Automatic Detection of Earthquake Damaged Areas from Aerial Images and ...

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Automatic Detection of Earthquake Damaged Areas from Aerial
Images and Digital Map (MPP2) Author(s) : Hiroyuki Shimizu (Shizuoka University, Japan) Toyohiro Gotoh (System Research Co.Ltd., Japan) Hitoshi Saji (Shizuoka University, Japan) Abstract : When a natural disaster, such as a big earthquake, happens, we should grasp the range and seriousness of
the damaged areas for organizing the rescue operation. The aerial images are useful to grasp the damaged
areas widely and rapidly. In this study, we propose a new method of automatic detection of areas damaged
by an earthquake from aerial images. In this method, we use two aerial images that are taken before and
after the earthquake and we use a digital map of the area. First we register each aerial image with the digital
map. Then we compute the differences of registered pixels of two aerial images, and we extract the
damaged areas having large color differences on registered pixels. The damaged areas are detected
automatically and correctly from the aerial images by our proposed method. Menu

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