Title :
Progressive image transmission using wavelet packets
Author :
Demaistre, N. ; Labit, C.
Author_Institution :
IRISA, Rennes, France
Abstract :
Progressive image transmission (PIT) techniques using the multiresolution wavelet decomposition are extended to other wavelet packet bases. Theses techniques are based on progressive selection and progressive quantization of subbands, with fixed or varying wavelet decompositions for the successive stages of transmission. The coding parameters of these stages are optimized under rate constraints, in accordance with two different approaches: a step by step optimization, and a global optimization for the whole transmission. Extending PIT techniques from multiresolution decomposition to other wavelet packet bases brings improvements in the successive qualities of reconstruction of an image
Keywords :
image coding; image reconstruction; optimisation; quantisation (signal); transform coding; visual communication; wavelet transforms; PIT techniques; coding parameters; global optimization; image reconstruction; multiresolution wavelet decomposition; progressive image transmission; rate constraints; step by step optimization; subbands; wavelet packets; Constraint optimization; Distortion measurement; Image coding; Image communication; Image reconstruction; Image resolution; Quantization; Signal resolution; Wavelet packets; Wavelet transforms;
Conference_Titel :
Image Processing, 1996. Proceedings., International Conference on
Conference_Location :
Lausanne
Print_ISBN :
0-7803-3259-8
DOI :
10.1109/ICIP.1996.559658
