Space-frequency localized image compression
- 1 May 1994
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Image Processing
- Vol. 3 (3) , 302-307
- https://doi.org/10.1109/83.287024
Abstract
Subband and wavelet-based image compression can be viewed as frequency oriented techniques because each subimage in the decomposition is essentially a band-pass version of the original image. The authors suggest a space-frequency partition scheme to fully exploit the excellent localization properties of wavelets in both the spatial and frequency domains. Due to the relatively large number of blocks in this partition compared with traditional subband coders, the rate required for communicating the quantizer configurations must be taken into account. An iterative bit allocation algorithm is suggested that minimizes the mean square error given the overall rate for specifying the quantization configuration and for quantizing the wavelet coefficients. Images encoded using scalar quantization under this scheme show improvements in PSNR versus rate over traditional subband and wavelet-based methods.Keywords
This publication has 11 references indexed in Scilit:
- Wavelet decomposition of harmonizable random processesIEEE Transactions on Information Theory, 1993
- Optimal bit allocation via the generalized BFOS algorithmIEEE Transactions on Information Theory, 1991
- Alphabet- and entropy-constrained vector quantization of image pyramidsOptical Engineering, 1991
- Image coding using lattice vector quantization of wavelet coefficientsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1991
- Application of the Princen-Bradley filter bank to speech and image compressionIEEE Transactions on Acoustics, Speech, and Signal Processing, 1990
- Analysis/synthesis techniques for subband image codingIEEE Transactions on Acoustics, Speech, and Signal Processing, 1990
- A theory for multiresolution signal decomposition: the wavelet representationPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1989
- Orthonormal bases of compactly supported waveletsCommunications on Pure and Applied Mathematics, 1988
- Subband coding of imagesIEEE Transactions on Acoustics, Speech, and Signal Processing, 1986
- Transform picture codingProceedings of the IEEE, 1972