Noise Band Elemination of Hyperion Image using Fractal Dimension and Continuum Removal Method

프랙탈 차원 및 Continuum Removal 기법을 이용한 Hyperion 영상의 노이즈 밴드 제거

  • Chang, An-Jin (Department of Civil & Environmental Engineering, Seoul National University) ;
  • Kim, Yong-Il (Department of Civil & Environmental Engineering, Seoul National University)
  • 장안진 (서울대학교 공과대학 건설환경공학부) ;
  • 김용일 (서울대학교 공과대학 건설환경공학부)
  • Published : 2008.04.30

Abstract

Hyperspectral imaging is used in a wide variety of research since the image is obtained with a wider wavelength range and more bands than multispectral imaging. However, there are limitations, namely that each band has a shorter wavelength range, the computation cost is increased in the case of numerous bands, and a high correlation between each band and noise bands exists. The previous analysis method does not produce ideal results due to these limitations. Therefore, in the case of using the hyperspectral image, image analysis after eliminating noise bands is more accurate and efficient. In this study, noise band elimination of the hyperspectral image preprocessing is highlighted, and we use fractal dimension for noise band elimination. The Triangular Prism Method is used, being the typical fractal dimension method of the curved surface. The fractal dimension of each band is calculated. We then apply the Continuum Removal method to normalize. A total of 35 bands are estimated by noise band with a threshold value that is obtained empirically. The hyperion hyperstpectral image collected on the EO-1 satellite is used in this study. The result delineates that noise bands of the hyperion image are able to be eliminated with the fractal dimension and Continuum Removal method.

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