Hey, nice thread! You could use the alpha channel (the fourth "color" channel) to embed data, if it's not being used for transparency. Not all img formats support alpha though. Eps, Png and Tiff do, but not jpeg.
One advantage of doing this is that you could tell you customer to just paste you copy protection image into the alpha channel in ie Photoshop, so the image won't need to go through Director in the first place. Then you'd need to use iLingo to look for the special pixel sequence in the alpha channel of the imported img. -A. >Would you be using BinaryIO to check the stego before importing, or >using getPixel after importing? If the latter, would you need an >xtra to make sure the image gets imported at 32-bit even if the >user's display is at 16? > >At 1124 -0600 3/14/2002, Howdy-Tzi wrote: >>... >>1. The program loads a target image file. >>2. The program tries to destego the identifier string. >>3. If it's there, you poroceed happily. Else, you kick up an alert >>talking about wrong formats. > [To remove yourself from this list, or to change to digest mode, go to http://www.penworks.com/lingo-l.cgi To post messages to the list, email [EMAIL PROTECTED] (Problems, email [EMAIL PROTECTED]). Lingo-L is for learning and helping with programming Lingo. Thanks!]
