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how to "corrupt" the binary of a jpeg file?

i'm from paris and i study graphic design.i'm not familiar with jpeg compression, decoding... i had few searchs on google though.
i would like to learn how to manipulate the binary code of a standard jpeg file for visual, aesthetic, "artitistic" purposes for a new project.
is there any way, program, to read the "heart" of an image and rewrite it to "corrupt" the file, to give it a new aspect? i mean transform it from the inside, no photoshop & co...?
Nov 28 '09 #1
2 6987
9,735 Expert Mod 8TB
A friend of mine took a course on this in university.

It's a lot harder than you think. Unless you have a very strong programming background and you have a concrete understanding about how to manipulate images (there's a lot of math involved) then I would recommend that you stick with using something like Photoshop or gimp :)

Dec 1 '09 #2
5,000 Expert 4TB
If you don't care about the data, just use a random number generator and insert random values randomly throughout the file. Just make sure you respect the JPG file format (http://en.wikipedia.org/wiki/JPEG) so that you don't corrupt valuable header information or it wont open properly.
Jan 11 '10 #3

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