Detecting CYMK jpeg images

[Richmond Mathewson]

First time I posted this the bottom got lopped off!
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Richmond's crude method:

Ben Rubinstein sent me 2 jpegs: one RGB and one CMYK,

I imported them into a stack with 2 buttons ('INFO' and 'INFO') and
one field ('fINFO'): button 'INFO' had this script:

on mouseUp
  put the imagedata of img "revbannerRGB.jpg" into fld "fINFO"
end mouseUp

button 'INFO 2':

on mouseUp
  put the imagedata of img "revbannerCMYK.jpg" into fld "fINFO"
end mouseUp

- rocket science :) -

now the imageData for the RGB image is the expected load of
 "goobledegook", however the imageData for the CMYK image is
very odd indeed; consisting of hundreds of regular characters
preceded by a '¬'.

Now all you need is to look for the '¬' sets to know that your imported JPEG is CMYK rather than RGB.

sincerely, Richmond Mathewson.

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A Thorn in the flesh is better than a failed Systems Development Life Cycle.
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