A method and apparatus for removing curtain noise from FIB-SEM images

The invention provides a method and apparatus for removing curtain noise from FIB-SEM images, which relates to the technical field of image processing. The method includes: putting the FIB-SEM image sequences to be processed are divided into several groups according to the changes of main mineral components. In each group, selecting key slice images to be divided into different gray-scale regionsto form band-stop filters for each gray-scale region, and determining the parameters of each band-stop filter, obtaining the filtered image corresponding to each band-stop filter; forming a noise reduction processing image corresponding to the key slice image; when the noise reduction effect is qualified, recording the parameters of the gray range region and the band-stop filter and applying to the first and last slice images of the slice image group where the key slice image is located, if the noise reduction processing effect is qualified, applying the parameters of the gray range region andthe band-stop filter to t