Welcome to the Invelos forums. Please read the forum rules before posting.

Read access to our public forums is open to everyone. To post messages, a free registration is required.

If you have an Invelos account, sign in to post.

    Invelos Forums->DVD Profiler: Contribution Discussion Page: 1 2  Previous   Next
Cover Scans What dpi?
Author Message
DVD Profiler Unlimited RegistrantStar Contributorninehours
Registered: April 3, 2007
Reputation: High Rating
United Kingdom Posts: 1,998
Posted:
PM this userDirect link to this postReply with quote
What resolution do you scan your DVD covers i have been using 240dpi has this seems to give the best compromise between quality and file size for uploading. Is there an official dpi you should use?
DVD Profiler Unlimited RegistrantStar ContributorTracer
Registered: March 13, 2007
United States Posts: 951
Posted:
PM this userView this user's DVD collectionDirect link to this postReply with quote
Here's the offical on cover scans DPI

  • Image size must be at least as large as the existing online covers. If you don't have a premium registration, you will be unable to verify this. Therefore, submit only images you have personally scanned at 100 DPI or higher.

  • If you scan images for your personal database at a quality that are higher than 100 DPI, you may still submit them. If accepted, they will automatically be downsized for inclusion in the main database.
  • Are you local?
    This is a local shop the strangers you would bring would not understand us, our customs, our local ways.
    DVD Profiler Unlimited RegistrantStar ContributorSquirrelecto
    Registered: March 13, 2007
    United Kingdom Posts: 793
    Posted:
    PM this userView this user's DVD collectionDirect link to this postReply with quote
    100dpi is too low for reading the smaller detail on covers, even after sharpening,  so I scan at 150dpi. That's high enough for my needs in my own database and good for keeping the backup still within a reasonable size for removable media.
     Last edited: by Squirrelecto
    DVD Profiler Unlimited RegistrantRossRoy
    Registered: March 13, 2007
    Posts: 793
    Posted:
    PM this userDirect link to this postReply with quote
    And don't forget that for online purpose, the cover will be resized to 500x700 pixels, and recompressed if the file is bigger than 200KB*


    *I'm not 100% positive it is 200KB, but I think I remember Ken saying it is 200KB to trigger the recompression.
     Last edited: by RossRoy
    DVD Profiler Unlimited RegistrantStar ContributorWinston Smith
    Don't be discommodious
    Registered: March 13, 2007
    United States Posts: 21,610
    Posted:
    PM this userEmail this userView this user's DVD collectionDirect link to this postReply with quote
    I have been doing covers at 800DPI for two years now, up from my old standard of 300.

    Skip
    ASSUME NOTHING!!!!!!
    CBE, MBE, MoA and proud of it.
    Outta here

    Billy Video
    DVD Profiler Unlimited Registrantdirk_steitz
    Registered: Jan 31, 2001
    Registered: April 5, 2007
    Germany Posts: 17
    Posted:
    PM this userView this user's DVD collectionDirect link to this postReply with quote
    I scan at 300 dpi but resize to approx. 500x700px before submitting the image.

    Dirk
    DVD Profiler Unlimited RegistrantFredLooks
    phpDVDProfilerDude D5/7/2
    Registered: March 13, 2007
    Canada Posts: 350
    Posted:
    PM this userEmail this userVisit this user's homepageView this user's DVD collectionDirect link to this postReply with quote
    Just to ensure that we're all talking about the same thing, my understanding is as follows:

    a standard Front or Back DVD Cover is 5.12 inches wide and 7.25 inches tall
    Scanning at 100 DPI would yield an image 512 pixels wide and 725 pixels tall.
    Scanning at 200 DPI would yield an image 1024 pixels wide and 1450 pixels tall.
    Scanning at 300 DPI would yield an image 1536 pixels wide and 2175 pixels tall.
    Scanning at 800 DPI would yield an image 4096 pixels wide and 5800 pixels tall.

    Similarly, an image that is 800 pixels wide and 1132 pixels tall would be 156.25 DPI, which doesn't indicate that it was scanned that way, but means that if you wanted to print it and have it be the same size as a DVD cover, you would need to print it at 156 DPI, or somehow mark it as a 156 DPI image.
    -fred
    DVD Profiler Unlimited RegistrantStar ContributorRHo
    Registered: March 13, 2007
    Posts: 2,759
    Posted:
    PM this userDirect link to this postReply with quote
    I scan covers at 400 dpi (optical resolution of my scanner) and crop them in that resolution. Afterwards I resize them to fit into 1000x1400 pixels (double the size of the online database). In that resolution I do the image processing like colour correction and submit them in this size. The online system will downsize them to the final 500x700 pixels.
     Last edited: by RHo
    DVD Profiler Unlimited RegistrantVibroCount
    The Truth is Silly Putty
    Registered: March 13, 2007
    Reputation: High Rating
    United States Posts: 5,635
    Posted:
    PM this userEmail this userVisit this user's homepageView this user's DVD collectionDirect link to this postReply with quote
    Quoting dirk_steitz:
    Quote:
    I scan at 300 dpi but resize to approx. 500x700px before submitting the image.

    Dirk


    Yup -- no larger than 500 or 700... That way, what you submit is exactly what comes out.

    If submit anything larger, the automatic controls take over and who know what comes out.

    'Tis best to keep all larger images local. because a 300 dpi 1500 pixel wide submitted image will lose 2/3rds of its information, and you (the submitter), have no control over how the color, sharpness, moire patterns, etc. will turn out.
    If it wasn't for bad taste, I wouldn't have no taste at all.

