Release 8.0.5 PR (#279)
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com> Co-authored-by: Glenn Jocher <glenn.jocher@ultralytics.com> Co-authored-by: Izam Mohammed <106471909+izam-mohammed@users.noreply.github.com> Co-authored-by: Yue WANG 王跃 <92371174+yuewangg@users.noreply.github.com> Co-authored-by: Thibaut Lucas <thibautlucas13@gmail.com>pull/305/head v8.0.5
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docs.ultralytics.com |
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This is the simplest way of simply using YOLOv8 models in a Python environment. It can be imported from |
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the `ultralytics` module. |
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|
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!!! example "Train" |
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|
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=== "From pretrained(recommanded)" |
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```python |
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from ultralytics import YOLO |
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|
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model = YOLO("yolov8n.pt") # pass any model type |
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model.train(epochs=5) |
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``` |
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|
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=== "From scratch" |
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```python |
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from ultralytics import YOLO |
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model = YOLO("yolov8n.yaml") |
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model.train(data="coco128.yaml", epochs=5) |
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``` |
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|
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=== "Resume" |
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```python |
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TODO: Resume feature is under development and should be released soon. |
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``` |
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|
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!!! example "Val" |
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|
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=== "Val after training" |
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```python |
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from ultralytics import YOLO |
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model = YOLO("yolov8n.yaml") |
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model.train(data="coco128.yaml", epochs=5) |
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model.val() # It'll automatically evaluate the data you trained. |
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``` |
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|
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=== "Val independently" |
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```python |
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from ultralytics import YOLO |
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model = YOLO("model.pt") |
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# It'll use the data yaml file in model.pt if you don't set data. |
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model.val() |
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# or you can set the data you want to val |
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model.val(data="coco128.yaml") |
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``` |
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|
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!!! example "Predict" |
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|
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=== "From source" |
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```python |
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from ultralytics import YOLO |
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model = YOLO("model.pt") |
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model.predict(source="0") # accepts all formats - img/folder/vid.*(mp4/format). 0 for webcam |
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model.predict(source="folder", show=True) # Display preds. Accepts all yolo predict arguments |
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|
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``` |
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|
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=== "From image/ndarray/tensor" |
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```python |
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# TODO, still working on it. |
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``` |
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|
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|
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=== "Return outputs" |
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```python |
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from ultralytics import YOLO |
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|
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model = YOLO("model.pt") |
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outputs = model.predict(source="0", return_outputs=True) # treat predict as a Python generator |
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for output in outputs: |
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# each output here is a dict. |
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# for detection |
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print(output["det"]) # np.ndarray, (N, 6), xyxy, score, cls |
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# for segmentation |
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print(output["det"]) # np.ndarray, (N, 6), xyxy, score, cls |
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print(output["segment"]) # List[np.ndarray] * N, bounding coordinates of masks |
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# for classify |
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print(output["prob"]) # np.ndarray, (num_class, ), cls prob |
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|
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``` |
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|
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!!! note "Export and Deployment" |
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|
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=== "Export, Fuse & info" |
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```python |
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from ultralytics import YOLO |
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model = YOLO("model.pt") |
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model.fuse() |
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model.info(verbose=True) # Print model information |
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model.export(format=) # TODO: |
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|
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``` |
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=== "Deployment" |
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|
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|
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More functionality coming soon |
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|
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To know more about using `YOLO` models, refer Model class Reference |
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|
