Preflight for index color help

Hi, our RGB to CMYK conversion process does not like greyscale images in indexed colour mode, which is the way Quark converts them in it's PDFing process. Customer can't convert to ID, so I'd really like to create a Preflight Profile to provide them to identify future occurrences, but can't find a rule segment that does this. Customer doesn't have PitStop, so Acrobat prefllight appears to be our only hope. Any guidance on how to achieve this would be greatly appreciated. Thanks,
Mike

Andrew, thank you very much for your reply. We already apply a 3 stage processing to our Web Press jobs (didn't mention that in my earlier post), regular Acrobat Preflight, RGB > CMYK conversion in either one of 2 tools and then GCR in a Alwan product. Could build an un-index into our RGB>CMYK PitStop process, I suppose. This element seems unique to this customer, and we were  hoping to use this as a teaching tool on their end. Will look into adding into PitStop action list with the operators. Thanks again,
Mike

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  • Indexed color / differences in dimension

    Hi!
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    15 0 obj
    [/Indexed/DeviceRGB 2 18 0 R]
    endobj
    And why is it not possible to color manage indexed colors?
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    Simone

    with regard to color managing Indexed color - I can't see a reason why that should not be possible. At least callas software's pdfColorConvert simply does color conversions for Indexed color as well...
    Whether Indexed color is used (as opposed to specifying color values directly) is up to the software writing the PDF. Most often Indexed color is found for images where only 256 or less different colors need to be addressed (like in duotone images). I have nevertheless seen use of Indexed color for grayscale (where it does not make a lot of sense as there would be max. 256 different gray values anyway, at least for 8 bit color) and even for bitmap images, and also for vector objects (where again Indexed color does not add any value). On the other hand - Indexed color does not do any harm (besides using a few unnecessary bytes).
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    callas software

  • Preflight warnings for registration color -- how to avoid?

    In preflighting, is there any way to turn off registration color and font color warnings when checking for spot colors and non-CMYK colors?
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    Thanks.

    Non-CMYK elements are flattened (if necessary) and converted to CMYK using the fixups, but then they have to be proofed carefully for problems, so it isn't anything we want to add to the routine unless absolutely necessary.
    ===
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  • Hi all, where can i get a good refrence for Indexing for Tables..... HELP!

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    Saurabh

    Thanks Mamta.........
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    [http://help.sap.com/saphelp_nw70/helpdata/en/cf/21eb20446011d189700000e8322d00/content.htm]

  • DCTDecode filter used for image with Indexed color space?

    I've seen examples of images in PDF that have BitsPerComponent=8, with an Indexed Color Space, but the filter is DCTDecode.  This doesn't seem intuitive to me, as JPG supports 24-bit RGB and 8-bit gray.  I haven't heard of 8-bit color JPG so I'm just wondering how this is done?
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    Please note, I understand that it's not an actual JPG file, that the data is only using the compression scheme.

    DCTDecode is entirely legal for 1-component (greyscale) samples as you've noted. There is no problem there.
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    In most cases of Indexed colour, this would lead to random and useless changes to colours. But it is entirely possible to have colours which map into a linear and smooth set of shades of the same colour - such as 256 shades of pink. An image using such an Indexed colour space is a candidate for using DCTDecode.
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  • Time Machine hangs at Waiting for index to be ready...help!

    Installed widget, copied messages. Searched forum and google for answers, still can't figure it out.
    Any ideas? - Thanks, Paul
    Starting standard backup
    Attempting to mount network destination using URL: afp://Paul%[email protected]/Time%20Capsule
    Mounted network destination using URL: afp://Paul%[email protected]/Time%20Capsule
    QUICKCHECK ONLY; FILESYSTEM CLEAN
    Disk image /Volumes/Time Capsule/Paul's Mac_001f5bf5d5b8.sparsebundle mounted at: /Volumes/Backup of Paul's Mac
    Backing up to: /Volumes/Backup of Paul's Mac/Backups.backupdb
    Event store UUIDs don't match for volume: Macintosh HD
    Waiting for index to be ready (100)
    Waiting for index to be ready (100)
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    Okay, still no progress on getting my Time Machine working again. The last backup was 12/2, so I've been trying for 4 days to get it going. Any other ideas?
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    QUICKCHECK ONLY; FILESYSTEM CLEAN
    Disk image /Volumes/Time Capsule/Paul's Mac_001f5bf5d5b8.sparsebundle mounted at: /Volumes/Backup of Paul's Mac
    Backing up to: /Volumes/Backup of Paul's Mac/Backups.backupdb
    Event store UUIDs don't match for volume: Macintosh HD
    Waiting for index to be ready (100)
    Waiting for index to be ready (100)
    Waiting for index to be ready (100)
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  • Eyedropper not working in index color on Mac

    I recently changed from MAC 9.1 and photoshop 7 to a 24" IMAC and photoshop CS3. I have 3 gig ram -- operating system 10.4.10. I can't get the eyedropper to work in index color in CS3. I've talked with someone else who has a PC and it is working on the PC. I called Adobe and it is working on their PC's too. I went to the Apple Store and it isn't working on their MAC. So I am assuming either the eyedropper isn't working on the MAC or I don't know how to get it to work in CS3.
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    Carol,
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    I printed out your post and followed the steps you outline.
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    Just to make sure, I opened the Help viewer and followed the instructions therein:
    Color / Converting between color modes
    Customize indexed color tables
    The Color Table command lets you make changes to the color table of an indexed-color image. These customization features are particularly useful with pseudocolor imagesimages displaying variations in gray levels with color rather than shades of gray, often used in scientific and medical applications. However, customizing the color table can also produce special effects with indexed-color images that have a limited number of colors.
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  • Animated gif color help

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  • URGENT FIX MY Connect Four game for Wednsday PLEASE HELP

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    if(column==4)
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    if(column==5)
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    place6--;
    if(column==7)
    place7--;
    }

    gamefreak1192 wrote:
    I am using an APPLET and i want to use JOptionpane it didnt work when i used it in the paint method. So i want to make a runner to make the program work. I don't know why the Graphics g = new Graphics isnt working PLEASE HELP. Email the revised code to my email at [email protected] URGENT FOR TOMORROW PLEASE HELP. should i have a spearate class for the runner, just email me please if you can help.
    This is bloody ridiculous. You want somebody to do your work for you, you can't be bothered to carry on a discussion here and ask for private email, and you expect somebody else to make your urgency (i.e. lousy time management) their problem. You got big brass ones, kid.

  • How can i open the "Convert to Indexed Color" dialog with custom presets?

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        desc2.putDouble(app.stringIDToTypeID("a"), 0.86);
        desc2.putDouble(app.stringIDToTypeID("b"), 0.31);
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        desc3.putDouble(app.stringIDToTypeID("a"), 54.59);
        desc3.putDouble(app.stringIDToTypeID("b"), 49.85);
        desc1.putObject(app.charIDToTypeID('Mxm '), app.charIDToTypeID('LbCl'), desc3);
        desc1.putInteger(app.stringIDToTypeID("colorModel"), 0);
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        var desc4 = executeAction(app.stringIDToTypeID('colorRange'), desc1, dialogMode);
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    Is there some kind of "lookup table" for char and string IDs?
    Thank you guys in advance! This forum has been a great help many times.

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