Journal of Electrical Engineering and information Science

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

Color Image Enhancement by Fundamental Vector Transformation and Nonlinear Mapping

  • Published : 1998.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, a new light-value approaching method to enhance a color image by excluding the effect of incident illumination is proposed. The method uses the fundamental vector transformation in which an estimated color of illumination is rotated to the white color of natural daylight. Then the transformed red, green, and blue values of each pixel are nonlinearly mapped into the 8-bit values to enhance intensity and saturation in the dark portion of the image. The proposed algorithm can produce the enhanced color image fast and efficiently without any space conversion or noticeable distortion.

Keywords

References

  1. Vision Res. v.26 no.1 Recent Advances in Retinex Theory E.H.Land
  2. J. Opt. Soc. Am. v.3 no.10 Evaluation of linear models of surface spectral reflectance with small numbers of parameters Laurence T.Maloney
  3. J. Opt. Soc. Am. v.13 no.10 Mechanisms of Color Constancy M.DZmura;P.Lennie
  4. J. Opt. Soc. Am. v.3 no.10 Method for computing the sceneilluminant chromaticity from specular highlights Hsien Che,Lee
  5. IEEE Trans. On PAMI v.12 no.10 Separating a Color Signal into Illumination and Surface Reflectance Components: Theory and Applications Jian Ho;Brian C.Funt;Mark S.Drew
  6. IS&T Color Imaging Conference: Transforms & Trasportablity of Color Pseudo-Linearly Modified HIS Color Model and its application to Color Image J.Y.Kim;Y.H.Ha
  7. Technical Report 1934 A Vector Signal Processing Approach to Color Kah Kay Sung
  8. Fundamentals of Robotics: Analysis & Control Robert J.Schilling
  9. Digital Coding of Waveforms: Principles and Applications to Speech and Video N.S.Jayant;Peter Noll
  10. The Measurement of Appearance (2nd ed.) Richard S.Hunter;Richard W.Harold