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Photoshop Currency Detection
by Romanpoet at 7:30 am EDT, Sep 17, 2004

As many of you know, modern color copiers/Photoshop detect currency and refuse to scan/open such images. There has been some work in reverse-engineering what algorithms are used to determine what is currency. I am very much interested in expanding this work towards the end of creating false positives. [Think like a T-shirt that when worn would make you difficult to photograph, or artists discreetly embedding such watermarks inside photos that they dont want photoshopp'ed, etc.]

Consider this a call for any comments/knowledge relating to this issue.

Also see: http://www.wildspark.com/eurionize/
http://www.freedom-to-tinker.com/archives/000497.html

RE: Photoshop Currency Detection
by skullaria at 8:21 am EDT, Sep 17, 2004

Once I did a Christmas print that just would NOT print out correctly. It kept looking more blue than the shade of green that I had wanted. The monitor was calibrated. The printer normally didn't have this problem.

I happened by Office Depot later that day, thinking it was my color cartridge. It just happened that an HP rep was there. I explained my problem to him, and he said that HP printers were programmed that if they detected a certain shade of green to dump more cyan in the ink.

I went home, not buying the expensive cartridge. I adjusted the shade of green JUST a bit, and it printed perfectly.

I suppose I'd stumbled onto the color of money.

-K.

Romanpoet wrote:
] As many of you know, modern color copiers/Photoshop detect
] currency and refuse to scan/open such images. There has been
] some work in reverse-engineering what algorithms are used to
] determine what is currency. I am very much interested in
] expanding this work towards the end of creating false
] positives. [Think like a T-shirt that when worn would make
] you difficult to photograph, or artists discreetly embedding
] such watermarks inside photos that they dont want
] photoshopp'ed, etc.]
]
] Consider this a call for any comments/knowledge relating to
] this issue.
]
] Also see: http://www.wildspark.com/eurionize/
] http://www.freedom-to-tinker.com/archives/000497.html

RE: Photoshop Currency Detection
by StankDawg at 4:02 pm EDT, Sep 17, 2004

Romanpoet wrote:
] [Think like a T-shirt that when worn would make
] you difficult to photograph, or artists discreetly embedding
] such watermarks inside photos that they dont want
] photoshopp'ed, etc.]
]
] Consider this a call for any comments/knowledge relating to
] this issue.

I don't know if this qualifies, but I thought if it as I was reading. It is a clear spray that you can put over your license plate that prevents cameras from being able to capture it on film. I found it interesting.

http://www.phantomplate.com/

PhantomPlate
by Acidus at 6:09 pm EDT, Sep 17, 2004

Nice find Stank.

PhantomPlate

Photoshop Currency Detection
by Decius at 10:47 am EDT, Sep 17, 2004

RomanPoet has an interesting request:

Consider this a call for any comments/knowledge relating to this issue.

Also see: http://www.wildspark.com/eurionize/
http://www.freedom-to-tinker.com/archives/000497.html

Photoshop Currency Detection
by k at 10:59 am EDT, Sep 17, 2004

Consider this a call for any comments/knowledge relating to this issue.

Also see: http://www.wildspark.com/eurionize/
http://www.freedom-to-tinker.com/archives/000497.html

[ Very interesting thought. I'm afraid I don't have any expertise to assist, but I'll bump this thread at least... -k]