NVR Dahua 4 detect face and open door on VTO

GiovanniG

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Hi, I've 2 working VTO 6100C and I would not change them if possibile, I would like to buy a Dahua NVR (or use DSS) that is able to detect face, put them on white list and open gate automatically when face is recognized, is it possible? Which models can do that? Thank you!
 

steve1225

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Hi, I've 2 working VTO 6100C and I would not change them if possibile, I would like to buy a Dahua NVR (or use DSS) that is able to detect face, put them on white list and open gate automatically when face is recognized, is it possible? Which models can do that? Thank you!
VTO6100C is old and low-resolution (1.3mpx on 1/3" sensor) intercom.
I don't think is capable to provide image quality at face recognition level...

Plus for face recognition You should have camera / intercom installed AT FACE LEVEL. Not chest or stomach one..

Dahua have dedicated line of apartments intercoms at different price points which support face detection / recognition:

 

GiovanniG

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thank you mate for you answer, I've checked all these solutions, please let me tell you the installation will be on the street, with sun that hit many hours per day the device, temperatures low to -25, and people who may love vandalism when they see a wide display, so I would keep more on standard solutions, do you know if there are NVR that can process video stream, recognize a face on white list and open the gate? Or only VTO with face recognition may do that? Thank you.
I agree VTO shoudl be placed on the proper high.

Considering your suggestion, VTO6531H can suite more than others, it looks it doesn't support SD right? So does it needs NVR to store? ANd what it does store? Sorry if too many questons, but I would love to now:
  • Does it support movement detection
  • can it save a brief video after face recognition, or after pressing call button and can it be notified push on DMSS and whatched on messages as brief video
thank you!

PS: as for now, I couldn't find a VTO able to support movement detection and save it in SD, or record a "press call button" event on SD, as I know, the only way is to activate answering machine on VTH and hope the caller will wait till the end of call, then leave a message (probably this ill happen 1% of times, useless).
Thanks
 

GiovanniG

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Another important question, to create the white list, people have to register manually at each VTO? There is a way to share database between VTO? Can I do it remotely by web interface, for example sending VTO and image extracted from a video? My client is really hopeless with technology, he won't be able to add a new face himself. Thans for infos
 

steve1225

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VTO6531H have specified temperature -30 to +60 degrees of Celsius. So this is not a problem.

I never had possibility to play with those apartment solutions. So I can't answer to Your questions.

As I understand You are installer. You should contact Dahua in Your country and ask them those questions. They have people who knowns those solutions and can answer those questions.

You didn't specified for what type installation You want to use? Villa solution, Apartment, company building.
You asking for synchronization between many VTO - so as I understand this will be probably for company building.

If this is true - then You client probably need full access solution for all building (internal + external). Plus maybe solution for registering time of work.

If yes I would rather look for companies who do complex access solutions. and they are in Europe or America and have much better support.

In case of all Chinese OEM companies like Dahua/HIK, you always buying good hardware product with mediocre supporting software and with minimal / almost zero support and any guaranty that specified product can be updated / upgraded / modified to Your needs. Even country representatives of Dahua have little impact on what Dahua China does with its products.

if we talk about alternative / cheap solutions - You can try to use Face Detection & Recognition feature on modern AI NVR's (5xxx-EI).. You uploaded database of face pictures with names of those person to NVR. Face detection & recognition done on AI NVR works with any camera - so You can use Your cheap VTO or simply mount second turret camera like 5442 with much better video quality above intercom at face level. Please remember that 5xxx-EI can do face recognition on max 2 channels and this use 100% of AI power on that model

In this case you must build own external solution to monitor NVR events using public Dahua HTTP API for successful face recognition online 24/7.. and react for it (opening doors via some relay)..

In this case big problem will be delay time - VTO/camera captures image, compresses it and send to NVR. then NVR must decode video and do full AI analysis on it. if there will be match it will generate event, which should be received by Your external solution. Each steps have some delay. If You will sum all steps then You can get a few seconds delay which can be a problem.

So in my opinion If you want working solution for door access with face recognition Your should look for products specified for that needs.. And more from companies where You have full support.
 
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GiovanniG

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Thank you for your kind reply, I agree with you that buying a didicated system, which does itself the work, which has a camera disigned for that purpuse, etc, it's alwyas the best choice in terms of reliability. But the cost does also have impact here, installing 2 of those VTOs in a different place (right away the face of an adult), and rebuilding the decorative wall make the client think twice, and maybe wait for some seconds than pay all those amount of money. This is why I'm evaluating, with you plus and minus.

