Chinese Optics Letters, 2004, 2 (6): 06325, Published Online: Jun. 6, 2006
Multispectral image compression using three-dimensional transform zeroblock coding Download: 535次
Abstract
This paper proposes a new multispectral image data compression algorithm (KLT/WT-3DEZB). The proposed coding strategy consists of three main steps. Firstly, a wavelet transform (WT) is applied to reduce the spatial redundancies. Then, a Karhunen-Loeve transform (KLT) is used to reduce the redundancies in the spectral domain. Finally, a modified SPECK algorithm---three-dimensional embedded zeroblock (3DEZB) algorithm is proposed and used to encode the transformed coefficients. Numerical experiments show that the reconstructed images using the proposed algorithm exhibite a better quality and a higher compression ratio than those obtained by traditional KLT/WT-3DSPIHT, 3DSPIHT, and 3DSPECK algorithms.
Jiaji Wu, Chengke Wu. Multispectral image compression using three-dimensional transform zeroblock coding[J]. Chinese Optics Letters, 2004, 2(6): 06325.