Lossless hyper-spectral image compression algorithm based on mixing transform of SHIRCT,subtraction and CDF(2,2) DWT
Taihui Liu · Journal of Jilin University · 2008
Integer reversible color transform(SHIRCT) and subtraction mixing transform to eliminate spectral redundancy was presented,meanwhile 2D-CDF(2,2)DWT was used to eliminate spatial redundancy.This transform can be fully implemented by add and shift operations,therefore it is convenient for hardware realization.Its redundancy elimination effect is better than that of(1D+2D)CDF(2,2)DWT.An improved EBCOT algorithm was applied for compression coding.Experiments show that in lossless image compression application the effect of the proposed method is slightly better than the effect acquired using(1D+2D)CDF(2,2)DWT and improved EBCOT algorithm.It is much better than JPEG-LS,WinZip,ARJ,DPCM,NMST and MST,and the method in the literature[1].