Two-pass color interpolation for color filter array

Yi Hong Yang*, Po-Ning Chen, Peng Hua Wang

*Corresponding author for this work

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

1 Scopus citations

Abstract

How to manufacture a low-cost digital still camera (DSC) that can meanwhile provide a good image quality is always an engineering challenge. For this purpose, the color filter array (CFA) is perhaps the most commonly used structure for modern DSCs. However, since most of the color information is filtered out, a good interpolation process is required to retrieve the original image. Many interpolation methods have thus been proposed. In this work, we propose to perform the edge-preserving signal correlation based (EP-SCB) interpolation [1] as a second pass to those images restored from some other existing interpolation methods such as local polynomial approximation intersection of confidence intervals (LPA-ICI) rule [2]. Experiments show that most of the images' PSNRs can be improved by the second pass. The simplicity of the EP-SCB hence makes it a suitable candidate as an enhancement option for DSCs techniques.

Original languageEnglish
Title of host publicationIST 2012 - 2012 IEEE International Conference on Imaging Systems and Techniques, Proceedings
Pages297-302
Number of pages6
DOIs
StatePublished - 12 Dec 2012
Event2012 IEEE International Conference on Imaging Systems and Techniques, IST 2012 - Manchester, United Kingdom
Duration: 16 Jul 201217 Jul 2012

Publication series

NameIST 2012 - 2012 IEEE International Conference on Imaging Systems and Techniques, Proceedings

Conference

Conference2012 IEEE International Conference on Imaging Systems and Techniques, IST 2012
CountryUnited Kingdom
CityManchester
Period16/07/1217/07/12

Keywords

  • Bayer pattern
  • color filter array
  • color interpolation
  • edge-preserving interpolation
  • ordered sequences

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    Yang, Y. H., Chen, P-N., & Wang, P. H. (2012). Two-pass color interpolation for color filter array. In IST 2012 - 2012 IEEE International Conference on Imaging Systems and Techniques, Proceedings (pp. 297-302). [6295504] (IST 2012 - 2012 IEEE International Conference on Imaging Systems and Techniques, Proceedings). https://doi.org/10.1109/IST.2012.6295504