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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 4,
  • Issue 9,
  • pp. 546-549
  • (2006)

Adjacency effect estimation by ground spectra measurement and satellite optical sensor synchronous observation data

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This paper addresses the estimation of adjacency effect of CBERS-2 image. The adjacency effect influences the digital number (DN) value of a pixel by adding surrounding scattering signals and path scattering signals. Based on the theory of radiation transfer model, a procedure is designed to measure the reflectance from the surface target materials and the materials in a box, which is 1.5 m above the surface to avoid upwelling reflectance. The results show that the adjacency effect varies from visible, near infrared and becomes steady within short infrared wavelength region; the adjacency effect weakens with the increase of distance between testing sites. The adjacency effect of CBERS-2 image is corrected and the quality of the resulting image is improved.

© 2006 Chinese Optics Letters

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