Assessment of the information quality of hyperspectral data from interference imaging spectrometer Assessment of the information quality of hyperspectral data from interference imaging spectrometer

• Published in: Hong wai yu hao mi bo xue bao Vol. 31; no. 2; pp. 143 - 147
• Main Authors: ZHANG, Xia, SHUAI, Tong, ZHAO, Dong
• Format: Journal Article
• Language: English; Chinese
• Published: 01.04.2012
• Subjects: Assessments; Bands; Imaging spectrometers; Infrared; Noise; Reflectivity; Signal to noise ratio; Valleys
• ISSN: 1001-9014
• DOI: 10.3724/SP.J.1010.2012.00143

The information quality of the IIM hyperspectral data has been assessed from the aspects of signal-to-noise ratio and comentropy for the further applications of the IIM data. As the assessment results show, the information of the IIM data has a good quality as a whole. The quality of the information at the middle bands are much better than that at both ends of the bands. Corresponding to reflectance of plagioclase and the pyroxene, the peak in the spectrum centered around 750 nm exhibits high value of SNR and comentropy. This result is of great importance for retrieving elements and minerals on the lunar surface. However, the absorption valley, centered around 930 nm, exhibits poor information quality. Although the information quality of the first nine bands has an obvious trend of rising, the noise should be reduced carefully before use because of the low quality of them as a whole. Moreover, the information quality of the first band and the last one is too poor to use.