Color reproductivity improvement with additional virtual color filters for WRGB image sensor

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

We have developed a high accuracy color reproduction method based on an estimated spectral reflectance of objects using additional virtual color filters for a wide dynamic range WRGB color filter CMOS image sensor. The four virtual color filters are created by multiplying the spectral sensitivity of White pixel by gauss functions which have different central wave length and standard deviation, and the virtual sensor outputs of those virtual filters are estimated from the four real output signals of the WRGB image sensor. The accuracy of color reproduction was evaluated with a Macbeth Color Checker (MCC), and the averaged value of the color difference ΔEab of 24 colors was 1.88 with our approach.

Original languageEnglish
Title of host publicationProceedings of SPIE-IS and T Electronic Imaging - Color Imaging XVIII
Subtitle of host publicationDisplaying, Processing, Hardcopy, and Applications
DOIs
Publication statusPublished - 2013 Apr 10
EventColor Imaging XVIII: Displaying, Processing, Hardcopy, and Applications - Burlingame, CA, United States
Duration: 2013 Feb 42013 Feb 6

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8652
ISSN (Print)0277-786X

Other

OtherColor Imaging XVIII: Displaying, Processing, Hardcopy, and Applications
CountryUnited States
CityBurlingame, CA
Period13/2/413/2/6

Keywords

  • CMOS image sensor
  • LOFIC
  • WRGB color filter
  • color signal processing
  • spectrum estimation

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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