A method for quickly extracting seismogeological hazards in Yingxiu, Sichuan Province, China

Qinjun Wang; Yu Chen; Jiantao Bi; Qizhong Lin

doi:10.1117/12.2066117

8 November 2014 A method for quickly extracting seismogeological hazards in Yingxiu, Sichuan Province, China

Qinjun Wang, Yu Chen, Jiantao Bi, Qizhong Lin

Proceedings Volume 9260, Land Surface Remote Sensing II; 92602C (2014) https://doi.org/10.1117/12.2066117
Event: SPIE Asia-Pacific Remote Sensing, 2014, Beijing, China

Abstract

A method for seismogeological hazards extraction using high resolution remote sensing was proposed in the research taken the epicenter of Wenchuan earthquake-Yingxiu town as the study area. In which, making imagery was built according to the Digital Elevation Model (DEM) to remove interfering factors. Then, the masked imagery was diced into several small parts to reduce the large imageries’ inconsistency and they were used as the sources to be classified. After that, the vector conversion was performed on the classified images to mapping geological hazards. Finally, other interfering factors such as bare lands, lands covered by few vegetation and buildings on the top altitude were removed manually. For it can extract geological hazards in a short time, it is of great importance for the decision–makers and rescuers to know the damaged degree in the disaster area, especially within 72 hours after the earthquake. Therefore, it will play an important role in decision making, site rescue and hazards response planning.

Citation Download Citation

Qinjun Wang, Yu Chen, Jiantao Bi, and Qizhong Lin "A method for quickly extracting seismogeological hazards in Yingxiu, Sichuan Province, China", Proc. SPIE 9260, Land Surface Remote Sensing II, 92602C (8 November 2014); https://doi.org/10.1117/12.2066117

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KEYWORDS

Remote sensing

Image segmentation

Earthquakes

Image classification

Vegetation

Hazard analysis

Buildings

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