The main classifier they use is using logistic regression, so no. They do mention that a deep nn had similar performance, but even if you deep-dreamed it you wo

The main classifier they use is using logistic regression, so no. They do mention that a deep nn had similar performance, but even if you deep-dreamed it you wouldn't get images, you would get feature sets, since they first run the photos through a feature extraction model (i.e. the input to the nn is not raw pixels).