摘要
提出一种基于图像边缘检测的小波阈值去噪新方法。该方法利用Canny算子检测出图像的边缘,进而定义了一种新的阈值函数,然后对含噪图像、边缘图像的小波变换系数采用新阈值函数分别进行阈值处理,将处理后的边缘图像与图像的小波系数进行融合,得到去噪后的图像。实验结果表明,采用该方法处理的去噪图像,能够在去噪的同时有效地保持图像的边缘信息。
The image denoising method based on edge detection and wavelet threshold is proposed.This method is to use Canny operator to detect the edge of the image,and defines a new threshold function.The noised image and the image edge are denoised by a new wavelet threshold method and finally the denoised image is obtained by fusing the wavelet denoised image and the edge image.Experiment results show that the method can effectively keep image′s edges and excels commonly-used wavelet threshold denoising methods.
出处
《天津工程师范学院学报》
2009年第4期23-25,共3页
Journal of Tianji University of Technology and Education
基金
天津市自然科学基金资助项目(08JCYBJC12100)
关键词
小波变换
图像去噪
边缘检测
阈值函数
wavelet transform
image denoising
edge detection
threshold function
