How can I identify the clusters of a grid pattern noise in the modulus of my image Fourier transform and filter out this noise?

1 次查看（过去 30 天）

Spider 2017-4-16

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/335661-how-can-i-identify-the-clusters-of-a-grid-pattern-noise-in-the-modulus-of-my-image-fourier-transform

absFFT.fig

Hi everybody! I'm a newbie using Matlab image processing toolbox. I would appreciate some help to solve my problem or have an explanation about some concepts. I have a DICOM file containing a tagged MRI image. The image has a pattern grid noise overlapped.I'm trying to identify the cluster related to the grid in the modulus of the image FT I've computed(attached below), beasides finding a good frequency filter to remove the grid. My problem is mostly related to the fact I have no idea about the cluster concept. Thanks