「気象衛星ノア画像処理」 : 可視情報を利用した海霧発生域の抽出と海表面温度分布図の作成

概要

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By processing of thermal infrared pictures received directly from polar orbiting weather satellite, NOAA, the sea surface temperature distribution maps are obtaind. In drawing processes of these maps, land areas and cloud coverd areas are eliminated. The temperature of the area where sea fogs are observed has not so evident difference from that of open sea area, therfore it is much difficult not to make a incorrect decision for this area as cold weter lumps. Sea fogs have high albedo and are clearly noticeable only in visible pictures. In order to eliminate these areas where sea fogs are observed, a distrubution diagram of gray scale value in visible spectrum picture and of brightness temperature value from infrared picture for each pixels. It is become clear that pixels being in a circle centering at the peak point of this distribution diagram, come only from the open sea area.
宇部工業高等専門学校の論文