Log events through API when camera picks it up.

[XavierJ96]

Hi,

I'm trying to setup an API to listen to event changes when a camera picks up an object. The best I could do so far is adding the AXIS Object Analytics to the camera's APP list, setting up a Crossline counting, and calling the http://<server>/local/objectanalytics/control.cgi api every time to compare to the last data.

Method : { "apiVersion": "1.2", "context": "my context", "method": "getAccumulatedCounts", "params": { "scenario": } }

So my question would be is there an API or trigger I can setup to listen and get the details of every object when the camera picks it up?

Camera: AXIS Q3538-LVE Dome Camera.

Programming Language: C#, JavaScript.

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[rocky-ji]

check this:
https://www.axis.com/developer-community/scene-metadata-integration

[apljungquist]

Do you want the entire image or a crop of the object?

The latter can be achieved with a combination of the Best Snapshot and Message Broker features. Unfortunately, I know of no JS or C# APIs, but there are C, C++ and Rust examples that you could leverage. What is it that you are trying to build?

[XavierJ96]

Hi @rocky-ji ,

Sorry for they delayed response but I cannot view your Image attached.

[XavierJ96]

@apljungquist

I'm just looking to get the object information.

Currently, I'm using a "Crossline counting" scenario on AXIS Object Analytics and using this to send the information over MQTT.
Example object sent over MQTT:

Message object JSON: {
        "topic": "Scenario2",
        "timestamp": ,
        "message": {
          "source": {},
          "key": {},
          "data": {
            "totalBus": "0",
            "total": "802",
            "scenario": "Scenario 2",
            "totalCar": "701",
            "totalBike": "1",
            "resetTime": "",
            "totalOtherVehicle": "0",
            "reason": "car",
            "totalTruck": "39",
            "totalHuman": "61"
          }
        }
      }

So here I can use the "Reason" to at least see what triggered the event but Is there a way to take a snapshot and include the image URL or get more specific information when it's a vehicle, maybe the vehicle color?

Another thing:

I managed to set up LPR which is where I would get more information but how do I access the image inside the object?
I see I get this structure:

 "imagesURI": [
    "/local/fflprapp/tools.cgi?action=getImage&name=67/20231211145427_793329lp_TOLSL123_8104954.jpg",
    "/local/fflprapp/tools.cgi?action=getImage&name=68/20231211145427_804106roi_TOLSL123_8104955.jpg"
  ],

[rocky-ji]

try http://cameraIP/local/fflprapp/tools.cgi?action=getImage&name=67/20231211145427_793329lp_TOLSL123_8104954.jpg

[apljungquist]

I see. To my knowledge there is currently no easy solution to getting more information about the object that triggered an AOA event. The solutions I know of are:

1. subscribe to com.axis.analytics_scene_description.v0.beta and attempt to correlate AOA events with the objects present at the time of the event
2. build your own crossline counting on top of com.axis.analytics_scene_description.v0.beta.

Sorry I could not be of more help.