A reduced Laplacian pyramid for lossless and progressive image communication

被引:39
作者
Aiazzi, B [1 ]
Alparone, L [1 ]
Baronti, S [1 ]
机构
[1] UNIV FLORENCE,DIPARTIMENTO INGN ELETTR,I-50139 FLORENCE,ITALY
关键词
lossless compression; progressive transmission; Laplacian pyramid; half-hand interpolation; reduced-difference pyramid;
D O I
10.1109/26.476090
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
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. In this letter, 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.
引用
收藏
页码:18 / 22
页数:5
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