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http://dx.doi.org/10.6109/jkiice.2010.14.7.1581

Demosaicing Algorithm and Hardware Implementation with Weighted Directional Filtering for Diagonal Edge  

Kwak, Boo-Dong ((주)삼성전기 중앙연구소)
Jeong, Hyo-Won (동아대학교 전자공학과)
Yang, Jeong-Ju (동아대학교 전자공학과)
Jang, Won-Woo (동아대학교 전자공학과)
Kang, Bong-Soon (동아대학교 전자공학과)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.14, no.7, 2010 , pp. 1581-1588 More about this Journal
Abstract
Most digital cameras use a single image sensor with Color Filter Array(CFA) for the advantage of costs and speed. The various color interpolation(demosaicing) algorithms are researched to reconstruct a full representation of the image. In this paper, we proposed a method of demosaicing about using weighted directional filter for vertical, horizontal, and diagonal direction edge. The method considered the efficiency of hardware resources for hardware implementation. The performance of proposed method was confirmed by comparing the conventional method in experiments using 24 Kodak test images. The proposed method was designed by Verilog HDL and was verified by using Virtex4 FPGA boards and CMOS Image Sensor.
Keywords
Demosaicing; Color Interpolation; Color Filter Array(CFA); Bayer Pattern; Directional Filter;
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