DMSP夜間可視画像における画素単位の観測値分布を考慮した都市光強度推定手法の提案

概要

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Night-time city light distribution observed by DMSP satellites has been forcused on as a promising approach to monitor the global human activities. Since its intensity of night-time city light is larger than the upper gain limitation of DMSP visible band sensor, an urbanized area is easily saturated. This make it difficult to estimate basic information required in disaster risk assessment such as distribution of population and social infrastructures in an urbanized area. In this paper, new method to estimate original DN which can be observed if the sensor has infinite width of gain considering the distribution of observed DN was proposed. It was clarified that city light distribution developed by new method successfully reflects unduration of light intensity and population in urbanized area.
地域安全学会の論文