The modified gradient edge detection method for the color filter array image of the CMOS image sensor

被引：7
|
作者：
Zhang, Yu [1 ]
Wang, Guangyi [1 ]
Xu, Jiangtao [2 ]
Shi, Zaifeng [2 ]
Dong, DeXing [3 ]
机构：
[1] Hangzhou Dianzi Univ, Inst Elect & Informat, Hangzhou, Zhejiang, Peoples R China
[2] Tianjin Univ, Sch Elect & Informat Engn, Tianjin 300072, Peoples R China
[3] Brigates Microelect Co Ltd, Kunshan, Peoples R China
来源：
OPTICS AND LASER TECHNOLOGY | 2014年 / 62卷
基金：
中国国家自然科学基金;
关键词：
Demosaicing; Edge detection; CMOS image sensor; INTERPOLATION; DEMOSAICKING;
D O I：
10.1016/j.optlastec.2014.02.017
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The modified gradient edge detection method applied in demosaicing the color filter array image is proposed in this paper. Firstly, the adjacent pixels are ranged from large to small. Then, the absolute differences of sorted pixels are calculated to analyze the distribution of the possible edge. Finally, the arithmetic operators being along the possible edge and that being across the possible edge are designed to estimate the accurate edge information. The experimental results verify that the proposed method gives better performance than the traditional gradient edge detection methods, and can discriminate the accurate edge, even where the gradients in different direction are close. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：73 / 81
页数：9
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