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Retinex Algorithm Improvement for Color Compensation in Back-Light Image Efficently

  • Journal of The Korea Society of Computer and Information
  • Abbr : JKSCI
  • 2011, 16(1), pp.61-70
  • Publisher : The Korean Society Of Computer And Information
  • Research Area : Engineering > Computer Science

김영탁 1 Jae-Hyoung Yu 1 Hernsoo Hahn 1

1숭실대학교

Accredited

ABSTRACT

This paper proposes a new algorithm that improve color component of compensated image using Retinex method for back-light image. A back-light image has two regions, one of the region is too bright and the other one is too dark. If an back-light image is improved contrast using Retinex method, it loses color information in the part of brightness of the image. In order to make up loss information, proposed algorithm adds color components from original image. The histogram can be divided three parts that brightness, darkness, midway using K-mean (k=3) algorithm. For the brightness, it is used color information of the original image. For the darkness, it is converted using by Retinex method. The midway region is mixed between original image and Retinex result image in the ratio of histogram. The ratio is determined by distance from dark area. The proposed algorithm was tested on nature back-light images to evaluate performance, and the experimental result shows that proposed algorithm is more robust than original Retinex algorithm.

Citation status

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