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Thread: Suggestions for restoring damaged old map

  1. #1
    Senior Member routlaw's Avatar
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    Suggestions for restoring damaged old map

    I am in the process of restoring a century old map/drawing but am stumped on how to effectively eliminate some of the stains from scotch tape (yes they really did that) spills etc. Some ten or so years ago seems like I used a method dealing with the different color channels in red that was quite effective and an almost complete semi-automated fix. Can't remember (or was it my imagination) for the life of me how to do it again though.

    Anyone else have any experience with this? Thanks in advance.

    Rob

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    Senior Member viablex1's Avatar
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    Re: Suggestions for restoring damaged old map

    well did you fix it?

    would love to see the pic

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    Senior Member routlaw's Avatar
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    Re: Suggestions for restoring damaged old map

    Quote Originally Posted by viablex1 View Post
    well did you fix it?

    would love to see the pic
    Not yet, got busy with some other small projects and put this one on the backburner for a few days. I hear Katrin Eismann has written an excellent tome on retouching this sort of thing, might have to pu a copy.

    Its actually a pretty cool old map of our area but man was it ever in bad shape. Have repaired a lot of it but still have a ways to go.

    Rob

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    Sr. Administrator Jack's Avatar
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    Re: Suggestions for restoring damaged old map

    It might help to see some examples of the damage you're trying to repair. I've done significant repair work on old photographs, but not specifically a map or very many written documents.
    Jack
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    Senior Member routlaw's Avatar
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    Re: Suggestions for restoring damaged old map

    Quote Originally Posted by Jack Flesher View Post
    It might help to see some examples of the damage you're trying to repair. I've done significant repair work on old photographs, but not specifically a map or very many written documents.
    Jack having just written some info about the Canon printer someone was requesting info on, I have to say I got a chuckle out of your quote with Einstein.

    Anyway here is small jpeg of the very large file. Not sure it is large enough for you to really make out the tears etc, but the stains from tape and liquids are fairly obvious. I have been able to repair a lot of this including many of the other tears but this tear under the tape stain combo has me puzzled at least for now.

    Rob
    Last edited by routlaw; 19th March 2012 at 18:51.

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    Sr. Administrator Jack's Avatar
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    Re: Suggestions for restoring damaged old map

    Wow, that's a tough one. I'd be tempted to desaturate it, then edit the bad spots at the pixel level...
    Jack
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    Super Moderator Cindy Flood's Avatar
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    Re: Suggestions for restoring damaged old map

    I copied it and worked with it a little in Photoshop. I used the magnetic lasso and clicked around the tape stain. Then using curves, I pulled the curve up (pick the spot where the histogram is peaked). You then need to select the blue channel and pull up the blue just a tiny bit to neutralize the yellow. It gets you pretty close. Deselect. Choose the clone stamp and work out the tear at the pixel level.
    Have fun!

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    Senior Member routlaw's Avatar
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    Re: Suggestions for restoring damaged old map

    Quote Originally Posted by Jack Flesher View Post
    Wow, that's a tough one. I'd be tempted to desaturate it, then edit the bad spots at the pixel level...
    Yep, you got that right. Its been the hardest restoration I have yet to work on. For now I wanted to hold off on any color work at all thinking I might be able to use those color channels effectively in some way.

    Quote Originally Posted by Cindy Flood View Post
    I copied it and worked with it a little in Photoshop. I used the magnetic lasso and clicked around the tape stain. Then using curves, I pulled the curve up (pick the spot where the histogram is peaked). You then need to select the blue channel and pull up the blue just a tiny bit to neutralize the yellow. It gets you pretty close. Deselect. Choose the clone stamp and work out the tear at the pixel level.
    Have fun!
    Thanks Cindy thats pretty much what I have been doing more or less thus far on some other tears, and stains. It works but with some caveats, yet it might be the solution I have to implement to finish this one up. Its a slow go to say the least using selections, and minute pixel level editing.

    Anyway thanks for the suggestions.

    Rob

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    Super Moderator Cindy Flood's Avatar
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    Re: Suggestions for restoring damaged old map

    I went around the stain pretty quickly with the magnetic lasso. Once you use curves and get your colors matching, you can use the patch tool to work on the tear. That tool really works easy and fast. You will have to use the clone tool when you get to the sections with houses and more detail....that will be the slowest part of the repair.

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