OpenCV
======

ArGaze provides a ready-made contexts to process cursor position over Open CV window and process movie images.

To select a desired context, the JSON samples have to be edited and saved inside an [ArContext configuration](../configuration_and_execution.md) file.
Notice that the *pipeline* entry is mandatory.

```json
{
	JSON sample
	"pipeline": ...
}
```

Read more about [ArContext base class in code reference](../../../argaze.md/#argaze.ArFeatures.ArContext).

## Cursor

::: argaze.utils.contexts.OpenCV.Cursor

### JSON sample

```json
{
    "argaze.utils.contexts.OpenCV.Cursor": {
        "name": "Open CV cursor",
        "pipeline": ...
    }
}
```

## Movie

::: argaze.utils.contexts.OpenCV.Movie

### JSON sample

```json
{
    "argaze.utils.contexts.OpenCV.Movie": {
        "name": "Open CV movie",
        "path": "./src/argaze/utils/demo/tobii_record/segments/1/fullstream.mp4",
        "pipeline": ...
    }
}
```

## Camera

::: argaze.utils.contexts.OpenCV.Camera

### JSON sample

```json
{
    "argaze.utils.contexts.OpenCV.Camera": {
        "name": "Open CV camera",
        "identifier": 0,
        "pipeline": ...
    }
}
```