Topographic map save topo lines only

[dhborchardt]

I have a topograpic map that I want to create a transperency. I have scanned then map and am trying to remove everything except the roads and topograpic lines. I am basically familiar with photoshop.

 

[docilebob]

More info might draw more helpful responses. What else is there to be removed ?Is it a large map ?Can we see it ?
In any event, sounds like a major project involving alot of tracing with the pen tool.

 

[sPECtre]

Welcome to PsG!
Or careful selections, using select>color range, maybe? seeing an extract of the map might help us help you!

 

[Gaussian]

Welcome to PSG dhborchardt. 8))

Can you show us an example?

 

[dhborchardt]

Sorry for not providing a sample. Here it is and thanks for the help so far.

 

[docilebob]

This was just a quickie using the magic wand at a setting of 10, and about 5 passes.
A little more time and care will produce a cleaner result.

 

[sPECtre]

Good job. A bit of blur+levels, ? la Ka? could be helpful for cleanup. ( http://www.gurusnetwork.com/kpt/tip/4/ )

 

[dhborchardt]

Thanks!

 

[docilebob]

No problem, dhborchardt . We live to help.