Create `sv.PercentageBarAnnotator`

[SkalskiP]

Description

Supervision is expanding its range of annotators. Following the example of BoundingBoxAnnotator, MaskAnnotator, or EllipseAnnotator, create PercentageBarAnnotator - whose task is to draw percentage bars related to sv.Detections. The inspiration for this annotator is, of course, video games.

It should also allow you to control the bar's position in relation to the box using sv.Position. The color of the bar and border should be configurable as well. By default, the bar should visualize sv.Detections.confidence value. Bar color should change across sv.ColorPalette provided as color argument.

Pseudocode

class PercentageBarAnnotator(BaseAnnotator):

    def __init__(
        self,
        color: Union[Color, ColorPalette] = ColorPalette.default(),
        border_color: Color = Color.black(),
        position: Position = Position.TOP_CENTER
    ):
        pass

    def annotate(
        self,
        scene: np.ndarray,
        detections: Detections,
    ) -> np.ndarray:
        pass

Documentation

Upenij that the new annotator is well documented. Read more in our contributor guidelines.

[jayaBalaR]

I would like to work on this task.

[SkalskiP]

Sure thing!

[xaristeidou]

@SkalskiP

How does that look like?

Find whole video sample in link below: https://drive.google.com/file/d/14wkO9FVAjxJd8QHVMwknuKhRASwrMPJp/view?usp=drive_link

[SkalskiP]

This task was completed in https://github.com/roboflow/supervision/pull/720. Closing the issue.