DH-SDT4E425-8P-GB-APV1 Problems with auto tracking

[Tortillaman]

Hi all,
this would be my first post here .
I have several mainly Dahua cams in my system and lately i installed at a friend of mine and here on my parkingspot the same camera (DH-SDT4E425-8P-GB-APV1)

The image is pretty good, also the auto tracking works decent untill this happens.
The older model EOL cam i have has i think autotracking v2 and this should be V3 but that cam works flawlessly this one not so much.


Some camera info:

Device Model
DH-SDT4E425-8P-GB-APV1

ONVIF Version
23.12(V3.1.0.1734191)

System Version
V3.200.0000019.1.R, Build Date: 2024-12-19

Web Version
V5.01.0.2160692

PTZ Version
V2.401.0000001.84.RHNGC_240105_49361

Algorithm Version
1.0.3

Security Baseline Version
V2.4

H5Player Version
V3.01.1

What i have done is setup the camera,

• set a preset
• then go to AI
• from there SMART PLAN and made a rule
• i used Tripwire and selected a box
• did not put a minimum size in , and maximum size is the whole screen.
• turn on direction both
• turn on human filter and vehicle
• turn on action appear and cross

Step 2
Went to Panoramic linkage and selected

• enable
• auto tracking
• follow until xx
• size

What happens is when for example a car drives into the tripwire border, it follows, and person gets out walks away, its in a sort of loop and it does not stop until i press the zoom or a preset in PTZ then it returns after X minute and works like should again.
( i have seen this behaviour also on the wall at my friends cam, here you can see a little video where it is focussed somewhere on a wall after it tracked a car and stays in the loop)


Made a recording of my screen where it does this and it doesn't stop from itself.

Does anyone know or has the same experience with this ?

Hereare the screenshots of my settings:

next:



And here is the video:








( I might have a "solution" that is set a max time for tracking instead of the options :

• Continue till object dissapears
• Track untill objets tracked by detail camera dissapear

But at the - Custom option you can set the time and it should aways go back to the desired preset location but still this should not behave like this does it ?)

 

[Tortillaman]

This seems to be a solution for now, but the question remains should it do this keep on looping or out of the blue starts to "loop" on a object or no object at all ?

 

[oh6hfx]

Installed 3 x of those X-pans cameras last week. So far I have experienced the same behaviour in one of the cameras too. Seems to be a bug / something to do with the idle position and that there is no time limit set for tracking.

I have also noticed that there is a problem when you choose either of the "object disappears" options. When a person comes with a car, ptz camera starts to track the car, and once the car is parked, it continues "tracking" the parked car, but ignores the person who is leaving the car. PTZ position stays pointing at the parked car, because it has not been disappeared. It stays even there is idle position set. I have not figured the logic out completely yet, but to me it seems also that the camera is ignoring any other movement in the intrusion zone if it is busy tracking the parked car.

Addition to idle position, I made a PTZ schedule rule to a home preset, and auto home after 30 secs or 1 minutes. This stops tracking the parked car and allows new tracking according to intrusion zone on the panoramic camera happen.

 

[oh6hfx]

This morning experienced this again in one of the cameras. Loop started when a person arrived with his car, parked it and stepped out. After car was parked, camera started to steer to idle position, but during that, the person was walking from the car and panoramic camera sent a command to ptz to start to track the person. This was not successful, as the ptz tracked only couple of meters, then centered again in the parked car, then back to the point where it stopped tracking the walking person, then back, then... and loop for 1 hour until I manually moved it back to idle position preset.

Other camera did not do the loop, but it stopped tracking when another person came with a car and parked it. PTZ just stayed in that position and did not go to idle position or to ptz schedule - had to turn it manually back to home preset.

I seem to have not the newest FW in these, have to do an update. And also maybe only option for panoramic linkage is to use a time limit rather than trying it to see when object disappears. Actually disappear is not a best way to do it - "until target stops moving" should be better.

 

[Mark_M]

There's 2026 firmware for these cameras.
Upgrade to those.

It also adds in AcuPick and the Xinghan vision models/WizTracking.

 

[oh6hfx]

Updated to the new FW today. All three cameras lost the calibration between panorama/ptz lens. Tried to do auto calibration to get it work quickly but "not available in this scene". I have never succeeded with auto calibration in these cameras - wonder what kind of scene it must be to get it auto calibrated? Maybe I should put some marks on the ground? Anyway, have to do manual calibration again, works better after that, though it takes some time.

Also update brought new options in the linkage menu. Tracking mode can be chosen between Linkage track and relay tracking, don't know what the latter means? Also new target priority is added, there is time in seconds, maybe it is how long it keeps tracking first target after it moves to the new target?

 

[oh6hfx]

Looks like "relay tracking" is most likely the old "track until object disappears in detail camera". Panorama lens is relaying detection to ptz lens for tracking. Did the manual calibration and tracking works now quite fine. I have intrusion zone set on panorama lens and sometimes it detects intrusion just on the far edge of the zone but does not catch the object for tracking. This was the same also with the older FW.

 

[Mark_M]

Looks like "relay tracking" is most likely the old "track until object disappears in detail camera". Panorama lens is relaying detection to ptz lens for tracking. Did the manual calibration and tracking works now quite fine. I have intrusion zone set on panorama lens and sometimes it detects intrusion just on the far edge of the zone but does not catch the object for tracking. This was the same also with the older FW.

Relay tracking: Track the object on the PTZ by the panoramic camera, stop when it disappears from the panoramic camera.
Linkage tracking: Track the object on the PTZ by the panoramic camera, and continue if it disappears from the panoramic (switch over to tracking by PTZ).
No linkage: it is the PTZs own tracking algorithm.