改进小波阈值收缩法在去噪中的应用  

Research on Ameliorative Wavelet Threshold Shrink Method to Remove Noise

作　　者：陈新[1] 冯其强[1] 李宗春[1] 

机构地区：[1]解放军信息工程大学测绘学院,河南郑州450052

出　　处：《海洋测绘》2010年第3期65-66,82,共3页Hydrographic Surveying and Charting

摘　　要：小波硬阈值法去噪是图像去噪的有效方法之一,但其产生的估计信号会有附加振荡。提出了一种基于多项式拟合的方法,将阈值函数连接成为一连续函数,振荡现象得到了明显减弱,达到了较好的效果。Wavelet solid threshold method is one of the eftective methods to remove noise, However, theestimated signal which produces has addictive surge. This paper puts forward a new method based onmultinomial fit, This method puts threshold function together to get a continuous function. The experiment resultshows that the new method is a good method because of reducing the phenomena of surge.

关 键 词：小波变换 多项式拟合 硬阈值 

分 类 号：P733.22[天文地球—物理海洋学]