Stripes Elimenation and Registration of Large Aperture Static Imaging Spectrometer Image

doi:10.11947/j.AGCS.2016.20150375

Abstract

Abstract: The images obtained by large aperture static imaging spectrometer(LASIS) are two dimensional images which contain interference information. The acquisition of the interferogram needs to pushbroom the whole field of view. The pose error of the platform can result in the error of the interferogram extraction, and then affect the accuracy of the recovered spectrum. Therefore, the image registration is the key link of the interferogram extraction. The accuracy of the existed registration methods applied to LASIS images is limited as the images are modulated by the interference stripes. In order to reduce the interference effect of the stripes in image registration, a stripe pattern is optimized in this paper to eliminate the stripes in LASIS images. Then, the frequency domain image registration method is used to realize the precise registration of LASIS image. Results show that this method eliminates the influence of interference stripes, the registration accuracy can reach up to 0.0294 pixels. Compared with the existed registration methods for LASIS, the accuracy improved 45.48% along the track direction, 52.22% in cross track direction, and image rotation accuracy improved 39.13%.

Key words: remote sensing, LASIS, registration, sub-pixel, pretreatment

CLC Number:

TP751.1

WANG Fubei, JING Juanjuan, WU Qiongshui, ZHOU Jinsong. Stripes Elimenation and Registration of Large Aperture Static Imaging Spectrometer Image[J]. Acta Geodaetica et Cartographica Sinica, 2016, 45(6): 706-712.

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