摘要
通过简要研究4f光学系统采集到的图像,根据图像信号与噪声信号间的关系与特性,同时结合空间光调制器像素结构引入的频谱复制效应,提出一种基于空域平均的图像去噪方法,得到了较好的效果。实验表明:该方法不仅有效地抑制了部分噪声,还保留了图像的细节信息。
Taking 4f system as representative, the characteristics of noise and image signal are analyzed. Combined with the multiple spectra resulted by the pixel structure of SLM, a denoising method based on spatial average is proposed. The result shows that the new method is effective in reducing some part of noise and retaining image details.
出处
《光电子技术》
CAS
2008年第2期97-100,共4页
Optoelectronic Technology
基金
国家自然科学基金资助项目(60472037)
关键词
信息光学
4f系统
空间光调制器
图像噪声
去噪
information optics
4f system
spatial light modulator
image noise
denoise
