This paper addresses the problem of lossy compression for hyperspectral images and presents an efficient compression algorithm based on FastICA. Firstly, an efficient algorithm for segmentation of hyperspectral images...
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ISBN:
(纸本)9781479958368
This paper addresses the problem of lossy compression for hyperspectral images and presents an efficient compression algorithm based on FastICA. Firstly, an efficient algorithm for segmentation of hyperspectral images is proposed. Secondly, based on the targets, a lossy compression based on ROI (Region of Interest) is proposed for hyperspectral compression, which employs KLT (Karhunen-Loeve transform) to remove the spectral correlation and DWT (Discrete Wavelet Transform) to remove the spatial correlation. Moreover, scaled-based shift algorithm is used to shift the wavelet coefficients of the interested targets;Finally, spiht (Set Partitioned In Hierarchical Tree) algorithm is used to compress each band. Experimental results show that the proposed algorithm can efficiently protect the target information of hyperspectral images even if at low bitrates.
Wavelet image compression is one of the most effective methods of image compression at *** chosen wavelet directly affects the efficiency of coding and the quality of the reconstrueted image at still image compression...
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Wavelet image compression is one of the most effective methods of image compression at *** chosen wavelet directly affects the efficiency of coding and the quality of the reconstrueted image at still image compression,because the property parameters of different wavelet are varied,so it is significance to research the correlation between the wavelet properties and image *** this article,we chose usually four types wavelet bases,experimented with classical Set Partitioning in Hierarchical Trees algorithm,research and analyze the correlation between wavelet properties of orthogonality,symmetry,regularity,vanishing moment,compactly supported and image compression in terms of *** results of experiment indicate some wavelet with better performance,***6.8,and appropriate value of the vanishing moment about 7 in image compression.
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