🚀 Added
- Ability to select [`sv.Detections`](https://roboflow.github.io/supervision/detection/core/#supervision.detection.core.Detections.__getitem__) by index, list of indexes or slice. Here is an example illustrating the new selection methods. (https://github.com/roboflow/supervision/pull/118)
python
>>> import supervision as sv
>>> detections = sv.Detections(...)
>>> len(detections[0])
1
>>> len(detections[[0, 1]])
2
>>> len(detections[0:2])
2
- Ability to extract masks from YOLOv8 results using [`sv.Detections.from_yolov8`](https://roboflow.github.io/supervision/detection/core/#supervision.detection.core.Detections.from_yolov8). Here is an example illustrating how to extract boolean masks from the result of the YOLOv8 model inference. (https://github.com/roboflow/supervision/pull/101)
python
>>> import cv2
>>> from ultralytics import YOLO
>>> import supervision as sv
>>> image = cv2.imread(...)
>>> image.shape
(640, 640, 3)
>>> model = YOLO('yolov8s-seg.pt')
>>> result = model(image)[0]
>>> detections = sv.Detections.from_yolov8(result)
>>> detections.mask.shape
(2, 640, 640)
- Ability to crop the image using [`sv.crop`](https://roboflow.github.io/supervision/utils/image/#crop). Here is an example showing how to get a separate crop for each detection in `sv.Detections`. (https://github.com/roboflow/supervision/pull/122)
python
>>> import cv2
>>> import supervision as sv
>>> image = cv2.imread(...)
>>> detections = sv.Detections(...)
>>> len(detections)
2
>>> crops = [
... sv.crop(image=image, xyxy=xyxy)
... for xyxy
... in detections.xyxy
... ]
>>> len(crops)
2
- Ability to conveniently save multiple images into directory using [`sv.ImageSink`](https://roboflow.github.io/supervision/utils/image/#imagesink). An example shows how to save every tenth video frame as a separate image. (https://github.com/roboflow/supervision/pull/120)
python
>>> import supervision as sv
>>> with sv.ImageSink(target_dir_path='target/directory/path') as sink:
... for image in sv.get_video_frames_generator(source_path='source_video.mp4', stride=10):
... sink.save_image(image=image)
🛠️ Fixed
- Inconvenient handling of [`sv.PolygonZone`](https://roboflow.github.io/supervision/detection/tools/polygon_zone/#polygonzone) coordinates. Now `sv.PolygonZone` accepts coordinates in the form of `[[x1, y1], [x2, y2], ...]` that can be both integers and floats. (https://github.com/roboflow/supervision/issues/106)
🏆 Contributors
SkalskiP lomnes-atlast-food hardikdava