The quickest way IMO is to use Levels.
Image > Ajust > Levels
Drag the right-hand slider over towards the left a bit and all your coloured
artifacts should disappear.
You may find that you lose clarity of the text, though; if this is the case,
duplicate the layer and set the new one to Multiply and play with the
opacity.
HTH
"El Senor" <ilovebritishbeef@yahoo.com> wrote in message
news
KIXa.9706$W%3.747@nwrdny01.gnilink.net...
> The background of this UPC code should be white:
> http://mysite.verizon.net/verizon_ac..._scan_back.jpg
>
> As you can see, it is unfortunately rainbow colored, artifacts
> introduced by reflections off the glass of my crappy scanner. Is there
> any easy way to whiten the kalidescope background?
>
> Thanks,
> -Mike
>
>