A STUDY ON SATELLITE IMAGE APPLIED TO DISASTER PREVENTION MAP

摘要

Taiwan is situated in Asia pacific region with risk for natural disaster especially the occurrence of the frequent typhoons in every year between July and October. People are under serious threat from different aspects of disasters such as flood, mudslide, devastated road and river floods due to the torrential rain. Integration of those disasters information becomes a critical issue in recently year. With the advance of the modern spatial information technology, electronic map service is very mature, coupled with the popularity of mobile phones and personal computers. The masses can easily to share information on the internet. The remotely sensed visible imagery has been used in various fields. The main characteristics of visible imagery are high spatial resolution, stable geometry, and rich information appropriate for human vision. It is also the most important reference for the disaster prevention and management applications. In this study, we take advantage of web crawler technique to collect the data in the internet for the typhoon event happened on 2016 (including Meranti. Nepartak, Megi and Aere). Those structured data were scraped from the webpage and build an index in the database for search engine. One the other hand, orthorectification of FORMOSAT-2 and THEOS satellite image was published with WMTS Tile Server to compare pre- and post-disaster conditions. That information is integrated in to a single geographic platform, using GOOGLE as system basemap to support disaster prevention.