Automatic Design of Color Filter Arrays in the Frequency Domain

doi:10.1109/TIP.2016.2531287

CORC > 北京大学 > 信息科学技术学院

	Automatic Design of Color Filter Arrays in the Frequency Domain
	Bai, Chenyan ; Li, Jia ; Lin, Zhouchen ; Yu, Jian
刊名	IEEE TRANSACTIONS ON IMAGE PROCESSING
	2016
关键词	Color filter array (CFA) demosaicking multi-objective optimization alternating direction method (ADM) DEMOSAICKING
DOI	10.1109/TIP.2016.2531287
英文摘要	In digital color imaging, the raw image is typically obtained through a single sensor covered by a color filter array (CFA), which allows only one color component to be measured at each pixel. The procedure to reconstruct a full color image from the raw image is known as demosaicking. Since the CFA may cause irreversible visual artifacts, the CFA and the demosaicking algorithm are crucial to the quality of demosaicked images. Fortunately, the design of CFAs in the frequency domain provides a theoretical approach to handling this issue. However, almost all the existing design methods in the frequency domain involve considerable human effort. In this paper, we present a new method to automatically design CFAs in the frequency domain. Our method is based on the frequency structure representation of mosaicked images. We utilize a multi-objective optimization approach to propose frequency structure candidates, in which the overlap among the frequency components of images mosaicked with the CFA is minimized. Then, we optimize parameters for each candidate, which is formulated as a constrained optimization problem. We use the alternating direction method to solve it. Our parameter optimization method is applicable to arbitrary frequency structures, including those with conjugate replicas of chrominance components. Experiments on benchmark images confirm the advantage of the proposed method.; National Natural Science Foundation of China (NSFC) [61370129]; Ph.D. Programs Foundation of Ministry of Education of China [20120009110006]; 973 Program of China [2015CB352502]; NSFC [61231002, 61272341]; Microsoft Research Asia Collaborative Research Program; SCI(E); EI; ARTICLE; baichenyan@gmail.com; jiali.gm@gmail.com; zlin@pku.edu.cn; jianyu@bjtu.edu.cn; 4; 1793-1807; 25
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/437496]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Bai, Chenyan,Li, Jia,Lin, Zhouchen,et al. Automatic Design of Color Filter Arrays in the Frequency Domain[J]. IEEE TRANSACTIONS ON IMAGE PROCESSING,2016.
APA	Bai, Chenyan,Li, Jia,Lin, Zhouchen,&Yu, Jian.(2016).Automatic Design of Color Filter Arrays in the Frequency Domain.IEEE TRANSACTIONS ON IMAGE PROCESSING.
MLA	Bai, Chenyan,et al."Automatic Design of Color Filter Arrays in the Frequency Domain".IEEE TRANSACTIONS ON IMAGE PROCESSING (2016).