Title :
Improvements to 3D-Tarp Coding for the Compression of Hyperspectral Imagery
Author :
Zhang, Jing ; Fowler, James E. ; Du, Qian ; Liu, Guizhong
Author_Institution :
Sch. of Electron. & Inf. Eng., Xi´´an Jiaotong Univ., Xi´´an
Abstract :
In this paper, we propose several improvements to the 3D-tarp coder for the lossy compression of hyperspectral imagery. Specific ameliorations include use of principal component analysis instead of a wavelet transform for spectral decorrelation, use of the quincunx wavelet transform instead of the traditional dyadic decomposition in the spatial direction, and spectral partitioning with skipping of insignificant zeros. Experimental results reveal that the enhanced coder achieves improved rate-distortion performance.
Keywords :
data compression; encoding; geophysical signal processing; geophysical techniques; principal component analysis; remote sensing; wavelet transforms; 3D tarp coding; hyperspectral imagery; lossy compression; principal component analysis; quincunx wavelet transform; rate distortion performance; spectral decorrelation; spectral partitioning; Arithmetic; Decorrelation; Discrete wavelet transforms; Filtering; Filters; Hyperspectral imaging; Image coding; Principal component analysis; Wavelet analysis; Wavelet transforms; 3D tarp; PCA; QWT; hyperspectral compression;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2008. IGARSS 2008. IEEE International
Conference_Location :
Boston, MA
Print_ISBN :
978-1-4244-2807-6
Electronic_ISBN :
978-1-4244-2808-3
DOI :
10.1109/IGARSS.2008.4779161
