As far as I know, that is not possible. You could set up two separate cameras pointing to the same cameras. So Driveway-Car and Driveway-Person. Then add both in AI tools. For the Car one, add the mask and check to only detect cars. Then for the Person one, do not add a mask but uncheck alerting...
Yes sir. If you setup AI tool and Deep Stack on the first page, the AI tool will send the image to deepstack, verify there is a person in it, then send an external trigger to Blue Iris that the alert was valid and to record/send alert.
Nick, I'm not positive what your question (or rather issue) is about only getting relevant alerts. However, if you mean a notification through the Blue Iris mobile app, here is what I did.
At first I was getting an alert on all motion. I went into the alert tab for the camera and unchecked...
It sounds like you have motion turned on for the Alerts tab. I uncheck everything except Extern. This way when the camera detects motion it does not alert you. Only when the AI tool sends the external alert command.