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在近场光学扫描显微镜以及其他一些以扫描方式工作的系统中 ,由于各种原因 ,致使系统的扫描图象带有较大的行噪音 .在这种情况下 ,采用传统的求平均法以及傅里叶滤波法去除行噪音效果不佳 .本文提出了在空间域的自适应迭代处理和小波分析结合处理行噪音的方法 .由于小波分析可以在时 -频域局部化 ,而且时窗和频窗的宽度可以调节 ,故而可以检测到行噪音信号 ,并实现噪音的定位 ,实验证明效果较好 .
In near-field optical scanning microscopes and other systems that operate in a scanning mode, the resulting scanned image of the system is subject to significant line noise for a variety of reasons. In this case, conventional averaging and Fourier In this paper, adaptive iterative processing in space domain and wavelet analysis are combined to deal with line noise.Wavelet analysis can be localized in time-frequency domain, and the time window and frequency window The width can be adjusted, so it can detect the line noise signal, and to achieve the location of noise, experiments show that the effect is better.