I have the 5216-16P-I
Not sure about the performance yours, but the 4216 is not as strong. it also had a pretty bad review here.
First, the
idea of face recognition in general is great and doing it using the NVR have a different advantage.
The 5216 too is not ready for market and suffers from many problems but more than everything - they have missed with the
implementation of FR.
Not sure why you think that FR by the NVR is faster, especially since you didn't get the function to work.... Anyway, the reason it should be done by the NVR is usinf a common face DB for all system.
You want a central DB that knows the right faces and that each detection would check for a match in that DB: if cam 1 now knows Danny's face, all cams would identify him as Danny.
Currently, it's not even doing AI: you they not add more and more images of Danny to improve his identification, they simply add another person names Danny to the DB.
Google Picasa used to add more and more images of Danny to Danny's DB and improved his identification the more you added images of him. There is no "learning" here and it's not AI.
As I was saying, the implementation is currently BAD. What the FW is capable of, the SW does not do. The bad SW misses the whole point of FR and it's a shame:
In general, FR is not as reliable as other functions (that's fine with me) and therefore, had to be dealt in a total different way:
It had to function as an extra filter for SMD and/or IVS - If you have a line crossing, if it's human AND it was not a known person, set off the alarm.But it's fine to skip the alarm if it was 99% Danny.
But as a standalone, it's pretty much useless. Currently, it only works as a standalone feature.
The second problem: you may take many face captures of the same person (the camera is doing it fine). BUT, as long as you follow the same person that is still in the frame, they had to avoid making a decision for each and every capture: if three of my captures were not clear enough and one was, it is still Danny.... it's not three strangers and Danny!!!
The third problem is related to the other two (or eliminated if you fix the other two): As I was saying, the FR is not as reliable as you'd like it to be and that's fine with me. The distance, angle, light etc are limited and not every capture is good enough for FR.
If it can get a good FR of me 5m away, why starting when I'm 15m away? as a standalone feature, it's got no way to limit the area of detection as SMD and IVS are doing. If it was an extra filter for SMD or IVS as I suggested, that problem could be solved.
It's got a great potential. It could really bring lots of customers from BI to Dahua NVR. But at the moment, the bad SW implementation made it totally useless.
For now I'd suggest: don't buy it. It's a total wast of money.
If they ever fix it and turn the FR feature to be usable, I'd be the first one to make a nice Youtube video about it.
Back to your problem:
The green square notes facial detection. what made you think that the face RECOGNITION works in your care. detecting and identifying are two different things. it's very easy to detect face, way more difficult to identify.
If you do not see recognition in the AI search and not at the live view and probably your face DB is empty, what makes you think that it's working.
Please make sure that you've set it for face detection AND face recognition AND chose smart plan without the three of them it won't work. ALSO, you should avoid using human detection for the cams you want to use for FR. Human filtering can still be done VIA SMD and/or IVS but not the human detection function.
Also, your NVR supports less cams without build in FD for face recognition. Not sure but I think that only 1 or 2. If the cam itself support it, I believe it's up to 8 of the cams but even than, check if you set the NVR to do the FD or not.
@bigredfish :
It could work also with IVS smart plan if you're doing the both FD and FR by the NVR. in such case, you are limited in the amount of cams you may use for FR, but you can get both IVS and FR by the same camera.
Mind that you can choose if you want to use some of the features but the cam or by the NVR or both. if you do it by the NVR, the smart plan does not matter.