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Demosaicing Method for Digital Cameras with White-RGB Color Filter Array

Title
Demosaicing Method for Digital Cameras with White-RGB Color Filter Array
Author
장의선
Keywords
Bayer-like White-RGB; color filter array interpolation; demosaicing; digital camera; W-RGB color filter array
Issue Date
2016-01
Publisher
ELECTRONICS TELECOMMUNICATIONS RESEARCH INST
Citation
ETRI JOURNAL, v. 38, NO 1, Page. 164-173
Abstract
Demosaicing, or color filter array (CFA) interpolation, estimates missing color channels of raw mosaiced images from a CFA to reproduce full-color images. It is an essential process for single-sensor digital cameras with CFAs. In this paper, a new demosaicing method for digital cameras with Bayer-like W-RGB CFAs is proposed. To preserve the edge structure when reproducing full-color images, we propose an edge direction adaptive method using color difference estimation between different channels, which can be applied to practical digital camera use. To evaluate the performance of the proposed method in terms of CPSNR, FSIM, and S-CIELAB color distance measures, we perform simulations on sets of mosaiced images captured by an actual prototype digital camera with a Bayer-like W-RGB CFA. The simulation results show that the proposed method demosaics better than a conventional one by approximately +22.4% CPSNR, +0.9% FSIM, and +36.7% S-CIELAB distance.
URI
http://onlinelibrary.wiley.com/doi/10.4218/etrij.16.0114.1371/abstract;jsessionid=2FFAC1DEE754E17AE6FCD97712B1F5F1.f04t01http://hdl.handle.net/20.500.11754/30634
ISSN
1225-6463; 2233-7326
DOI
10.4218/etrij.16.0114.1371
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > COMPUTER SCIENCE AND ENGINEERING(컴퓨터공학부) > Articles
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