摘要
通过对人眼视觉特性及图像噪声产生机理的分析,对零均值平稳噪声提出了帧间降噪的基本原理,给出了帧间降噪使图像信噪比改善的精确解析表达式,并确定了叠加帧数的选择原则。通过实例证明,帧间降噪系统可有效去除噪声,提高图像信噪比。该系统在埋弧焊管生产线上的X光工业电视检测中已得到广泛应用。
Based on the analysis of human eyes vision features and image noise producing mechanism,this article explored keystone of zero average stable noise between frames,and provided exact resolution expression that could reduce image noise between frames and improve signal-to-noise ratio.Proved by practical examples,the system could effectively reduce image noise.This system was widely used in X-ray industrial TV inspection of SSAW pipe production line.
出处
《焊管》
2007年第1期61-64,69,共5页
Welded Pipe and Tube
