An edge-directed demosaicing algorithm based on integrated gradient

King Hong Chung, Yuk Hee Chan

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

1 Citation (Scopus)


In this paper, an efficient edge-directed demosaicing algorithm for Bayer images is presented. A new edge-sensing measure called integrated gradient (IG) is exploited to extract gradient information in both color intensity and color difference domains simultaneously for the interpolations. This measure supports full resolution and allows one to interpolate the missing samples along an appropriate direction. By sharing it in different stages, it guarantees consistency of the interpolation direction in different channels and saves the effort required to repeatedly extracting gradient information from intermediate interpolation results. An IG-based green plane enhancement is also proposed to further improve the method's efficiency. Simulation results confirmed that the proposed demosaicing algorithm outperforms most up-to-date demosaicing algorithms in terms of both quality and complexity.
Original languageEnglish
Title of host publication2010 IEEE International Conference on Multimedia and Expo, ICME 2010
Number of pages6
Publication statusPublished - 22 Nov 2010
Event2010 IEEE International Conference on Multimedia and Expo, ICME 2010 - Singapore, Singapore
Duration: 19 Jul 201023 Jul 2010


Conference2010 IEEE International Conference on Multimedia and Expo, ICME 2010


  • Color demosaicing
  • Color filter array
  • Color interpolation
  • Digital camera

ASJC Scopus subject areas

  • Human-Computer Interaction
  • Software

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