It's a villa with 2 entries and one monitor inside, also it needs another VTH that should ring first in queue.
The house has already two VTO-6100 installed and working, which suggest to evaluate the use of an AI NVR, as you said.
I've contacted Dahua but ad you perfectly describe, they don't support the way they have to, and their software often are incomplete, feature are missing and so on. So, the best way is to share experiences between us and be sure before buy anything with them.
As I told, before destroy and change everything, better to know what I can do with existent staff.

Thinking to leave actual VTOs, enhance the light sytem during night, I think I can face this:

Positive factors
  • cost
  • quick time implementation
  • using an NVR leaves me the chance to load faces remotely and have them working on both VTOs, saving client to add/edit himself on VTOs. Seams SmartPSS lite can help with NVR and manage face database, but I?m not sure it works wth new VTO too

Negative factors:
  • there is no 3D recogniction, a photo will be enough to fake the recognition
  • poor quality of cameras, probably lot of time is required
  • nothing is spoken when the door is opened (or there is a way to force VTO say somethng?)
  • I have to use one spare pair of cat5e cable to bring the contact for opening the door from the NVR alarm out (but I've found some support with Dahua API on Node Red, so I can use that to open the lock byt network)


I still wonder to know if I can use SmartPSS to push the face profile on both new VTOs VTO6531H , or I should work manually with the VTO display, and if I have to reply the same work on the other VTO.
What VTO6531H needs to be configured? If only DSS is able, do I need to pay also for that?
WHere VTO6531H saves its job? Do I need to buy a Dahua NVR tha can support it? And does this NVR dincronize both VTOs?

Thanks for clearing!
 

steve1225

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I still wonder to know if I can use SmartPSS to push the face profile on both new VTOs VTO6531H , or I should work manually with the VTO display, and if I have to reply the same work on the other VTO.
What VTO6531H needs to be configured? If only DSS is able, do I need to pay also for that?
WHere VTO6531H saves its job? Do I need to buy a Dahua NVR tha can support it? And does this NVR dincronize both VTOs?
There is manual download link on product page for those intercoms...


it describes interface on intercom front screen and also web service.
You can add users/faces/fingerprints in both interfaces..

Dahua intercoms are always standalone devices - they don't require any NVR/DSS/SmartPSS app to work.. Usually they don't even require VTH monitors - You can use only DMSS mobile app to receive calls..

From what I see in this manual web service is the same as in other lower lines of intercoms.. There is simply added a few menus more (like for face database). If you installed other models this will be the same for You...

Each face database is held on internal flash memory on VTO. If you will have 2 intercoms, You must add face definitions to each one. In case of home villa, where You have a few family members this is not a problem.
 

GiovanniG

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Thank you for clering it, in my case it's a problem because the client has any skill to proceed himself with adding (and more, do this on both VTO) and the place is far from me, I can't go there every time he needs to add or delete someone, simply no sense. More, during winter time it will be crazy to work outside, browse inside menu, etc.
Unfortunately Dahua is famous to providing poor and very limited solutions, I'm not suprised by that.

Anyway, asking Dahua about SmartPSS lite, they say it's able to manage faces and interact with database, but I need to test that of course
 

GiovanniG

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To catch call, open door and start manual record there are Dahua API, using Node Red is possibile to receive/trigger them easly, this may help somehow
 

GiovanniG

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to produce a short video on DMSS under the messages it's needed to rise an alarm (or video detection), maybe a face recogniction, I have no idea since I've never tested it, and I don't know if DMSS support the subscription on the face recognition.
Maybe face recognition event is availabe on the "alarm server", which protocol it is? Maybe with NET alarm (I've read it's just necesary to telnet the NVR on port 23 and listen to messages (if service enabled on that event).
Anyway, a more "rude" way can be to listen VTO call by API, then trigger a physical output on NVR which is connected to the physical input, that is configured to trigger record. About Local alarm is then possible to subscribe with DMSS, get the push and watch the comfortable message of who pressed the button
 

steve1225

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I you have ready to use component to receive Dahua events (Node red?), then for me You need:
  • simply wait for FaceDetection / FaceRecognition events (with proper Face ID) from NVR for specified channel,
  • simply wait for BackKeyLight events with value Call/Ring (1,2) from Intercom,
if both events occurs in small window frame (like 5 max 10 seconds) then send command to open door to VTO.

This should be done regardless of whether the intercom will call (after ring button press) the VTH monitors or the DMSS application as normal it will do..

ps. there is no guarantee that this will work in any way or won't require a lot more work.
 
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