Title :
Performance evaluation of JPEG 2000-like data decomposition schemes in wavelet codec
Author :
Przelaskowski, Artur
Author_Institution :
Inst. of Radioelectron., Warsaw Univ. of Technol., Poland
fDate :
6/23/1905 12:00:00 AM
Abstract :
This paper deals with image data decomposition schemes applied in a wavelet coder according to the JPEG 2000 standard. The 2D subband decomposition and 1D reversible transformation are considered and optimized. Two wavelet codec realizations are applied: slightly modified SPIHT and verification model VM8.6 of JPEG 2000. Selected reversible transforms are evaluated and new effective ones are proposed. Additionally, new subband decomposition methods are tested in a context of standard schemes. Optimized wavelet data decomposition in a wavelet coder can increase an effectiveness of the basic mallat-5/3 transform algorithm even up to 1.5 dB of PSNR in lossy compression and up to 3% of bit rate in lossless compression
Keywords :
data compression; image coding; transform coding; wavelet transforms; 1D reversible transformation; 2D subband decomposition; JPEG 2000 standard; PSNR; SPIHT; bit rate; image data decomposition; lossless compression; lossy compression; verification model VM8.6; wavelet codec; wavelet coder; Bit rate; Codecs; Encoding; Filter bank; Frequency; Image coding; Spatial resolution; Streaming media; Transform coding; Wavelet transforms;
Conference_Titel :
Image Processing, 2001. Proceedings. 2001 International Conference on
Conference_Location :
Thessaloniki
Print_ISBN :
0-7803-6725-1
DOI :
10.1109/ICIP.2001.958238
