Filter Vertical Structures

[Ketov]

Hello everybody,

I have got a spectrogramm and want to delete the vertical structures (caused by drums etc.) but keep the horizontal structures.
I am working with Matlab and could iterate maybe through the whole picture and try to find the structures maybe by comparing fields, but is there any efficient/easier method?

Thanks in advance!
: http://imgur.com/Ou5JUeL

[snibgo]

I don't know what you want to remove. Could you put up a version with red rings around whatever you want removed?

[fmw42]

All your structures are horizontal. Just that some align vertically.