For those of you actually reading this thread - it means you are actually interested in piracy prevention and proper detection....
The "real world" is light years ahead on all this as visual hashing is a massive research area (especially in videos given transcoding, youtube, copyright etc)
For one example (warning scientific paper, but well written and good visuals!) - see
this PDF manuscript. There are hundreds more like it (but more mathematically detailed!)
The real world is moving forward a lot, which is why large companies can easily send take down notices to google because things are automated.
When it's so easy for some to send out mass emails to end-users of pirated content, why the need for all this piracy prevention?
I really do find it extremely amazing that there has been only one person to date that has actually contacted me to discuss wanting to implement things discussed in this thread on their sites. (4 days on the front page is like 8 years in real human terms)
If piracy is such a major problem in this industry, I only see a handful of people interacting in a serious thread that is highlighting how to combat it
