An Improved EZW Hyperspectral Image Compression

The paper describes an efficient lossy and lossless three dimensional (3D) image compression of hyperspectral images. The method adopts the 3D spatial-spectral hybrid transform and the proposed transform-based coder. The hybrid transforms are that Karhunen-Loeve Transform (KLT) which decorrelates spectral data of a hyperspectral image, and the integer Discrete Wavelet Transform (DWT) which is applied to the spatial data and produces decorrelated wavelet coefficients. Our simpler transform-based coder is inspired by Shapiro’s EZW algorithm, but encodes residual values and only implements dominant pass incorporating six symbols. The proposed method will be examined on AVIRIS images and evaluated using compression ratio for both lossless and lossy compression, and signal to noise ratio (SNR) for lossy compression. Experimental results show that the proposed image compression not only is more efficient but also has better compression ratio.

[1]  Pierre Duhamel,et al.  Hyperspectral Image Compression: Adapting SPIHT and EZW to Anisotropic 3-D Wavelet Coding , 2008, IEEE Transactions on Image Processing.

[2]  William A. Pearlman,et al.  Quantifying the Coding Performance of Zerotrees of Wavelet Coefficients: Degree-$k$ Zerotree , 2007, IEEE Transactions on Signal Processing.

[3]  S. Macenka,et al.  Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) , 1988 .

[4]  Zixiang Xiong,et al.  Low bit-rate scalable video coding with 3-D set partitioning in hierarchical trees (3-D SPIHT) , 2000, IEEE Trans. Circuits Syst. Video Technol..

[5]  Enrico Magli,et al.  Transform Coding Techniques for Lossy Hyperspectral Data Compression , 2007, IEEE Transactions on Geoscience and Remote Sensing.

[6]  I. Daubechies,et al.  Factoring wavelet transforms into lifting steps , 1998 .

[7]  William A. Pearlman,et al.  3D set partitioning coding methods in hyperspectral image compression , 2003, Proceedings 2003 International Conference on Image Processing (Cat. No.03CH37429).

[8]  Pengwei Hao,et al.  Matrix factorizations for reversible integer mapping , 2001, IEEE Trans. Signal Process..

[9]  Guizhong Liu,et al.  Efficient compression algorithm for hyperspectral images based on correlation coefficients adaptive 3D zerotree coding , 2008 .

[10]  Jerome M. Shapiro,et al.  Embedded image coding using zerotrees of wavelet coefficients , 1993, IEEE Trans. Signal Process..

[11]  M W Marcellin,et al.  Three-dimensional image compression with integer wavelet transforms. , 2000, Applied optics.

[12]  Lindsay I. Smith,et al.  A tutorial on Principal Components Analysis , 2002 .

[13]  Guizhong Liu,et al.  Lossy-to-Lossless Compression of Hyperspectral Image Using the Improved AT-3D SPIHT Algorithm , 2008, 2008 International Conference on Computer Science and Software Engineering.

[14]  Kwanghoon Sohn,et al.  Compression for hyperspectral images using three dimensional wavelet transform , 2001, IGARSS 2001. Scanning the Present and Resolving the Future. Proceedings. IEEE 2001 International Geoscience and Remote Sensing Symposium (Cat. No.01CH37217).

[15]  López del Val Ja,et al.  Principal components analysis , 1993 .