set_img_predictions_callback()¶

This method allows you to configure a callback to receive predictions and, additionally, it enables you to receive the image procesed. In addition to the callback, this method requires the camera controller that will perform image processing to be provided. If callback_async is defined, the callback is ignored. One of the callbacks must be defined.

Reference¶

Arguments¶

Arguments	Type	Default value	Description
callback	`callable`	`None`	Callback that will be invoked when a prediction arrives.
callback_async	`callable`	`None`	Async callback that will be invoked when a prediction arrives.
as_dict	`bool`	`False`	If set to `true`, the predictions will be returned as a dictionary; otherwise, they will be returned as a list.
call_without_predictions	`bool`	`False`	If it is set to `true`, the callback will be called even when there are no predictions. If it is set to `false`, the callback will not be called when there are no predictions.
cameras_controller	`callable`	`None`	Cameras controller

Return¶

None

Exceptions¶

RayaCVNeedController

See the complete list of cv exceptions.

Examples¶

def callback_prediction(self, msg, image):
    if msg:
        image = draw_on_image(
                image=image,
                last_predictions=msg
            )
    show_image(img=image, title='Video from Gary\'s camera')
...
self.cameras: CamerasController = \
        await self.enable_controller(ctlr_name='cameras')
self.predictor.set_img_predictions_callback(
        callback=self.callback_prediction,
        as_dict=True,
        call_without_classifications=True,
        cameras_controller=self.cameras
    )
...
...