Computer Science

Computer Science ›› 2021, Vol. 48 ›› Issue (11A): 386-390.doi: 10.11896/jsjkx.210200053

• Image Processing & Multimedia Technology • Previous Articles     Next Articles

Light Superposition-based Color Constancy Computational Method

FENG Yi-fan, ZHAO Xue-qing, SHI Xin, YANG Kun   

  1. School of Computer Science,Xi'an Polytechnic University,Xi'an 710048,China
  • Online:2021-11-10 Published:2021-11-12
  • About author:FENG Yi-fan,born in 1996,postgraduate.Her main research interests include image processing and color computational.
    ZHAO Xue-qing,born in 1985,Ph.D,associate professor.Her main research interests include image processing and brain-like computation.
  • Supported by:
    National Natural Science Foundation of China(61806160).

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Abstract: Color constancy is a psychological tendency of the human visual system the color perception of external visual stimuli.This cognitive function of human vision can adaptively ignore external changes,and perceive colors steadily.Inspired by the color perception of the human visual system,considering the capability that computer vision tasks eliminate the effect of external light automatically,it is of important research significance to restore the true color information of objects and provide stable color characteristics.This paper proposes a light superposition-based color constancy computational method,which can effectively eliminate the influence of changes in the spectral composition of external light on the color of objects.First of all,the MAX-MEAN method is proposed to estimate the illumination in the scene (MM estimation,in short),that is,estimating the illumination in the achromatic scene by the average reflection and maximum reflection of all object surfaces in the scene.Then,based on the MM estimation,the color constant calculation method of light superposition is used to obtain the final color-free image.11346 indoor and outdoor scene images in the SFU Gray-ball public data set are used for simulation and validation.The experimental results show that the illumination superposition color constant calculation method proposed in this paper can effectively estimate the illumination information,perform the color constancy calculation,and get the image without color constancy.

Key words: Color constancy, Image processing, Light estimation, Visual system

CLC Number: 

  • TP391
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