Adaptive interference hyperspectral image compression with spectrum distortion control
Chinese Optics Letters, Vol. 7, Issue 10, pp. 934-937
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- OCIS Codes:
- (070.4790) Fourier optics and signal processing : Spectrum analysis
- (100.2960) Image processing : Image analysis
- (100.4145) Image processing : Motion, hyperspectral image processing
Citation
Jing Ma, Yunsong Li, Chengke Wu, and Dong Chen, "Adaptive interference hyperspectral image compression with spectrum distortion control," Chin. Opt. Lett. 7, 934-937 (2009)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-7-10-934
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As one of the next generation imaging spectrometers, interferential spectrometer has been paid much attention. With traditional spectrum compression methods, the hyperspectral images generated by interferential spectrometer can only be protected with better visual quality in spatial domain, but its optical applications in Fourier domain are often ignored. So the relation between the distortion in Fourier domain and the compression in spatial domain is analyzed in this letter. Based on this analysis, a novel coding scheme is proposed, which can compress data in spatial domain while reducing the distortion in Fourier domain. The bitstream of set partitioning in hierarchical trees (SPIHT) is truncated by adaptively lifting the rate-distortion slopes of zerotrees according to the priorities of optical path difference (OPD) based on rate-distortion optimization theory. Experimental results show that the proposed scheme can achieve better performance in Fourier domain while maintaining the image quality in spatial domain.
© 2009 Chinese Optics Letters
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Xidian University
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