Research Papers

Tasseled cap transformation for HJ-1A/B charge coupled device images

[+] Author Affiliations
Chenxin Chen, Ping Tang, Zhao Bian

Institute of Remote Sensing Application, Chinese Academy of Sciences, Datun Road, Chaoyang District, P.O. Box. 9718, Beijing 100101, China

J. Appl. Remote Sens. 6(1), 063575 (Sep 12, 2012). doi:10.1117/1.JRS.6.063575
History: Received December 25, 2011; Revised May 26, 2012; Accepted August 6, 2012
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Abstract.  At-satellite reflectance based tasseled cap parameters were extracted from HJ-1A/B satellite imagery, the charge coupled device (CCD) data of the Chinese environmental satellites that were launched on September 6, 2008. Sixteen scenes selected from the four sensors (HJ 1A CCD1, HJ 1A CCD2, HJ 1B CCD1, HJ 1B CCD2), respectively were used. The objectives are evaluating the consistency of the tasseled cap parameters for four sensors and proposing combined tasseled cap parameters for all four HJ-1A/B CCD. The results indicated that the direction of corresponding tasseled cap vectors of four sensors were almost the same. Then a combined at-satellite reflectance-based tasseled cap transformation was developed based on eight HJ-1A/B CCD scenes representing a variety of landscapes of China in both leaf-on and leaf-off seasons. Extraction combines the principle component transform with Gram-Schmidt Orthogonalization (GSO) process. The accurate brightness was obtained with the help of the first principal component eigenvector, and then greenness and wetness. The fourth one was obtained by the GSO. The first two dimensions (the brightness and the greenness) typically capture over 98%, and the brightness, greenness, and wetness account for over 99.9% of the total spectral variance. The fourth one occupies a very low proportion.

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© 2012 Society of Photo-Optical Instrumentation Engineers

Citation

Chenxin Chen ; Ping Tang and Zhao Bian
"Tasseled cap transformation for HJ-1A/B charge coupled device images", J. Appl. Remote Sens. 6(1), 063575 (Sep 12, 2012). ; http://dx.doi.org/10.1117/1.JRS.6.063575


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