摘要
根据超声图像斑点噪声统计模型的特性,通过对超声图像进行连续小波变换、分形插值小波变换等变换方法以及小波分析的软阈值滤波方法,提出了结合小波软阈值与中值滤波去噪的方法,在不同尺度对信号小波系数进行处理,达到降噪目的.
According to the characteristics of statistical models of ultrasound image speckle noise,a speckle noise method of combining of wavelet soft threshold and medium filter by continuous wavelet transform,fractal imterpolation wavelet transform and soft threshold filter,which purpose is to reduce noise by cheating wavelet coefficients at different scales.
出处
《哈尔滨师范大学自然科学学报》
CAS
2010年第3期37-40,共4页
Natural Science Journal of Harbin Normal University
关键词
小波变换
斑点去噪
超声图像
Wavelet transform
Speckle noise
Ultrasound image
