Comment by anyfoo

We started with that approach, by assuming that the compression is wavelet based, and then purposefully generating wavelets that we know survive the compression process.

For the sake of this discussion, wavelets are pretty much exactly that: A bunch of frequencies where the "least important" (according to the algorithm) are cut out.

But that's pretty cool, seems like you've re-invented JPEG without knowing it, so your understanding is solid!