摘要
介绍了阈值计算的SURE阈值、多分辨率SURE阈值和平移不变阈值,以及硬取阈值、软取阈值估计子,同时提出了一种新的小波消噪阈值选取方法,与硬取阈值、软取阈值进行了比较。仿真结果表明,消噪效果有明显的改观。
This paper introduces threshold calculation methods such as SURE multi-resolution SURE translation-invariant threshold and estimate arithmetic operators which includes hard-threshold and soft-threshold. In addition presents a new method for wavelet denoise threshold selections and compares with hard-threshold and soft-threshold. The results show the denoise effects are improved.
出处
《电测与仪表》
北大核心
2005年第7期4-6,共3页
Electrical Measurement & Instrumentation
关键词
小波分析
硬取阈值
软取阈值
多分辨率SURE
平移不变
信号去噪
wavelet analysis hard-threshold soft-threshold multi-resolution SURE translation invariant signal denoisey
