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Watermark removal algorithm and how to defend against it:


On 8/25/17 10:54 AM, Deborah Shaw wrote:
> As far as I know, it doesn’t, but I am inquiring and will let everyone 
> know!
> Deb
> _______
> Deborah B. Shaw
> dbShaw Studios
> [log in to unmask] <mailto:[log in to unmask]>
> 949.887.3465
>> On Aug 25, 2017, at 9:10 AM, Lynette Cook <[log in to unmask] 
>> <mailto:[log in to unmask]>> wrote:
>> This issue is so troubling! I too am using Digimarc. Has anybody 
>> inquired to find out if the algorithm affects the Digimarc?
>> Lynette
>> --
>> Ms. Lynette R. Cook, Artist/Illustrator
>> [log in to unmask] <mailto:[log in to unmask]>
>> Main Web Site:
>> On Aug 24, 2017, at 5:43 PM, Deborah Shaw wrote:
>>> I’m back at a computer and so can respond better.
>>> You’re right Gretchen, anyone who is even reasonably good at 
>>> Photoshop can wipe out a watermark. I once timed myself as a 
>>> “challenge” issued by an artist who didn’t believe it was possible 
>>> to do so. I love a good dare. It took me about 40 minutes on an 
>>> extremely complicated image with an intricate watermark (and yes—I 
>>> used another friend’s image with permission for the experiment in a 
>>> live public lecture format).
>>> I worry that, if our copyrights are further eroded, it will not only 
>>> be easier for nefarious thieves to steal our images, but that it 
>>> also will be easier for them to claim that they are “orphaned” artworks.
>>> I’ve been using Digimarc for some time now, which adds an invisible 
>>> watermark within the pixels of an image, but I will certainly be 
>>> researching whether or not I need to upgrade my plan to something 
>>> more impenetrable and with more feedback to me. And yes, more 
>>> expensive (sigh again). I’ll let everyone know what I find as I 
>>> continue to research this further.
>>> In the meantime, I think we should do what the stock photo houses 
>>> are doing: if we are watermarking our images, we should add 
>>> additional information specific to each artwork in the watermark, as 
>>> well as use the Photoshop or Illustrator filters (depending on where 
>>> you create your watermark) to uniquely warp or tweak each one. The 
>>> danger with the new algorithms is using the same watermark, even at 
>>> different sizes, across all your images on the web. It can easily 
>>> find and wipe out typography (e.g., artist’s name and copyright 
>>> date) as well as logos and ghosted “x’s” through the image.
>>> Please let me know anything else anyone finds out. Frankly, I also 
>>> find it quite unsettling that this happened a month ago and I’m just 
>>> learning about it through my professional subscriptions now…
>>> Thanks!
>>> Deb
>>> _________________
>>> Deborah Shaw
>>> dbShaw Studios
>>> cell: 949.887.3465
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