A Theory for Multiresolution Signal Decomposition: The Wavelet Representation
IEEE Transactions on Pattern Analysis and Machine Intelligence
Text compression
A programming environment for the design of complex high speed ASICs
DAC '98 Proceedings of the 35th annual Design Automation Conference
Implementation of a scalable MPEG-4 wavelet-based visual texture compression system
Proceedings of the 36th annual ACM/IEEE Design Automation Conference
Custom Memory Management Methodology: Exploration of Memory Organisation for Embedded Multimedia System Design
JPEG Still Image Data Compression Standard
JPEG Still Image Data Compression Standard
A fast technique for identifying zerotrees in the EZW algorithm
ICASSP '96 Proceedings of the Acoustics, Speech, and Signal Processing, 1996. on Conference Proceedings., 1996 IEEE International Conference - Volume 03
Integrated Computer-Aided Engineering
Optimal memory organization for scalable texture codecs in MPEG-4
IEEE Transactions on Circuits and Systems for Video Technology
High Speed 4-Symbol Arithmetic Encoder Architecture for Embedded Zero Tree-Based Compression
Journal of VLSI Signal Processing Systems
VLSI architecture of arithmetic coder used in SPIHT
IEEE Transactions on Very Large Scale Integration (VLSI) Systems
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Wavelet-based image compression has been adopted in MPEG-4for visual texture coding. All wavelet quantization schemes inMPEG-4—Single Quantization (SQ), Multiple Quantization (MQ) andBi-level Quantization—use Embedded Zero Tree (EZT) coding followedby an adaptive arithmetic coder for the compression and quantizationof a wavelet image. This paper presents the OZONE chip, a dedicatedhardware coprocessor for EZT and arithmetic coding. Realized in a 0.5μm CMOS technology and operating at 32 MHz, the EZT coder iscapable of processing up to 25.6 Mega pixel-bitplanes per second. This is equivalent to the lossless compression of 31.6 8-bitgrayscale CIF images (352 × 288) per second. The adaptivearithmetic coder processes up to 10 Mbit per second. The combinationof the performance of the EZT coder and the arithmetic coder allowsthe OZONE to perform visual-lossless compression of more than 30 CIFimages per second. Due to its novel and scalable architecture,parallel operation of multiple OZONEs is supported. The OZONEfunctionality is demonstrated on a PC-based compressionsystem.