Title :
Fast cosine Gabor transform and its application to image compression
Author :
Turcza, Pawel ; Zielinski, Tomasz P.
Author_Institution :
Dept. of Instrum. & Meas., Univ. of Min. & Metall., Cracow, Poland
Abstract :
Fast DCT-IV implementation of previously presented novel discrete critically-sampled real Gabor transform is proposed in the paper and some aspects of its application to image compression are discussed including the choice of window functions and quantization schemes. Direct links between the new cosine Gabor transform and cosine modulated filter banks as well as cosine modulated lapped transforms are given
Keywords :
channel bank filters; data compression; discrete cosine transforms; filtering theory; image coding; image representation; modulation; quantisation (signal); time-frequency analysis; transform coding; wavelet transforms; cosine modulated filter banks; cosine modulated lapped transforms; discrete critically-sampled real Gabor transform; fast DCT-IV implementation; fast cosine Gabor transform; image compression; quantization; time-varying representation; wavelets; window functions; Algorithm design and analysis; Discrete transforms; Discrete wavelet transforms; Filter bank; Fourier transforms; Frequency; Image coding; Quantization; Signal analysis; Signal synthesis;
Conference_Titel :
Time-Frequency and Time-Scale Analysis, 1998. Proceedings of the IEEE-SP International Symposium on
Conference_Location :
Pittsburgh, PA
Print_ISBN :
0-7803-5073-1
DOI :
10.1109/TFSA.1998.721461
