红外凝视成像系统中的CDS噪声抑制技术

白俊奇; 陈 钱; 钱惟贤

doi:10.11834/jig.20100706

图像处理和编码 | 浏览量 : 0 下载量: 189 CSCD: 0

PDF
导出
分享
收藏
专辑

红外凝视成像系统中的CDS噪声抑制技术
Techniques of CDS Noise Filtering in Staring Infrared Imaging System
2010年15卷第7期页码：1062
网络出版：2010-07-23，

纸质出版：2010
DOI： 10.11834/jig.20100706
稿件说明：

移动端阅览

白俊奇, 陈钱, 钱惟贤. 红外凝视成像系统中的CDS噪声抑制技术[J]. 中国图象图形学报, 2010,15(7):1062. DOI： 10.11834/jig.20100706.

BAI Junqi, CHEN Qian, QIAN Weixian. Techniques of CDS Noise Filtering in Staring Infrared Imaging System[J]. Journal of Image and Graphics, 2010, 15(7): 1062. DOI： 10.11834/jig.20100706.

摘要

固定图案噪声是红外焦平面阵列的一种固有噪声，该噪声在低温场景尤其突出，影响了探测器的成像质量。基于探测器读出电路结构，理论分析了相关双取样电路（CDS）对焦平面阵列非均匀性的影响，并通过数据仿真给出了CDS噪声的空间和时间分布特征。针对CDS噪声特征，提出将迭代原理和黑体定标校正相结合的噪声滤波算法。实验结果表明，算法有效抑制了CDS电路噪声，提高了非均匀性校正的精度，具有较强的实用价值。

Abstract

Fixed pattern noise

an inherent noise of infrared focal plane array (IRFPA)

is serious in the low-temperature scene and affects detector imaging quality. The influence of Correlated Double Sampling (CDS) to the nonuniformity in IRFPA is theoretically analyzed based on the structure of internal readout circuit

moreover

the space and time distribution features of CDS noise are described according to simulation data. Aiming at these features

a noise filtering algorithm using the combination of iterative theory and blackbody calibration is proposed. Experimental results show the proposed algorithm can effectively eliminate CDS circuit noise

increase nonuniformity correction precision and have strong utility value.

关键词

Keywords

references

文章被引用时，请邮件提醒。

提交

暂无数据