Disaster Intensity-Based Selection of Training Samples for Remote Sensing Building Damage Classification

Luis Moya, Christian Geiss, Masakazu Hashimoto, Erick Mas, Shunichi Koshimura, Gunter Strunz

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Previous applications of machine learning in remote sensing for the identification of damaged buildings in the aftermath of a large-scale disaster have been successful. However, standard methods do not consider the complexity and costs of compiling a training data set after a large-scale disaster. In this article, we study disaster events in which the intensity can be modeled via numerical simulation and/or instrumentation. For such cases, two fully automatic procedures for the detection of severely damaged buildings are introduced. The fundamental assumption is that samples that are located in areas with low disaster intensity mainly represent nondamaged buildings. Furthermore, areas with moderate to strong disaster intensities likely contain damaged and nondamaged buildings. Under this assumption, a procedure that is based on the automatic selection of training samples for learning and calibrating the standard support vector machine classifier is utilized. The second procedure is based on the use of two regularization parameters to define the support vectors. These frameworks avoid the collection of labeled building samples via field surveys and/or visual inspection of optical images, which requires a significant amount of time. The performance of the proposed method is evaluated via application to three real cases: the 2011 Tohoku-Oki earthquake-tsunami, the 2016 Kumamoto earthquake, and the 2018 Okayama floods. The resulted accuracy ranges between 0.85 and 0.89, and thus, it shows that the result can be used for the rapid allocation of affected buildings.

Original languageEnglish
JournalIEEE Transactions on Geoscience and Remote Sensing
DOIs
Publication statusAccepted/In press - 2021

Keywords

  • Automatic labeling
  • building damage
  • multiregularization parameters
  • support vector machine (SVM).

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Earth and Planetary Sciences(all)

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