红外与毫米波学报, 2004, 23 (4): 281, 网络出版: 2006-05-10
基于小波域的图像噪声类型识别与估计
IDETIFYING OF NOISE TYPES AND ESTIMATING OF NOISE LEVEL FOR A NOISY IMAGE IN THE WAVELET DOMAIN
小波变换 图像去噪 噪声类型识别 噪声估计 wavelet transform image denoising noise type identification noise level estimation
摘要
提出了一种基于小波域分解的类型识别方法.该方法利用噪声图像的小波高频子带系数能量分布,对图像中最常出现的两类噪声:高斯噪声和椒盐噪声进行识别,并在此基础上对高斯噪声的方差和椒盐噪声的密度进行了估计.对大量含噪图像的实验结果表明:该方法对图像噪声类型的识别和噪声大小的估计都比较准确.
Abstract
A novel methodology for identifying noise types and estimating noise level was reported. The energy distribution of the HH subband's coefficients in the wavelet domain was used to distinguish Gaussian white noise and salt & pepper noise, which exist in images frequently. And the variance of the Gaussian white noise and the density of salt & pepper noise were estimated. The experiments on a wide variety of images indicate the veracity of distinguishing and estimating of noise.
张旗, 梁德群, 樊鑫, 李文举. 基于小波域的图像噪声类型识别与估计[J]. 红外与毫米波学报, 2004, 23(4): 281. 张旗, 梁德群, 樊鑫, 李文举. IDETIFYING OF NOISE TYPES AND ESTIMATING OF NOISE LEVEL FOR A NOISY IMAGE IN THE WAVELET DOMAIN[J]. Journal of Infrared and Millimeter Waves, 2004, 23(4): 281.