Title :
An image coding using overlapped wavelet transform with permutation scan
Author :
Hur, Tae Won ; Kim, Jeong Woo ; Kim, E. Sung ; Choi, Joong Han ; Lee, Keun Young
Author_Institution :
Dept. of Electron. Eng., Sung Kyun Kwan Univ., Suwon, South Korea
Abstract :
In this paper, an overlapped wavelet transform (OWT) with permutation scan is presented. This transform is compared to DCT, constructed from PR-QMF-filter banks and Haar basis. Also permutation scanning achieves compression through efficiently representing the positional information caused by ordering the data information. A block OWT-based permutation coding algorithm (OWTPC) is developed and compared to JPEG. This mutually beneficial characteristics reduces the coding bit-rate. Simulation results are obtained for standard image, showing improvement of 0.2-0.3 dB compared to JPEG in the peak-SNR index
Keywords :
block codes; data compression; image coding; wavelet transforms; Haar basis; PR-QMF-filter bank; block OWT permutation coding algorithm; compression; data information; image coding; overlapped wavelet transform; permutation scan; positional information; Bandwidth; Discrete cosine transforms; Discrete wavelet transforms; Frequency domain analysis; Geometry; Image coding; Low pass filters; Signal resolution; Transform coding; Wavelet transforms;
Conference_Titel :
Circuits and Systems, 1996., IEEE Asia Pacific Conference on
Conference_Location :
Seoul
Print_ISBN :
0-7803-3702-6
DOI :
10.1109/APCAS.1996.569207
