陸域観測衛星ALOS光学センサのバンド間ミスレジストレーション

概要

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A single scene aquired by optical sensor on Japanese land observing satellite ALOS was utilizedAbstract -for assessing band-to-band misregistration. The AVNIR-2 sensor has 4 spectral bands in the range of visible andnear infrared band. The data utilized is raw optical data at level 1A correction which means no geometrical andoptical correction had been done. The scene for evaluation covers Tokyo and its vicinity area. At first, visualexamination for each band data as a monocrome image on a digital display was performed. No significantgeometric imperfections were observed. Pseudocolor display using three band data shows no siginificantmisregistration neither line and column direction. Three narrow strips of data near the west ,middle and east ofthe scene were selected for one dimentional correlation tests to determine registration errors. Subpixel accuracyin locating the correlation peak was achieved by curve fitting and utilizing the peak of the fitted curve. Band4data was not employed for the test because it shows poor correlation to other band data. Estimated meanabsolute value of registration errors was less than 0.25 pixel.
釧路工業高等専門学校の論文
2007-12-21