How to remove frequency components in an image

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Jim
Jim 2012-5-9
评论： Image Analyst 2019-2-20
How can I use the fourier transform to find out the frequency components which are responsible for the texture on the surface?
Then I have to remove them to have a smooth surface without texture.
you can see the image in the following link: http://image3243.blogspot.se/2012/05/blog-post.html
Thanks in advance
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Walter Roberson
Walter Roberson 2012-5-10
In one of your duplicate posts, which I have now deleted, Image Analyst commented,
'Like I said in a comment on one of your other numerous posts on this subject: "Jim, you've got to stop the duplicate posts. You do this frequently, and then people like Wayne waste their time telling you how to do a high pass filter when I've already told you that a high pass filter is not the way to go."'

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回答（1 个）

Image Analyst
Image Analyst 2012-5-9
Take the 2D FFT. Look for spikes in the 2D FFT and zero them out. Inverse transform and display.
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Nbillah
Nbillah 2019-2-19
Hi, @Image Analyst, thank you very much for the code, very helpful. I have one question for you i.e how did you decide the value for amplitudethreshold=10.9?
Image Analyst
Image Analyst 2019-2-20
I tried experimenting around with some values and that's just what worked the best.

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