Title :
A reduced Laplacian pyramid for lossless and progressive image communication
Author :
Aiazzi, Bruno ; Alparone, Luciano ; Baronti, Stefano
Author_Institution :
CNR, Florence, Italy
fDate :
1/1/1996 12:00:00 AM
Abstract :
The Laplacian pyramid (LP) is appropriate for lossy image compression; conversely, the reduced-difference pyramid (RDP), having as many data as pixels, gives a better performance with lossless encoding. A reduced LP is designed by discarding the anti-aliasing filter and adopting a half-band interpolator, thus retaining three over four of the LP coefficients. Lossless coding outperforms both LP and RDP, especially when dealing with medical images
Keywords :
data compression; image coding; interpolation; medical image processing; visual communication; Laplacian pyramid coefficients; half-band interpolator; lossless encoding; lossless image communication; lossy image compression; medical images; progressive image communication; reduced Laplacian pyramid; reduced-difference pyramid; Biomedical imaging; Councils; Filters; Image coding; Image communication; Image converters; Laplace equations; Performance loss; Pixel; Pulse modulation;
Journal_Title :
Communications, IEEE Transactions on
