Title :
Fractal image coding using cosine-modulated filter banks
Author :
Gao, Xiqi ; Hong, Bo ; Luo, Lijun ; He, Zhenya
Author_Institution :
Dept. of Radio Eng., Southeast Univ., Nanjing, China
fDate :
2/1/1997 12:00:00 AM
Abstract :
Cosine-modulated filter banks are introduced into fractal image coding to remove the block effects which exist in conventional block-based fractal image compression both in spatial and frequency domains. The proposed method offers not only an efficient solution to such block effects but also better objective performance. Compared with the fractal image compression methods based on discrete cosine transform, about 1 dB SNR gain can be achieved
Keywords :
band-pass filters; filtering theory; fractals; image coding; modulation; transform coding; transforms; SNR gain; block based fractal image compression; block effects removal; cosine-modulated filter banks; fractal image coding; frequency domain; objective performance; spatial domain; Channel bank filters; Discrete cosine transforms; Equations; Filter bank; Finite impulse response filter; Fractals; Frequency domain analysis; Image coding; Image reconstruction; Signal synthesis;
Journal_Title :
Consumer Electronics, IEEE Transactions on