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[Model reference](reference/model.md){ .md-button .md-button--primary} |
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|
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--- |
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|
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### Using Trainers |
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|
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`YOLO` model class is a high-level wrapper on the Trainer classes. Each YOLO task has its own trainer that inherits |
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from `BaseTrainer`. |
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|
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!!! tip "Detection Trainer Example" |
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|
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```python |
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from ultralytics.yolo import v8 import DetectionTrainer, DetectionValidator, DetectionPredictor |
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|
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# trainer |
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trainer = DetectionTrainer(overrides={}) |
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trainer.train() |
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trained_model = trainer.best |
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|
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# Validator |
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val = DetectionValidator(args=...) |
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val(model=trained_model) |
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|
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# predictor |
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pred = DetectionPredictor(overrides={}) |
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pred(source=SOURCE, model=trained_model) |
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|
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# resume from last weight |
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overrides["resume"] = trainer.last |
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trainer = detect.DetectionTrainer(overrides=overrides) |
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``` |
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|
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You can easily customize Trainers to support custom tasks or explore R&D ideas. |
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Learn more about Customizing `Trainers`, `Validators` and `Predictors` to suit your project needs in the Customization |
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Section. |
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|
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[Customization tutorials](engine.md){ .md-button .md-button--primary} |
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All task Predictors are inherited from `BasePredictors` class that contains the model validation routine boilerplate. You can override any function of these Trainers to suit your needs. |
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All task Predictors are inherited from `BasePredictors` class that contains the model validation routine boilerplate. |
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You can override any function of these Trainers to suit your needs. |
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|
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--- |
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|
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### BasePredictor API Reference |
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|
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:::ultralytics.yolo.engine.predictor.BasePredictor |
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All task Trainers are inherited from `BaseTrainer` class that contains the model training and optimzation routine boilerplate. You can override any function of these Trainers to suit your needs. |
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All task Trainers are inherited from `BaseTrainer` class that contains the model training and optimzation routine |
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boilerplate. You can override any function of these Trainers to suit your needs. |
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|
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--- |
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|
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### BaseTrainer API Reference |
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|
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:::ultralytics.yolo.engine.trainer.BaseTrainer |
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All task Validators are inherited from `BaseValidator` class that contains the model validation routine boilerplate. You can override any function of these Trainers to suit your needs. |
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All task Validators are inherited from `BaseValidator` class that contains the model validation routine boilerplate. You |
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can override any function of these Trainers to suit your needs. |
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|
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--- |
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|
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### BaseValidator API Reference |
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|
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:::ultralytics.yolo.engine.validator.BaseValidator |
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### Exporter API Reference |
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|
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:::ultralytics.yolo.engine.exporter.Exporter |
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## Using YOLO models |
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This is the simplest way of simply using yolo models in a python environment. It can be imported from the `ultralytics` module. |
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|
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!!! example "Usage" |
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=== "Training" |
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```python |
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from ultralytics import YOLO |
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model = YOLO("yolov8n.yaml") |
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model(img_tensor) # Or model.forward(). inference. |
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model.train(data="coco128.yaml", epochs=5) |
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``` |
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|
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=== "Training pretrained" |
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```python |
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from ultralytics import YOLO |
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model = YOLO("yolov8n.pt") # pass any model type |
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model(...) # inference |
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model.train(epochs=5) |
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``` |
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|
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=== "Resume Training" |
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```python |
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from ultralytics import YOLO |
