Python Sử dụng

from ultralytics import YOLO

model = YOLO('yolov8n.pt') # pass any model type
results = model.train(epochs=5)

from ultralytics import YOLO

model = YOLO('yolov8n.yaml')
results = model.train(data='coco8.yaml', epochs=5)

model = YOLO("last.pt")
results = model.train(resume=True)

  from ultralytics import YOLO

  model = YOLO('yolov8n.yaml')
  model.train(data='coco8.yaml', epochs=5)
  model.val()  # It'll automatically evaluate the data you trained.

  from ultralytics import YOLO

  model = YOLO("model.pt")
  # It'll use the data YAML file in model.pt if you don't set data.
  model.val()
  # or you can set the data you want to val
  model.val(data='coco8.yaml')

from ultralytics import YOLO
from PIL import Image
import cv2

model = YOLO("model.pt")
# accepts all formats - image/dir/Path/URL/video/PIL/ndarray. 0 for webcam
results = model.predict(source="0")
results = model.predict(source="folder", show=True) # Display preds. Accepts all YOLO predict arguments

# from PIL
im1 = Image.open("bus.jpg")
results = model.predict(source=im1, save=True)  # save plotted images

# from ndarray
im2 = cv2.imread("bus.jpg")
results = model.predict(source=im2, save=True, save_txt=True)  # save predictions as labels

# from list of PIL/ndarray
results = model.predict(source=[im1, im2])

# results would be a list of Results object including all the predictions by default
# but be careful as it could occupy a lot memory when there're many images,
# especially the task is segmentation.
# 1. return as a list
results = model.predict(source="folder")

# results would be a generator which is more friendly to memory by setting stream=True
# 2. return as a generator
results = model.predict(source=0, stream=True)

for result in results:
    # Detection
    result.boxes.xyxy   # box with xyxy format, (N, 4)
    result.boxes.xywh   # box with xywh format, (N, 4)
    result.boxes.xyxyn  # box with xyxy format but normalized, (N, 4)
    result.boxes.xywhn  # box with xywh format but normalized, (N, 4)
    result.boxes.conf   # confidence score, (N, 1)
    result.boxes.cls    # cls, (N, 1)

    # Segmentation
    result.masks.data      # masks, (N, H, W)
    result.masks.xy        # x,y segments (pixels), List[segment] * N
    result.masks.xyn       # x,y segments (normalized), List[segment] * N

    # Classification
    result.probs     # cls prob, (num_class, )

# Each result is composed of torch.Tensor by default,
# in which you can easily use following functionality:
result = result.cuda()
result = result.cpu()
result = result.to("cpu")
result = result.numpy()

  from ultralytics import YOLO

  model = YOLO('yolov8n.pt')
  model.export(format='onnx', dynamic=True)

  from ultralytics import YOLO

  model = YOLO('yolov8n.pt')
  model.export(format='onnx', device=0)

from ultralytics import YOLO

# Load a model
model = YOLO('yolov8n.pt')  # load an official detection model
model = YOLO('yolov8n-seg.pt')  # load an official segmentation model
model = YOLO('path/to/best.pt')  # load a custom model

# Track with the model
results = model.track(source="https://youtu.be/LNwODJXcvt4", show=True)
results = model.track(source="https://youtu.be/LNwODJXcvt4", show=True, tracker="bytetrack.yaml")

from ultralytics.utils.benchmarks import benchmark

# Benchmark
benchmark(model='yolov8n.pt', data='coco8.yaml', imgsz=640, half=False, device=0)

from ultralytics import Explorer

# create an Explorer object
exp = Explorer(data='coco8.yaml', model='yolov8n.pt')
exp.create_embeddings_table()

similar = exp.get_similar(img='https://ultralytics.com/images/bus.jpg', limit=10)
print(similar.head())

# Search using multiple indices
similar = exp.get_similar(
                        img=['https://ultralytics.com/images/bus.jpg',
                             'https://ultralytics.com/images/bus.jpg'],
                        limit=10
                        )
print(similar.head())

from ultralytics import Explorer

# create an Explorer object
exp = Explorer(data='coco8.yaml', model='yolov8n.pt')
exp.create_embeddings_table()

similar = exp.get_similar(idx=1, limit=10)
print(similar.head())

# Search using multiple indices
similar = exp.get_similar(idx=[1,10], limit=10)
print(similar.head())