At 12:36 AM +0100 9/18/10, Ashley Sheridan wrote:

I know this is getting a little off-topic here, but surely the way a
jpeg destroys data in an image would destroy the stenography information
too? To the human eye all would appear normal, but the copyright info
would be lost?

I don't know much about this sort of thing, so I'm making assumptions

It's the difference between lossless and lossy compression. The first meaning no loss in data and the second is loss of data. PNG and jpeg is lossless whereas gif is lossy.




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