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model = YOLO() |
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model.resume(task="detect") # resume last detection training |
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model.resume(model="last.pt") # resume from a given model/run |
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``` |
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|
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=== "Visualize/save Predictions" |
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```python |
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from ultralytics import YOLO |
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model = YOLO("model.pt") |
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model.predict(source="0") # accepts all formats - img/folder/vid.*(mp4/format). 0 for webcam |
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model.predict(source="folder", show=True) # Display preds. Accepts all yolo predict arguments |
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|
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``` |
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|
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!!! note "Export and Deployment" |
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|
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=== "Export, Fuse & info" |
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```python |
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from ultralytics import YOLO |
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model = YOLO("model.pt") |
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model.fuse() |
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model.info(verbose=True) # Print model information |
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model.export(format=) # TODO: |
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|
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``` |
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=== "Deployment" |
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|
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|
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More functionality coming soon |
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|
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To know more about using `YOLO` models, refer Model class Reference |
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|
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[Model reference](reference/model.md){ .md-button .md-button--primary} |
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|
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--- |
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### Using Trainers |
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`YOLO` model class is a high-level wrapper on the Trainer classes. Each YOLO task has its own trainer that inherits from `BaseTrainer`. |
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!!! tip "Detection Trainer Example" |
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```python |
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from ultralytics.yolo import v8 import DetectionTrainer, DetectionValidator, DetectionPredictor |
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|
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# trainer |
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trainer = DetectionTrainer(overrides={}) |
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trainer.train() |
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trained_model = trainer.best |
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|
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# Validator |
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val = DetectionValidator(args=...) |
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val(model=trained_model) |
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|
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# predictor |
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pred = DetectionPredictor(overrides={}) |
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pred(source=SOURCE, model=trained_model) |
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|
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# resume from last weight |
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overrides["resume"] = trainer.last |
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trainer = detect.DetectionTrainer(overrides=overrides) |
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|
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``` |
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You can easily customize Trainers to support custom tasks or explore R&D ideas. |
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Learn more about Customizing `Trainers`, `Validators` and `Predictors` to suit your project needs in the Customization Section. |
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|
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[Customization tutorials](engine.md){ .md-button .md-button--primary} |
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Image classification is the simplest of the three tasks and involves classifying an entire image into one of a set of |
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predefined classes. |
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|
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<img width="1024" src="https://user-images.githubusercontent.com/26833433/212094133-6bb8c21c-3d47-41df-a512-81c5931054ae.png"> |
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|
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The output of an image classifier is a single class label and a confidence score. Image |
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classification is useful when you need to know only what class an image belongs to and don't need to know where objects |
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of that class are located or what their exact shape is. |
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|
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!!! tip "Tip" |
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|
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YOLOv8 _classification_ models use the `-cls` suffix, i.e. `yolov8n-cls.pt` and are pretrained on ImageNet. |
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|
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[Models](https://github.com/ultralytics/ultralytics/tree/main/ultralytics/models/v8/cls){.md-button .md-button--primary} |
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|
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## Train |
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|
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Train YOLOv8n-cls on the MNIST160 dataset for 100 epochs at image size 64. For a full list of available arguments |
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see the [Configuration](../config.md) page. |
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|
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!!! example "" |
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|
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=== "Python" |
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|
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```python |
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from ultralytics import YOLO |
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|
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# Load a model |
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model = YOLO("yolov8n-cls.yaml") # build a new model from scratch |
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model = YOLO("yolov8n-cls.pt") # load a pretrained model (recommended for training) |
