Create a bandpass to remove horizontal high frequency

Hi everyone, I have an image and I want to remove the horizontal high frequency from it (i.e. the vertical stuff from the image), how do I create such bandpass filter ?

Thanks everyone!

Answer 1

[Image Analyst]

See my Fourier filtering demo where I put in a ripple then filter it out. Adapt it to your particular image.

[J.L. Jones]

Thanks, I've tried but I've a problem. What I got now is just two thin line horizontally (as I want to remove vertical things)... however the result I have is a very dense checkboard like result, do you have an idea of what's the problem ?

[Image Analyst]

I'm guessing that you simply zeroed out the wrong frequencies. It would be best if you attached your image and code.