We had a theoretical discussion on copyright and couldn't agree on an answer.
Please keep in mind that we purposely ignored common sense and were just thinking about the hard legal implications.
Say there is a copyrighted picture. Making a copy of that picture falls under the protection of the copyright, even if it is not a perfect copy, even if the quality of the copy is significantly worse than the original.
Is there a limit to this?
Or in other words, if I reduce the color resolution of the copy to 1 bit (meaning, only black or white are possible) and the spacial resolution to one square pixel, is this still a copy of the original for the purposes of copyright?
If so, isn't a white pixel a copyrighted version of half of the world's copyrighted content?
If not, where is the limit where copyright vanishes?