    Cliff
    DVD Profiler Unlimited RegistrantStar Contributorliorb22
    This is all a joke.
    Registered: March 13, 2007
    Israel Posts: 693
    Posted:
    PM this userEmail this userView this user's DVD collectionDirect link to this postReply with quote
    My standard is 1200DPI, but that's extremely not recommended. 1200DPI would yield a file size of about 30MB + -
    Of course I always reduce the size before contributing...but in order to do so you need a lot of memory and CPU power.
    October 12th, 1985. Tonight, a comedian died in New York.
    DVD Profiler Unlimited RegistrantStar ContributorSrehtims
    Registered: March 13, 2007
    United States Posts: 1,796
    Posted:
    PM this userView this user's DVD collectionDirect link to this postReply with quote
    Actually it would appear that cover scans are resized to fit into 500X700 pixel rectangle.
    If you check a number of images you have down loaded they are not all exactly 500X700 pixels.
    If you submit a cover that doesn't fit in that little box it be compressed again and more than probable change look of the image.

    That's why an image that may satisfactory to you in your db and on your screen will not look the same to profile reviewers or when downloaded.

    example: a 500X707 pixel image would result in a 495X700 pixel image in the online db.
    We don't need stinkin' IMDB's errors, we make our own.
    Ineptocracy, You got to love it.
    "Nearly all men can stand adversity, but if you want to test a man's character, give him power." - Abraham Lincoln
     Last edited: by Srehtims
    DVD Profiler Unlimited RegistrantVibroCount
    The Truth is Silly Putty
    Registered: March 13, 2007
    Reputation: High Rating
    United States Posts: 5,635
    Posted:
    PM this userEmail this userVisit this user's homepageView this user's DVD collectionDirect link to this postReply with quote
    Quoting Srehtims:
    Quote:
    Actually it would appear that cover scans are resized to fit into 500X700 pixel rectangle.
    If you check a number of images you have down loaded they are not all exactly 500X700 pixels.
    If you submit a cover that fit in that little box it be compressed again and more than probable change look of the image.

    That's why an image that may satisfactory to you in your db and on your screen will not look the same to profile reviewers or when downloaded.

    example: a 500X707 pixel image would result in a 495X700 pixel image in the online db.



    Exactly. Images are resized to fit a maximum of 500 pixels wide or a maximum of 700 pixels wide, with neither being larger than the 500 and 700. So, submitting at 100 dpi, and reducing to fit within a 500 x 700 pixel rectangle will stop the system from making the reduction for you, without your control.

    Scan as large as you like. Store gigantic images locally. But if you submit anything larger than 500 pixels wide or 700 pixel tall, it will be reduced proportionately to fit within that size.
    If it wasn't for bad taste, I wouldn't have no taste at all.

    Cliff
    DVD Profiler Unlimited RegistrantRifter
    Reg. Jan 27, 2002
    Registered: March 13, 2007
    United States Posts: 2,694
    Posted:
    PM this userEmail this userView this user's DVD collectionDirect link to this postReply with quote
    Scan at the highest DPI you can, and the highest bit rate you can.  Also scan to a format that is not "lossy."  Lossy means that whenever you alter something in the picture, including saving, the algorithm will discard any data it doesn't think it needs.  That will affect sharpness, detail, and color depth.  A good choice is to save the initial scan in TIFF format, which is non-lossy.

    Using the large image, make any corrections without saving, then resize to 500x700, and save to JPG format.  When you upload to DVDP, no information will be lost because you are already at the right size.

    My scanner runs at 48 bit color, RGB mode, saved in TIFF format, which yields a picture approx. 1500 x 2200 pixels.
    John

    "Extremism in the defense of Liberty is no vice!" Senator Barry Goldwater, 1964
    Make America Great Again!
    DVD Profiler Unlimited RegistrantVibroCount
    The Truth is Silly Putty
    Registered: March 13, 2007
    Reputation: High Rating
    United States Posts: 5,635
    Posted:
    PM this userEmail this userVisit this user's homepageView this user's DVD collectionDirect link to this postReply with quote
    Quoting Rifter:
    Quote:
    Using the large image, make any corrections without saving, then resize to 500x700, and save to JPG format.


    There are a couple of corrections/filters which look better if you do them after you rescale the image. Sharpness, for one. Sharpening an image, then resizing it, looks less good than the same sharpening after the resizing. But color correction, removing dust & other small flaws, filling in rounded corners, etc. all look better when done on the image before resizing.

    Good plan.
    If it wasn't for bad taste, I wouldn't have no taste at all.

    Cliff
    DVD Profiler Unlimited RegistrantStar ContributorSrehtims
    Registered: March 13, 2007
    United States Posts: 1,796
    Posted:
    PM this userView this user's DVD collectionDirect link to this postReply with quote
    ]sorry clicked on the wrong button.
    We don't need stinkin' IMDB's errors, we make our own.
    Ineptocracy, You got to love it.
    "Nearly all men can stand adversity, but if you want to test a man's character, give him power." - Abraham Lincoln
     Last edited: by Srehtims
    DVD Profiler Unlimited Registrantnuoyaxin
    prev. known as ya_shin
    Registered: March 13, 2007
    Reputation: High Rating
    Taiwan, Province of China Posts: 3,432
    Posted:
    PM this userEmail this userVisit this user's homepageView this user's DVD collectionDirect link to this postReply with quote
    Quoting dirk_steitz:
    Quote:
    I scan at 300 dpi but resize to approx. 500x700px before submitting the image.

    Dirk

    If Dirk's images are made with 300dpi, that that is definetely sufficient. 
    Achim [諾亞信; Ya-Shin//Nuo], a German in Taiwan.
    Registered: May 29, 2000 (at InterVocative)
        Invelos Forums->DVD Profiler: Contribution Discussion Page: 1 2  Previous   Next