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  1. #1
    5 Star Lounger
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    Making scans equal

    Scanned a (large) photo-album; there was some type of automatic color correction / enhancement enabled. As a result; some scans are somewhat overcorrected. The pages on which the pictures were (so in fact the backgrounds) are (and should be) of course all the same. In these backgrounds there is next to a bit yellowish-white paper also reddish and blue-ish accents.

    Using a drawing package like e.g. PaintShop Pro; can I (and if so, how do I) apply a color scheme to all pages that will make them all the same (based on a certain setting I choose for the common background)?

    Any suggestions are appreciated; I'm not experienced at all in this to be honest; so maybe I'm asking a very simple question here.

    Tnkx,

    EJ

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    Re: Making scans equal

    Let me take a stab at answering your question, If I understand it correctly. You can change the background (page color) on your images, but you will have to do it on an image-by-image basis. For example, using the terminology for Photoshop, click on image, adjustments, replace color. The resulting window lets you select the color to be changed with an eyedropper tool and you would select an area showing the paper background. Then using the fuzziness setting you specify which colors immediately adjacent the the selected one (in color space) you want to replace as well. This is part of the custom work you will have to do on each image. Finally, you specify the color you want it replaced with and all selected colors are changed. You would do the same with each photo, always using the same replacement color.

    Each photo manipulation program may have slightly different versions of the above sequence and that may be why you have no other responses to your query - It is hard to describe in general terms. I do not know of a good way to perform the exact same operation on each image to get the result you want. That is, I am not aware of an automated or batch process to fix your problem. To show what is possible with the approach I outlined, I quickly manipulated a photo of a local lighthouse and changed the appearance of the sky as shown below.

    Paul
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  3. #3
    Uranium Lounger
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    Re: Making scans equal

    I don't believe that there is any program that will create a "common background" for all the images.

    If what you are saying is that you have what amounts to stains on several or all of the scanned images in their background, and it's not affecting the images, then probably the fastest way to fix this is to use the Selection tool to select the "stains", then use the Dropper tool to select the color of the background to match and then use the Fill tool to fill the selected area with the chosen color. You will have to do this on an image-by-image basis.
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  4. #4
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    Re: Making scans equal

    I would take a slightly different tack than Paul or Doc on this, at least to start with. It seems to me that to achieve "common" scans is a function of your SCANNER and its driver software or its interface to Windows Twain (whatever that is). I am far from an expert on the "art" of scanning, but it does seem to me that the primary place to control the resulting image that ends up on your drive is with the scanner, first and foremost. What model and type of scanner are you using? When you preview the scan, you should be able to crop out any unwanted background to at least get an image that contains ONLY the photo you want to see. THEN, it will be up to your knowledge, skills and "playing around" with PSP or Photoshop or whatever. A little more detail about your scanning might help us to advise you. Hang in there!

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    Re: Making scans equal

    You have a very good point Al if he wants to do it over. In reading his question I inferred that the scanning (and a lot of it) had taken place with auto adjustments on and not wanting to rescan he wants the backgrounds to be all the same just as they were in the photo album. The other point is (and I am inferring again) that a page of the photo album contains numerous photos and the space between them is the background paper that he wants to be the same color on all the scans. You cannot crop that out.

    Paul

  6. #6
    Uranium Lounger
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    Re: Making scans equal

    I was under the same impression as Paul, that rescanning was either too tedious or not an option. I agree that the scanner is the place to start and use the scanner's software to "fix" the image.

    I disagree with Paul's statement that you can't crop out the background. It's a simple process using the scanner software and there are a couple ways to do that with PSP. One involves using the Magic Wand tool and then Select All & Inverse commands. This less than certain to work well. The other is very tedious and involves cropping out the images one at a time, saving them after cropping and then stepping back or undoing the cropping and then cropping the next image out and saving it.
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    Plutonium Lounger
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    Re: Making scans equal

    I guess we'll have to wait and see what EJ's reaction to all of this is, huh? One way or t'other, the business of scanning is certainly NOT an exact science, is it?

