Editing multiple coin pics at once

Discussion in 'Digital Cameras' started by Eric Babula, Nov 2, 2005.

  1. Eric Babula

    Eric Babula Guest

    I have a bunch of pictures that I took of some coins that I would like
    to put up on ebaY for sale. With my Panasonic FZ5, each digital file
    (.jpg) ends up being right around 2MB. Obviously, 4MB (one pic of
    obverse and one of reverse of each coin) of pictures would be a bit much
    for each ebaY auction.

    Is there a quick and easy way that I can batch edit all these files at
    once, in order to reduce them to about 25% (or maybe less) of what they

    Eric Babula, Nov 2, 2005
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  2. IrfanView has a batch mode, and can resize photos.

    David J Taylor, Nov 2, 2005
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  3. Eric Babula

    Dave Hinz Guest

    Got access to a unix/linux/Mac system, Eric? Imagemagick does a great
    job of converting images, and I have a shell script which automates it.
    If you are on a *nix box, do:
    which convert

    If something comes back, you've got imagemagick already and my script
    should work as written for you. I think imagemagick also runs in
    Windows but I have no direct personal experience trying to get that
    particular pig to dance.
    Take a look at those images - even the thumbnails are great plenty
    readable. I can give you my .jpg parameters if you're on windows so you
    can save it the same way, or I will be more than happy to share my
    script to generate pages as above for anyone who asks for it.
    Basically, you get a thumb, a midsize, and a full resolution scan.

    You can get a surprisingly good thumbnail image of a coin for 6 or 8 KB,
    the two thumbnails on the above link are 6.5K and 7.3K bytes. Certainly
    good enough for a gallery image, and I use them as the primary
    front&back images on my auctions and store listings.

    Dave Hinz
    Dave Hinz, Nov 2, 2005
  4. Eric Babula

    Eric Babula Guest

    Thanks, David - I'll check into how to do batch editing with IrfanView.
    I already do have that one installed.
    Eric Babula, Nov 2, 2005
  5. Eric Babula

    Eric Babula Guest

    I have, but haven't learned yet, Adobe Photoshop Elements, which will
    probably be my main picture editor. To view pictures, I usually use
    Micro$oft Photo Editor - just faster than Adobe PE. I also have
    IrfanView, Adobe Photoshop Album 2.0 Starter Edition, and a few picture
    editors that came with some of my Genealogy programs. I don't use the
    latter, though.

    I won't be using a scanner for many of my coin pics. Scanners just don't
    pick up on the color and luster of a coin very well. They might do well
    for circulated coins, but not for bright, shiny or colorful uncirculated

    Thanks for the tip about the camera, though. I already have about 300
    pictures taken, so I just want to post-picture edit them. But, for
    future shots, I'll have to see what the camera settings will do to the
    pics of the coins.
    Eric Babula, Nov 2, 2005
  6. Eric Babula

    Eric Babula Guest

    Dave - I do not have Mac/Unix/Linux - I'm a slave to the PC, with Micro
    $oft Win2000 and WinXP, depending on where I am at the time. Does
    Imagemagick work for the Windows system? Anyone know?

    I'd love to test it out, and test out your script, if possible.
    Eric Babula, Nov 2, 2005
  7. Eric Babula

    Dave Hinz Guest

    ....seems to indicate yes. I'd get the static version rather than the
    one that relies on DLLs if it were me.
    Unless you're savvy with cygwin, my bourne shell script probably
    wouldn't do you a lot of good. But, here's the meat of it:
    convert -geometry 1024x1024 -quality 75 "$i" 1k-"$i"
    convert -geometry 250x250 -quality 50 "$i" thumb-"$i"

    So, the first makes a 1024x1024 jpg of the file ($i) to a file that
    prepends a "1k-" to the name, at a jpg quality of 75. If it's smaller
    than 1024x1024 to begin with, then the "midsize" image is actually
    bigger, as in the example with the quarter.
    The second "convert" line makes the images that show up directly on that
    link - a 250x250 (doesn't have to be square, it won't distort the image,
    but that's the biggest it will be) at a quality of 50, with thumb-
    prepended to the name.

    The rest of the script renders the HTML for the pages, handles the
    "click here to see a higher-resolution version" logic and all that.
    If you want it you can have it but I have no idea if it could work in

    Dave Hinz
    Dave Hinz, Nov 2, 2005
  8. Eric Babula

    alex Guest

    Before you reduce them in size too much, have you tried reducing to 16 bit
    colour rather than the 24-bit the camera took them in, in order to reduce
    their file size.

    Or is it actual size reducton (in pixels) you need to achieve.

    alex, Nov 2, 2005
  9. Eric Babula

    linxlvr Guest

    Cool!! TY for the post. :)
    linxlvr, Nov 3, 2005
  10. Eric Babula

    Sheldon Guest

    If you are using XP, Microsoft makes a program in Powertoys called Image
    Resizer. It's free at the Microsoft site, and you can work directly from
    thumbnails. It also leaves the original image alone and creates a copy. If
    you can't find it drop me an e-mail and I'll send it to you.

    Sheldon, Nov 3, 2005
  11. Eric Babula

    Perk Guest

    You might also look at Irfanview, it has a batch function for a number
    of operations.

    As with Sheldon's suggestion, it's free.

    Perk :)>)
    Perk, Nov 3, 2005
  12. Eric Babula

    Eric Babula Guest

    I tried IrfanView last night, and it worked great! Thanks, all, for the
    Eric Babula, Nov 3, 2005
  13. Eric Babula

    Dave Hinz Guest

    Well, Irfan does accept paypal donations for his fine product, so if
    it's useful, kick him 5 bucks or something by paypal. Seems to be a
    nice guy, and he makes a good program. Never hurts to encourage that
    sort of thing...
    Dave Hinz, Nov 3, 2005
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