摘要
本文介绍了一种利用两个数字信号序列的相关系数对数字信号信噪比的估计方法。从相同条件下的两个信号序列的互相关函数着手 ,导出了信号序列的相关系数与数字信号的信噪比之间的关系。通过实例介绍了该方法在图像噪声分析中的应用 。
A new method was introduced whereby the signal noise ratio of a digital signal can be estimated directly with the correlation coefficient between two series of digital signals. Based on the two series of digital signals under the same conditions, the relationship between the correlation coefficient and signal noise ratio was induced and ways of noise analysis in the case of images were shown. Two examples through different approaches were contrasted and analyzed.
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2003年第1期136-138,共3页
Acta Armamentarii
关键词
数字信号
CCD
暗电流噪声
信噪比
相关系数
information processing technique, correlation coefficient, signal noise ratio, CCD image sensor, dark current, digital signal processing
