摘要
数字图像在产生过程中,由于数字化设备等原因经常会受到噪音污染。因此,对于数字图像应该对其进行去噪音处理。传统的去噪音方法有自身的缺陷,现提出了基于小波变换的图像去噪音方法,该方法通过对图像进行二维小波变换,将图像投影到小波变换域中,对其变换系数进行阈值处理,从而达到对噪声的平滑,最后再进行逆小波变换,得到经过去噪的数字图像。实验证明具有很好的效果。
When digitalize an image, the digital image will be noised by the digital device which digitalize the image. So should take some methods to noise reduction, there are some methods can noise reduction but have its limitation.Nowstudies an image smoothed based on wavelet analysis. By thresholding the wavelet transform coefficients of noisy images. The original image can be reconstructed correctly. Simulations show this method is valid.
出处
《微机发展》
2003年第7期88-90,共3页
Microcomputer Development
基金
国家"九五"重点科技攻关资助项目(96-919-01-037)
