摘要
小波系数是图像进行小波分解后得到的系数,小波系数的分布、大小、多少直接影响着图像的质量。本文主要探讨含有统计噪音的数字仿真图像Logan_Sheep图像,利用硬阈值法对正交小波分解系数处理的前后,高频域中的小波系数的多少对图像特征的保留的影响。试验表明只要有很少的大的小波系数就能保留图像的特征。
Wavelet coefficient influences the image quality. Noised image are decomposed by muhiwavelet transform,De - Noising statistical noise with wavelet transform was applied to the soft thresholding in Logan_Sheep. The effect of wavelet coefficient in high frequency on preserved image was studied. The results showed that little wavelet coefficient can preserved the image details.
出处
《内蒙古农业大学学报（自然科学版）》
CAS
2006年第3期93-95,共3页
Journal of Inner Mongolia Agricultural University(Natural Science Edition)
关键词
统计分析
小波系数
图像特征
Statistical analysis
wavelet coefficient
image details
