Classified coset coding based lossless compression of hyperspectral images
2011
Due to the restrained resources on board, compression methods with low complexity are desirable for hyperspectral
images. A low-complexity scalar coset coding based distributed compression method (s-DSC) has been proposed for
hyperspectral images. However there still exists much redundancy since the bitrate of the block to be encoded is
determined by its maximum prediction error. In this paper, a classified coset coding based lossless compression method
is proposed to further reduce the bitrate. The current block is classified to make the pixels with similar spectral
correlation cluster together. Then each class of pixels is coset coded respectively. The experimental results show that the
classification could reduce the bitrate efficiently.
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