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Thread: How to "clean" a JPEG

  1. May 26th, 2001, 09:36 PM #1
    Sezna
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    Question How to "clean" a JPEG

    I think this is sort of an interesting problem. How would one identify useless data in a JPEG file and delete it? You know, stuff that some programs may leave in there?
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  2. May 28th, 2001, 08:57 AM #2
    Jotaf98
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    Look, there is NO useless data in JPGs, they were made to be the smallest possible
    Code:
    Temp = Me.GetIQ()
'Error 9: Overflow
'DON'T PANIC! :eek:

    To learn how to use realistic effects in your games like fire, rain, snow and magic effects, read my article on particles systems here.


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  3. May 28th, 2001, 09:39 AM #3
    Sezna
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    Noooo, lookit here:

    http://www.pppr.sk/rainbow/programs.html#JPG Cleaner

    I want to do this in VB. There are some bytes that need to be deleted and I need to know where they are. Thanks.
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  4. May 28th, 2001, 12:02 PM #4
    parksie
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    Try looking at the JFIF file specification.
    I refuse to tie my hands behind my back and hear somebody say "Bend Over, Boy, Because You Have It Coming To You".
    -- Linus Torvalds
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  6. May 29th, 2001, 12:41 PM #5
    Jotaf98
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    There's another way, you can try downloading that program and using it in a JPG loaded with junk. Then compare it with the original JPG, and see the differences
    Code:
    Temp = Me.GetIQ()
'Error 9: Overflow
'DON'T PANIC! :eek:

    To learn how to use realistic effects in your games like fire, rain, snow and magic effects, read my article on particles systems here.


    Jotaf's Theories!
    "Cats land on their feet. Toast lands peanut butter side down. A cat with toast strapped to its back will hover above the ground in a state of quantum indecision."
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  7. May 29th, 2001, 03:47 PM #6
    Sezna
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    I found the code I want at Planet Source Code. I know the difference in size is barely there, but it's still a nice thing to be able to do.
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