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Hello there,


as I recently mentioned in the FuzzyOcr Thread, I found quite a lot
mails that contain broken or corrupted gifs.

I found one type that lets convert calculate extremely long and then
fails, but with giftopnm it works after it spits out some errors.

The other type doesn't work with both, they both say the image is
corrupted and don't convert anything, but my browser is fully able to
view it. (And yes, I made sure these are really gifs, file says so)


Here's an example:

samples # giftopnm viagra2.gif
giftopnm: EOF or error reading data portion of 194 byte DataBlock from
file

samples # convert viagra2.gif pnm:-
convert: Corrupt image `viagra2.gif'.

samples # file viagra2.gif
viagra2.gif: GIF image data, version 89a, 353 x 262


But I can view it perfectly. Does anyone know what this could be
caused by and a tool which can reliably convert these to pnm?

Another question that I would have in mind is, if that was intended to
happen...

Best regards

Chris
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