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Research and Evaluation of Color Gamut Extension Algorithm Based on Image

  • Yali HuangEmail author
  • Yan Li
  • Sile Liu
  • Dan Zhen
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 517)

Abstract

In this paper, a new color gamut extension mapping algorithm based on the image is proposed by using the theoretical three-dimensional color domain boundary. The algorithm can be compatible with the existing conventional gamut video system and give full play to the reappearance advantage of WCG Rec.2020 display devices. In this paper, the mapping relationship between the two color gamut boundaries of Rec.709 and Rec.2020 is determined by the tone angle and the space position angle, and the extension coefficient lookup table of the conventional color gamut extends to the Rec.2020 WCG gamut is obtained. Then the color gamut expansion between the two system gamut is realized by the bilateral filtering and the lookup table assignment. In addition, this paper selects two images from the TID 2008 image library, and carries out data analysis and index evaluation on the color gamut mapping algorithm proposed in this paper. The results show that because the relative position between pixels of the source image is taken into account, the algorithm preserves the color features of the image better.

Keywords

Color gamut Wide color gamut Color gamut extension Bilateral filtering 

Notes

Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grant No: 61701344) and Student’s Platform for Innovation and Entrepreneurship Training Program (Grant No: 201810065410).

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Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  1. 1.Electronic and Communication Engineering CollegeTianjin Normal UniversityTianjinChina

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