Efficient multi-scale retinex algorithm using multi-rate image processing

  • Authors:

  • Takeshi Okuno;Takao Nishitani

  • Affiliations:

  • Graduate School of System Design, Tokyo Metropolitan University, Hino, Tokyo, Japan;Graduate School of System Design, Tokyo Metropolitan University, Hino, Tokyo, Japan

  • Venue:
  • ICIP'09 Proceedings of the 16th IEEE international conference on Image processing
  • Year:
  • 2009

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Abstract

This paper describes an efficient image enhancement method based on the Multi-Scale Retinex (MSR) theory for applying to a motion picture pre-processing. The proposed method uses a multi-rate xy separable Gaussian filter with a polyphase structure and conducts illumination domain MSR composition. Therefore, The processing amount is drastically reduced to 4-order less than that of original MSR. As enhancing dark and bright areas in an image is the main pre-processing purpose, the method modifies an enhancement function so as to improve color rendition of bright areas on an image. Although our approach aims at simple implementation, the proposed method shows similar performance to the original one and better performance than those of histogram equalization approaches.