Does the Google Mobile Vision (https://developers.google.com/vision/) API work offline? Or does it need Internet connectivity? The sample app does not require any Internet permission. Which means the API works entirely offline. I am looking for a positive confirmation of this.
PS. Also I am looking for more information on this API. For example, does it use neural networks? If so what algorithms were used? I can not find any detail discussion anywhere.
The API does an initial library download the first time that it is used, and then works offline from that point on.