近场光学扫描显微镜中的信号处理

Signal Process In Scanning Near-field Optical Microscopy

在近场光学扫描显微镜中 ,由于扫描方式的原因 ,使得输出的数字图像中存在着随机性的行噪音 ,采用传统的滤波方法无法有效的去除这种行噪音 ,本文提出了空间域的自适应迭代处理和小波分析相结合的方法来处理这种行噪音 ;为了使图像增强 ,提出了分段线性伪彩色变换处理的方法 ,它可以使图像内微妙的变化变得更为可见 ;

There are random row noises in output digital image of near field optical scanning microscopy because of the scanning way.To adhibit traditional method of filtering the waves cannot effictively wipe off such row noises.This paper presents a method which combines adaptive iterration and wavelet analysis to filter row noises.The method of subsectional linearity pseudo color transformation is presented for emboldening image.The fitting of curve surface is adopted for filtering slowly change row noises added in signal.