Add an ArUcoScene
=================

An [ArUcoScene](../../argaze.md/#argaze.ArUcoMarkers.ArUcoScene) class defines ...

Besides, the [ArUcoCamera](../../argaze.md/#argaze.ArUcoMarkers.ArUcoCamera) class projects [ArUcoScenes](../../argaze.md/#argaze.ArUcoMarkers.ArUcoScene)'s layers into its own layers thanks to ArUco markers pose estimations made by its [ArUcoDetector](../../argaze.md/#argaze.ArUcoMarkers.ArUcoDetector).

![ArUco scene](../../img/aruco_scene.png)

## Add ArUcoScene to ArUcoCamera JSON configuration file

An [ArUcoCamera](../../argaze.md/#argaze.ArUcoMarkers.ArUcoCamera) instance can contains multiples [ArUcoScene](../../argaze.md/#argaze.ArUcoMarkers.ArUcoScene).

Here is an extract from the JSON ArUcoCamera configuration file with a sample where one scene is added:

```json
{
	"name": "My FullHD camera",
	"size": [1920, 1080],
	...
    "scenes": {
        "MyScene" : {
            "aruco_markers_group": "aruco_description.json"
        },
        "layers": {
        	"MyLayer": {
        		"aoi_scene": "aoi_description.obj"
        	}
        }
    },
    "layers": {
    	"MyLayer": {}
    }
    ...
}
```

Now, let's understand the meaning of each JSON entry.

### "MyLayer"

The name of the [ArUcoScene](../../argaze.md/#argaze.ArUcoMarkers.ArUcoScene). Basically useful for visualisation purpose.

### ArUco markers group

...

### Layers

...

### AOI scene

The [AOIScene](../../argaze.md/#argaze.AreaOfInterest.AOIFeatures.AOIScene) defines a set of 2D [AreaOfInterest](../../argaze.md/#argaze.AreaOfInterest.AOIFeatures.AreaOfInterest) registered by name.

![AOI Scene](../../img/ar_layer_aoi_scene.png)