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.
出处
《海洋测绘》
2010年第3期65-66,82,共3页
Hydrographic Surveying and Charting
关键词
小波变换
多项式拟合
硬阈值
wavelet transform
multinomial fit
solid threshold
