latest/detection/utils/

[giscus[bot]]

latest/detection/utils/

A set of easy-to-use utilities that will come in handy in any computer vision project.

https://supervision.roboflow.com/latest/detection/utils/

[dearMOMO]

I want to determine whether the coordinate points are in an area, and I would like to ask if there are some cases for reference

[LinasKo]

Hi @dearMOMO,

We don't currently provide any utilities for that. I'll add it to the idea list!

[mendozajpd]

I want to be able to use the tools with my Webcam, is it possible? or is it only for videos only?

[LinasKo]

Hi @mendozajpd 👋

Option 1 is to use InferencePiepline: https://inference.roboflow.com/quickstart/run_model_on_rtsp_webcam/

In supervision we don't have a wrapper around extracting images from a webcam feed, but you can very easily use normal OpenCV frames.

import cv2
from inference import get_model
import supervision as sv


model = get_model("yolov8n-640")
box_annotator = sv.BoxAnnotator()

cap = cv2.VideoCapture(0)

if not cap.isOpened():
    print("Cannot open camera")
    exit()

while True:
    ret, frame = cap.read()

    if not ret:
        print("Failed to grab frame")
        break

    result = model.infer(frame)[0]
    detections = sv.Detections.from_inference(result)
    annotated_frame = box_annotator.annotate(frame.copy(), detections)
    
    cv2.imshow('Webcam Stream', annotated_frame)
    if cv2.waitKey(1) & 0xFF == ord('q'):
        break

cap.release()
cv2.destroyAllWindows()

Try this - I believe it will work 😉

[Seredeep]

Is an API key needed to run inference locally? Why? What happens if I run in airgapped hardware?

[LinasKo]

The model needs to be downloaded at least once. My understanding is that we don't support 100% offline mode at the moment, even if you have weights trained on another system. It should work if you do it once and then go offline, but I haven't personally tested it.

[Seredeep]

so much for open source...

[amkbrys]

how to count objects on the image captured through the mobile app

[LinasKo]

Hi @amkbrys 👋

I'm less familiar with that side of our product, but you should be able to parse the response from one of these calls: https://docs.roboflow.com/deploy/hosted-api/custom-models/object-detection

Here are the links if you need other tasks: https://docs.roboflow.com/api-reference/inference

[NicolasGonzalezF]

Questions about licensing, im interested in using supervision for object detection and training new datasets but im confused, in some instances for detections ultralytics is used but they have license tipe AGLP 3.0 and supervisions is MIT , how does that work in a comercial env ?

[AlgosDuCouteau]

can supervision run with yolov11?

[onuralpszr]

can supervision run with yolov11?

Yes it can

[LinasKo]

To expand on that - absolutely!

Here's some example code to get you started:

import cv2
import supervision as sv
from inference import get_model

image = cv2.imread("dog.jpeg")
model = get_model(model_id="yolo11n-640")
results = model.infer(image)[0]
detections = sv.Detections.from_inference(results)

annotated_image = sv.BoxAnnotator().annotate(
    scene=image.copy(), detections=detections
)
annotated_image = sv.LabelAnnotator().annotate(
    scene=annotated_image, detections=detections
)
sv.plot_image(annotated_image)

• Available pre-trained models: Inference Docs - "Models: Popular"
• Get the image by running wget https://media.roboflow.com/notebooks/examples/dog.jpeg

[gotfrid99]

Hi, i want to know whether i can get the coordinates of the boxes using Supervision

[LinasKo]

Hi @gotfrid99 👋

detections.xyxy will give you the coordinates of top-left and bottom-right corners, for every detected object. See Detections.

[AlgosDuCouteau]

hi I want to implement an application that count in/out when an object passes through a line, eg. move from left side of the line to the right side of the line is in and reverse is out. Is there any reference for that?

[LinasKo]

Hi @AlgosDuCouteau 👋

That's exactly what LineZone does. Check out the example in the docs: https://supervision.roboflow.com/latest/detection/tools/line_zone/

You may check out this video as well: https://youtu.be/OS5qI9YBkfk?si=BGTVgxTMptDnPESv&t=1052