Earth Science Frontiers ›› 2009, Vol. 16 ›› Issue (6): 248-256.

• Article • Previous Articles     Next Articles

A study of RS image landform frame and lithologic component decomposing algorithm and multifractal feature of rock types.

 BO Wei, NI Guo-Jiang, LI Han-Bei   

  1. 1School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, China
    2National Key Laboratory of Remote Sensing Information and Image Analysis Technology, Beijing Research Institute of Uranium Geology, Beijing 100029, China
  • Received:2009-06-10 Revised:2009-11-15 Online:2009-12-16 Published:2009-12-10

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Abstract:

 Landform framelithologic component decomposing algorithm for remote sensing (RS) image is proposed according to the principle of optical imaging and fractal feature of landform. The algorithm is applied to decomposing the ETM image of rocks for the study of αf(α) multifractal spectrum. The original ETM image, decomposed landform frame subimage and lithologic component subimage are used to calculate the αf(α) multifractal spectra of adamellite and metamorphic sedimentary rocks in different area. With the original ETM image, the αf(α) multifractal spectra do not show any relation to rock types. However, with the decomposed image, the adamellite in different area have the same αf(α) spectra feature of lithologic component subimage and different αf(α) spectra feature of landform frame subimage. On the contrary, the adamellite and metamorphic sedimentary rocks in nearby area have similar αf(α) spectra of landform frame subimage and different αf(α) spectra of lithologic component subimage. This means the landform framelithologic component algorithm and αf(α) multifractal spectrum can provide a new validate method to improve the lithology recognition with RS image texture.

Key words: remote sensing (RS) image; landform framelithologic component model;