the data size of hyperspectral image is too large for storage or transmission
so it is necessary to compress hyperspectral image efficiently. In this paper
3D SPIHT is applied to hyperspectral image compression. Firstly
band grouping is performed to obtain the processing unit
and then the three dimensional wavelet transform is applied to each group to eliminate both spatial and spectral redundancy. Finally
3D SPIHT algorithm is used to encode the wavelet coefficients. Both integer and float wavelet are used for lossless and lossy compression respectively. Experimental results show that the proposed algorithm has better lossy coding performance
while lower lossless coding performance than predictive coding technique.