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|
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# Train the model |
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results = model.train(data="mnist160", epochs=100, imgsz=64) |
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``` |
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=== "CLI" |
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|
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```bash |
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yolo task=classify mode=train data=mnist160 model=yolov8n-cls.pt epochs=100 imgsz=64 |
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``` |
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|
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## Val |
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|
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Validate trained YOLOv8n-cls model accuracy on the MNIST160 dataset. No argument need to passed as the `model` retains |
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it's training `data` and arguments as model attributes. |
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|
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!!! example "" |
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|
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=== "Python" |
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|
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```python |
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from ultralytics import YOLO |
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# Load a model |
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model = YOLO("yolov8n-cls.pt") # load an official model |
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model = YOLO("path/to/best.pt") # load a custom model |
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|
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# Validate the model |
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results = model.val() # no arguments needed, dataset and settings remembered |
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``` |
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=== "CLI" |
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|
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```bash |
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yolo task=classify mode=val model=yolov8n-cls.pt # val official model |
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yolo task=classify mode=val model=path/to/best.pt # val custom model |
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``` |
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|
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## Predict |
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|
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Use a trained YOLOv8n-cls model to run predictions on images. |
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|
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!!! example "" |
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|
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=== "Python" |
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|
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```python |
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from ultralytics import YOLO |
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|
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# Load a model |
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model = YOLO("yolov8n-cls.pt") # load an official model |
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model = YOLO("path/to/best.pt") # load a custom model |
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|
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# Predict with the model |
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results = model("https://ultralytics.com/images/bus.jpg") # predict on an image |
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``` |
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=== "CLI" |
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|
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```bash |
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yolo task=classify mode=predict model=yolov8n-cls.pt source="https://ultralytics.com/images/bus.jpg" # predict with official model |
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yolo task=classify mode=predict model=path/to/best.pt source="https://ultralytics.com/images/bus.jpg" # predict with custom model |
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``` |
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|
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## Export |
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|
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Export a YOLOv8n-cls model to a different format like ONNX, CoreML, etc. |
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|
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!!! example "" |
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|
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=== "Python" |
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|
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```python |
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from ultralytics import YOLO |
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# Load a model |
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model = YOLO("yolov8n-cls.pt") # load an official model |
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model = YOLO("path/to/best.pt") # load a custom trained |
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|
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# Export the model |
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model.export(format="onnx") |
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``` |
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=== "CLI" |
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|
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```bash |
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yolo mode=export model=yolov8n-cls.pt format=onnx # export official model |
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yolo mode=export model=path/to/best.pt format=onnx # export custom trained model |
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``` |
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|
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Available YOLOv8-cls export formats include: |
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| Format | `format=` | Model | |
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|----------------------------------------------------------------------------|---------------|-------------------------------| |
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| [PyTorch](https://pytorch.org/) | - | `yolov8n-cls.pt` | |
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| [TorchScript](https://pytorch.org/docs/stable/jit.html) | `torchscript` | `yolov8n-cls.torchscript` | |
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| [ONNX](https://onnx.ai/) | `onnx` | `yolov8n-cls.onnx` | |
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| [OpenVINO](https://docs.openvino.ai/latest/index.html) | `openvino` | `yolov8n-cls_openvino_model/` | |
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| [TensorRT](https://developer.nvidia.com/tensorrt) | `engine` | `yolov8n-cls.engine` | |
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| [CoreML](https://github.com/apple/coremltools) | `coreml` | `yolov8n-cls.mlmodel` | |
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| [TensorFlow SavedModel](https://www.tensorflow.org/guide/saved_model) | `saved_model` | `yolov8n-cls_saved_model/` | |
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| [TensorFlow GraphDef](https://www.tensorflow.org/api_docs/python/tf/Graph) | `pb` | `yolov8n-cls.pb` | |
