direction is employed. This scheme has the advantages of reusing the widely available MPEG hardware and software as well as relieving the limitation of the image size imposed by the MPEG hardware technology. The simulation results show that the DWT-MPEG coding method improves the image quality over ordinary MPEG coding by 0.3~1.5 dB

Keywords

code standards; data compression; discrete wavelet transforms; image reconstruction; image resolution; quantisation (signal); telecommunication standards; transform coding; video codecs; video coding; DWT-MPEG coding method; MPEG codec; MPEG coding; MPEG hardware reuse; MPEG software reuse; custom-designed quantization tables; discrete wavelet transform; fixed-size motion compensated MPEG coder; hierarchical pyramid structure; image quality; image size; multiple resolutions; reconstructed video quality; scalable coding; scalable video compression; scanning direction; simulation results; video applications; Discrete wavelet transforms; Hardware; Image coding; Quantization; Signal resolution; Spatial resolution; Streaming media; Transform coding; Video compression; Wavelet transforms;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/30.793604

Filename

793604