Title :
A scalable architecture for MPEG-4 embedded zero tree coding
Author :
Vanhoof, Bart ; Péon, Mercedes ; Lafruit, Gauthier ; Bormans, Jan ; Engels, Marc ; Bolsens, Ivo
Author_Institution :
IMEC, Heverlee, Belgium
Abstract :
Wavelet-based image compression has been adopted in emerging standards such as MPEG-4 and JPEG2000. An embedded zero tree (EZT) coding scheme enables the compression and the quantization of the wavelet coefficients. This paper presents the OZONE chip, a dedicated hardware solution for an EZT coding coprocessor. Realized in a 0.5 μm CMOS technology, the OZONE performs visual-lossless compression of more than 30 CIF images per second. Due to its new scalable architecture, parallel operation of multiple OZONEs is supported
Keywords :
CMOS digital integrated circuits; coprocessors; data compression; image coding; parallel architectures; tree codes; wavelet transforms; 0.5 micron; CIF images; CMOS technology; EZT coding coprocessor; MPEG-4; OZONE chip; dedicated hardware solution; embedded zero tree coding; parallel operation; scalable architecture; visual-lossless compression; wavelet coefficients; wavelet-based image compression; CMOS technology; Coprocessors; Filtering; Hardware; Image coding; MPEG 4 Standard; Merging; Quantization; Transform coding; Wavelet coefficients;
Conference_Titel :
Custom Integrated Circuits, 1999. Proceedings of the IEEE 1999
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-5443-5
DOI :
10.1109/CICC.1999.777244
