| 自适应正则化项去除乘性噪声 |
| |
| 引用本文： | 赵志龙,刘卉,张欢.自适应正则化项去除乘性噪声[J].电子科技,2011,24(1):1-3,8. |
| |
| 作者姓名： | 赵志龙 刘卉 张欢 |
| |
| 作者单位： | (1.西安电子科技大学 理学院,陕西 西安 710071;2.东北大学 理学院,辽宁 沈阳 110004) |
| |
| 摘 要： | 针对乘性噪声去噪算法研究,乘性噪声多出现在合成孔径雷达、超声波和激光等相干图像系统中,与标准高斯加性噪声不同,乘性噪声符合瑞利和伽马分布函数。文中通过:(1)取对数把乘性噪声模型转变成相加形模型;(2)改进正则化项成为自适应扩散模型;(3)将数学模型应用于图像处理的实践当中。在解决了阶梯效应的同时保持了图像的边缘。
|
| 关 键 词： | 乘性噪声 图像恢复 总变分 自适应正则化项 |
Removal of Multiplicative Noise by the Adaptive Fidelity Term |
| |
| Zhao Zhilong,Liu Hui,Zhang Huan.Removal of Multiplicative Noise by the Adaptive Fidelity Term[J].Electronic Science and Technology,2011,24(1):1-3,8. |
| |
| Authors: | Zhao Zhilong Liu Hui Zhang Huan |
| |
| Affiliation: | (1.School of Science,Xidian University,Xi'an 710071,China;2.School of Science,Northeastern University,Shenyang 110004,China) |
| |
| Abstract: | Multiplicative noise,unlike the standard Gaussian additive noise,often appears in synthetic aperture radar and sonar and laser imaging.The multiplicative noise agrees with Rayleigh and Gamma functions.This paper converts the multiplicative model into an additive one by taking logarithms,changes the standard TV regularizer into an adaptive fidelity term diffusion model and applies mathematical models into multiplicative imaging denoising.The model can not only remove noise but also enhance edges. |
| |
| Keywords: | multiplicative noise image restoration total variation adaptive fidelity term |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《电子科技》浏览原始摘要信息 |
|
点击此处可从《电子科技》下载全文 |
|