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| [TensorFlow Lite](https://www.tensorflow.org/lite) | `tflite` | `yolov8n-cls.tflite` | |
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| [TensorFlow Edge TPU](https://coral.ai/docs/edgetpu/models-intro/) | `edgetpu` | `yolov8n-cls_edgetpu.tflite` | |
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| [TensorFlow.js](https://www.tensorflow.org/js) | `tfjs` | `yolov8n-cls_web_model/` | |
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| [PaddlePaddle](https://github.com/PaddlePaddle) | `paddle` | `yolov8n-cls_paddle_model/` | |
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Object detection is a task that involves identifying the location and class of objects in an image or video stream. |
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|
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<img width="1024" src="https://user-images.githubusercontent.com/26833433/212094133-6bb8c21c-3d47-41df-a512-81c5931054ae.png"> |
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|
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The output of an object detector is a set of bounding boxes that enclose the objects in the image, along with class |
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labels |
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and confidence scores for each box. Object detection is a good choice when you need to identify objects of interest in a |
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scene, but don't need to know exactly where the object is or its exact shape. |
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|
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!!! tip "Tip" |
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|
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YOLOv8 _detection_ models have no suffix and are the default YOLOv8 models, i.e. `yolov8n.pt` and are pretrained on COCO. |
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|
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[Models](https://github.com/ultralytics/ultralytics/tree/main/ultralytics/models/v8){ .md-button .md-button--primary} |
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|
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## Train |
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|
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Train YOLOv8n on the COCO128 dataset for 100 epochs at image size 640. For a full list of available arguments see |
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the [Configuration](../config.md) page. |
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|
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!!! example "" |
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|
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=== "Python" |
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|
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```python |
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from ultralytics import YOLO |
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|
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# Load a model |
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model = YOLO("yolov8n.yaml") # build a new model from scratch |
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model = YOLO("yolov8n.pt") # load a pretrained model (recommended for training) |
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|
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# Train the model |
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results = model.train(data="coco128.yaml", epochs=100, imgsz=640) |
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``` |
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=== "CLI" |
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|
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```bash |
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yolo task=detect mode=train data=coco128.yaml model=yolov8n.pt epochs=100 imgsz=640 |
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``` |
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|
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## Val |
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|
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Validate trained YOLOv8n model accuracy on the COCO128 dataset. No argument need to passed as the `model` retains it's |
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training `data` and arguments as model attributes. |
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|
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!!! example "" |
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|
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=== "Python" |
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|
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```python |
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from ultralytics import YOLO |
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|
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# Load a model |
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model = YOLO("yolov8n.pt") # load an official model |
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model = YOLO("path/to/best.pt") # load a custom model |
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|
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# Validate the model |
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results = model.val() # no arguments needed, dataset and settings remembered |
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``` |
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=== "CLI" |
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|
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```bash |
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yolo task=detect mode=val model=yolov8n.pt # val official model |
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yolo task=detect mode=val model=path/to/best.pt # val custom model |
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``` |
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|
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## Predict |
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|
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Use a trained YOLOv8n model to run predictions on images. |
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|
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!!! example "" |
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|
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=== "Python" |
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|
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```python |
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from ultralytics import YOLO |
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|
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# Load a model |
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model = YOLO("yolov8n.pt") # load an official model |
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model = YOLO("path/to/best.pt") # load a custom model |
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|
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# Predict with the model |
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results = model("https://ultralytics.com/images/bus.jpg") # predict on an image |
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``` |
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=== "CLI" |
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|
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```bash |
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yolo task=detect mode=predict model=yolov8n.pt source="https://ultralytics.com/images/bus.jpg" # predict with official model |
