Compensation of spectral mismatch to enhance WRGB demosaicking

The presence of spectral mismatch between the components of a WRGB color filter array severely affects the performance of demosaicking. This paper presents a novel method that compensates for the spectral mismatch and greatly enhances the accuracy of R, G, and B interpolation. The method is tested o...

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Bibliographic Details
Published in2015 IEEE International Conference on Image Processing (ICIP) pp. 68 - 72
Main Authors Po-Hsun Su, Po-Chang Chen, Chen, Homer H.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.09.2015
Subjects
CMOS image sensor
CMOS integrated circuits
Color filter array
demosaicking
Image color analysis
Interpolation
Semiconductor device modeling
Sensitivity
Signal to noise ratio
spectral response
Upper bound
white pixel
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Summary:The presence of spectral mismatch between the components of a WRGB color filter array severely affects the performance of demosaicking. This paper presents a novel method that compensates for the spectral mismatch and greatly enhances the accuracy of R, G, and B interpolation. The method is tested on a two-megapixel WRGB CMOS image sensor. The results show that the proposed method brings the performance of WRGB demosaicking to an unprecedented level competitive with that of the state-of-the-art Bayer demosaicking.
DOI:10.1109/ICIP.2015.7350761