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    Uranium Lounger
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    Re: Making scans equal

    Not even close !!! <img src=/S/hmmn.gif border=0 alt=hmmn width=15 height=15>
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    Re: Making scans equal

    Doc,
    We may have a definition difference. In my comments I used "crop" in what I believe is its common definition. Cropping is a pixel discarding operation in which a single rectangular path is placed and sized on an image in such a way that all pixels inside the rectangle are kept and those outside are discarded. Indeed this is a common feature of scanning software. The arrangement in the query involves multiple photographs on a single scrapbook page. While you can crop that scanned image all of the areas between the photos cannot be cropped. It is also true that several operations, one of which you describe, can select an area and modify its pixels, but this is not a pixel discarding operation. It is a pixel modifying operation and thus not a crop. I have never seen an area selecting and modifying function in scanner software, but that, of course, does not mean it does not exist. <img src=/S/shrug.gif border=0 alt=shrug width=39 height=15>

    Selecting and modifying all the areas between arbitrarily placed photos would be a tedious process, but a possibility. The recoloring option I mentioned eliminates most of that work, but its success depends on where and how much the colors of the image were changed during the scanning process.


    Paul

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    Re: Making scans equal

    I have done 4 albums and all were the older BLACK page type. I scanned the full page (had to do it twice and then stitch them together) and then, I "Cropped" each out to it's own image. I did NOT find that the back ground was different, but I do use and "Auto" tweaking, I like to clean them up myself.

    Here are a few of my results
    http://www.schmeckabernathy.com/PhotoAlbums/CEA-album/
    http://www.schmeckabernathy.com/PhotoAlbums/LRAA-album/

    Now running HP Pavilion a6528p, with Win7 64 Bit OS.

  11. #11
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    Re: Making scans equal

    Nice work Dave, Thanks for sharing the albums.

    Paul

  12. #12
    Uranium Lounger
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    Re: Making scans equal

    I think you're correct Paul. It's a difference of definition. But the bottom line is that there really is no "easy" way to do this.
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    Re: Making scans equal

    Great, I'm impressed by the quick and complete reactions. I feel maybe there's a need to better describe what I'm looking for, here's an attempt to further clarify...

    Yes, I have scanned the images (my scanner is a Canon 4400F) and I had the auto-correction (I believe it's "Restore Colors" on); depending on the scan, this alters the overall image. As I'm scanning a photo album, the paper isn't just white but has a yellowish tint to it and there are light red and blue motifs on the background too. Again; depending on the photo's attached to the page, the correction ("Restore Colors") changes the color-curves for each scan.
    Where the overall picture might be better 'balanced' (personally I didn't always like it); the background changes from scan-to-scan as a result of this.

    Of course, I am learning from this and next time, certainly for a series of scans, I'll turn any auto correction off. I did a lot of scans and re-doing is not really an option I want to pursue...

    As I know the constant factor in all my scans, the background, I thought/believed/hoped I could find a way to make that appear the same on all scans, which basically would then 'undo' the individual corrections.

    I'm using PaintShopPro and hope there's a simple way to do that (again, I have more colors than just the paper as there are colored accents as well - I've added an example - yes, it's an old baby-photo-album).

    By the way, my goal is to leave the pages intact; no cropping etc. If I'd ever want an individual picture, I'd crop it out and individually optimize that.

    Makes sense?
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    Re: Making scans equal

    Ok, I would vote for trying the replace color method I mentioned above. I do not have paint shop pro (PSP) , but the replace color is in Photoshop Elements a direct competitor to PSP so I expect it is there as well. Select the place where you want the color to change, at the tip of the red arrow below, for example, select the resultant color (and this will be the same for all of your scans) and click OK. See how it works .


    Paul
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  15. #15
    Uranium Lounger
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    Re: Making scans equal

    Could you attach a screenshot of one of the "problem" areas so we might see what exactly you are talking about ??? With all the decorations on that page it might not be an easy task to get rid of the "junk" and keep the good.

    Again, there is really no way to correct one and have it apply to all the images. Neither in the scan process or by editing.
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