Journal of KIISE:Software and Applications (한국정보과학회논문지:소프트웨어및응용)

Korean Institute of Information Scientists and Engineers (한국정보과학회)
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Pattern Classification of Multi-Spectral Satellite Images based on Fusion of Fuzzy Algorithms

퍼지 알고리즘의 융합에 의한 다중분광 영상의 패턴분류

  • 전영준 (동의대학교 컴퓨터공학과) ;
  • 김진일 (동의대학교 컴퓨터공학과)
  • Published : 2005.07.01
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Abstract

This paper proposes classification of multi-spectral satellite image based on fusion of fuzzy G-K (Gustafson-Kessel) algorithm and PCM algorithm. The suggested algorithm establishes the initial cluster centers by selecting training data from each category, and then executes the fuzzy G-K algorithm. PCM algorithm perform using classification result of the fuzzy G-K algorithm. The classification categories are allocated to the corresponding category when the results of classification by fuzzy G-K algorithm and PCM algorithm belong to the same category. If the classification result of two algorithms belongs to the different category, the pixels are allocated by Bayesian maximum likelihood algorithm. Bayesian maximum likelihood algorithm uses the data from the interior of the average intracluster distance. The information of the pixels within the average intracluster distance has a positive normal distribution. It improves classification result by giving a positive effect in Bayesian maximum likelihood algorithm. The proposed method is applied to IKONOS and Landsat TM remote sensing satellite image for the test. As a result, the overall accuracy showed a better outcome than individual Fuzzy G-K algorithm and PCM algorithm or the conventional maximum likelihood classification algorithm.

본 논문에서는 다중분광 영상의 분류를 위하여 퍼지 G-K(Gustafson- Kessel) 알고리즘과 PCM 알고리즘을 융합한 분류방법을 제안하였다. 제안된 방법은 학습데이타를 이용하여 퍼지 G-K 알고리즘을 수행한 후 그 결과를 이용하여 PCM 알고리즘을 수행한다 PCM 알고리즘과 퍼지 G-K 알고리즘 분류결과를 비교하여 그 결과가 일치하면 해당 항목으로 분류항목을 결정한다. 일치하지 않는 화소는 PCM 알고리즘의 평균내부거리 안쪽에 있는 화소들을 새로운 학습데이타로 하여 베이시안 최대우도 분류를 수행하여 분류항목을 결정한다. 평균내부거리 안쪽에 있는 화소 데이타는 정규분포형태를 보여준다. 다차원 다중분광 영상인 IKONOS와 LANDSAT TM 위성영상을 이용하여 제안된 알고리즘의 효율성을 검증한 결과 퍼지 G-K 알고리즘과 PCM 알고리즘 그리고 전통적인 분류 방법인 최대우도 분류 알고리즘보다 전체 정확도가 더 높은 결과를 얻을 수 있었다

Keywords

References

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