Computer Science ›› 2018, Vol. 45 ›› Issue (10): 246-249.doi: 10.11896/j.issn.1002-137X.2018.10.045

• Graphics, Image & Pattern Recognition • Previous Articles     Next Articles

Improved Image Enhancemengt Algorithm Based on Multi-scale Retinex with Chromaticity Preservation

ZHANG Xiang1, WANG Wei2, XIAO Di1   

  1. College of Electrical Engineering and Control Science,Nanjing Tech University,Nanjing211800,China 1
    Aviation Medicine,The Naval Medical Research Institute,Shanghai 200433,China 2
  • Received:2017-09-14 Online:2018-11-05 Published:2018-11-05

Abstract: An improved image enhancement algorithm based on MSRCP(multi-scale Retinex with chromaticity preservation) was proposed to solve the problems of halo artifacts and color distortion.Firstly,the intensity image of the origi-nal image is obtained.Then,the intensity image is smoothed by guided filtering and the illuminance component is estimated.And the reflection component is estimated according to the principle of Retinex.Finally,in the color restoration function,the S curve function is used to obtain the final enhanced image.The experimental results show that this algorithm can effectively solve the phenomenon of halo artifacts and improve the details.The overall color of the enhanced image is consistent with original image.The overall visual effect of the image is improved.

Key words: Guided filter, Image enhancement, MSRCP, Retinex, S curve function

CLC Number: 

  • TP391.41
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