摘要
阐述了硬阀值法、软阀值法和半软阀值法去噪的原理及其算法的实现,针对传统小波去噪后,图像的部分细节丢失、边缘模糊等问题,提出一种改进半软阀值的计算方法。实验结果表明,改进的方法具有更好的去噪效果。
This paper explained the principle and algorithm realization of hard threshold, soft threshold method and semi - soft threshold. According to the problems of image details missing, edge bluing and other issues after traditional wavelet denoising, putting forward an improving method of semi - soft threshold. The experimental results show that the improving method has more advantages in denoising.
出处
《测绘与空间地理信息》
2016年第7期24-26,共3页
Geomatics & Spatial Information Technology
基金
国家自然科学基金(41541032)
广西研究生创新项目(YCSZ2015163)资助
关键词
小波去噪
阀值
算法
信噪比
wavelet denoising
threshold
algorithm
signal to noise ratio
