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An Effective Method for Illumination-Invariant Representation of Color Images

  • Takahiko Horiuchi
  • Abdelhameed Ibrahim
  • Hideki Kadoi
  • Shoji Tominaga
Part of the Lecture Notes in Computer Science book series (LNCS, volume 7584)

Abstract

This paper proposes a method for illumination-invariant representation of natural color images. The invariant representation is derived, not using spectral reflectance, but using only RGB camera outputs. We suppose that the materials of target objects are composed of dielectric or metal, and the surfaces include illumination effects such as highlight, gloss, or specularity. We preset the procedure for realizing the invariant representation in three steps: (1) detection of specular highlight, (2) illumination color estimation, and (3) invariant representation for reflectance color. The performance of the proposed method is examined in experiments using real-world objects including metals and dielectrics in detail. The limitation of the method is also discussed. Finally, the proposed representation is applied to the edge detection problem of natural color images.

Keywords

Illumination-invariant color image highlight detection spectral reflectance estimation 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Takahiko Horiuchi
    • 1
  • Abdelhameed Ibrahim
    • 1
    • 2
  • Hideki Kadoi
    • 1
  • Shoji Tominaga
    • 1
  1. 1.Graduate School of Advanced Integration ScienceChiba UniversityInage-kuJapan
  2. 2.Faculty of EngineeringMansoura UniversityMansouraEgypt

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