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yolo task=detect mode=predict model=path/to/best.pt source="https://ultralytics.com/images/bus.jpg" # predict with custom model |
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``` |
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|
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## Export |
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|
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Export a YOLOv8n model to a different format like ONNX, CoreML, etc. |
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|
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!!! example "" |
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|
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=== "Python" |
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|
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```python |
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from ultralytics import YOLO |
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|
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# Load a model |
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model = YOLO("yolov8n.pt") # load an official model |
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model = YOLO("path/to/best.pt") # load a custom trained |
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|
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# Export the model |
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model.export(format="onnx") |
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``` |
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=== "CLI" |
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|
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```bash |
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yolo mode=export model=yolov8n.pt format=onnx # export official model |
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yolo mode=export model=path/to/best.pt format=onnx # export custom trained model |
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``` |
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|
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Available YOLOv8 export formats include: |
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|
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| Format | `format=` | Model | |
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|----------------------------------------------------------------------------|--------------------|---------------------------| |
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| [PyTorch](https://pytorch.org/) | - | `yolov8n.pt` | |
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| [TorchScript](https://pytorch.org/docs/stable/jit.html) | `torchscript` | `yolov8n.torchscript` | |
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| [ONNX](https://onnx.ai/) | `onnx` | `yolov8n.onnx` | |
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| [OpenVINO](https://docs.openvino.ai/latest/index.html) | `openvino` | `yolov8n_openvino_model/` | |
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| [TensorRT](https://developer.nvidia.com/tensorrt) | `engine` | `yolov8n.engine` | |
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| [CoreML](https://github.com/apple/coremltools) | `coreml` | `yolov8n.mlmodel` | |
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| [TensorFlow SavedModel](https://www.tensorflow.org/guide/saved_model) | `saved_model` | `yolov8n_saved_model/` | |
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| [TensorFlow GraphDef](https://www.tensorflow.org/api_docs/python/tf/Graph) | `pb` | `yolov8n.pb` | |
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| [TensorFlow Lite](https://www.tensorflow.org/lite) | `tflite` | `yolov8n.tflite` | |
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| [TensorFlow Edge TPU](https://coral.ai/docs/edgetpu/models-intro/) | `edgetpu` | `yolov8n_edgetpu.tflite` | |
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| [TensorFlow.js](https://www.tensorflow.org/js) | `tfjs` | `yolov8n_web_model/` | |
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| [PaddlePaddle](https://github.com/PaddlePaddle) | `paddle` | `yolov8n_paddle_model/` | |
@ -0,0 +1,135 @@ |
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Instance segmentation goes a step further than object detection and involves identifying individual objects in an image |
||||
and segmenting them from the rest of the image. |
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|
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<img width="1024" src="https://user-images.githubusercontent.com/26833433/212094133-6bb8c21c-3d47-41df-a512-81c5931054ae.png"> |
||||
|
||||
The output of an instance segmentation model is a set of masks or |
||||
contours that outline each object in the image, along with class labels and confidence scores for each object. Instance |
||||
segmentation is useful when you need to know not only where objects are in an image, but also what their exact shape is. |
||||
|
||||
!!! tip "Tip" |
||||
|
||||
YOLOv8 _segmentation_ models use the `-seg` suffix, i.e. `yolov8n-seg.pt` and are pretrained on COCO. |
||||
|
||||
[Models](https://github.com/ultralytics/ultralytics/tree/main/ultralytics/models/v8/seg){.md-button .md-button--primary} |
||||
|
||||
## Train |
||||
|
||||
Train YOLOv8n-seg on the COCO128-seg dataset for 100 epochs at image size 640. For a full list of available |
||||
arguments see the [Configuration](../config.md) page. |
||||
|
||||
!!! example "" |
||||
|
||||
=== "Python" |
||||
|
||||
```python |
||||
from ultralytics import YOLO |
||||
|
||||
# Load a model |
||||
model = YOLO("yolov8n-seg.yaml") # build a new model from scratch |
||||
model = YOLO("yolov8n-seg.pt") # load a pretrained model (recommended for training) |
||||
|
||||
# Train the model |
||||
results = model.train(data="coco128-seg.yaml", epochs=100, imgsz=640) |
||||
``` |
||||
=== "CLI" |
||||
|
||||
```bash |
||||
yolo task=segment mode=train data=coco128-seg.yaml model=yolov8n-seg.pt epochs=100 imgsz=640 |
||||
``` |
||||
|
||||
## Val |
||||
|
||||
Validate trained YOLOv8n-seg model accuracy on the COCO128-seg dataset. No argument need to passed as the `model` |
||||
retains it's training `data` and arguments as model attributes. |
||||
|
||||
!!! example "" |
||||
|
||||
=== "Python" |
||||
|
||||
```python |
||||
from ultralytics import YOLO |
||||
|
||||
# Load a model |
||||
model = YOLO("yolov8n-seg.pt") # load an official model |
||||
model = YOLO("path/to/best.pt") # load a custom model |
||||
|
||||
# Validate the model |
||||
results = model.val() # no arguments needed, dataset and settings remembered |
||||
``` |
||||
=== "CLI" |
||||
|
||||
```bash |
||||
yolo task=segment mode=val model=yolov8n-seg.pt # val official model |
||||
yolo task=segment mode=val model=path/to/best.pt # val custom model |
||||
``` |
||||
|
||||
## Predict |
||||
|
||||
Use a trained YOLOv8n-seg model to run predictions on images. |
||||
|
||||
!!! example "" |
||||
|
||||
=== "Python" |
||||
|
||||
```python |
||||
from ultralytics import YOLO |
||||
|
||||
# Load a model |
||||
model = YOLO("yolov8n-seg.pt") # load an official model |
||||
model = YOLO("path/to/best.pt") # load a custom model |
||||
|
||||
# Predict with the model |
||||
results = model("https://ultralytics.com/images/bus.jpg") # predict on an image |
||||
``` |
||||
=== "CLI" |
||||
|
||||
```bash |
||||
yolo task=segment mode=predict model=yolov8n-seg.pt source="https://ultralytics.com/images/bus.jpg" # predict with official model |
||||
yolo task=segment mode=predict model=path/to/best.pt source="https://ultralytics.com/images/bus.jpg" # predict with custom model |
||||
``` |
||||
|
||||
## Export |
||||
|
||||
Export a YOLOv8n-seg model to a different format like ONNX, CoreML, etc. |
||||
|
||||
!!! example "" |
||||
|
||||
=== "Python" |
||||
|
||||
```python |
||||
from ultralytics import YOLO |
||||
|
||||
# Load a model |
||||
model = YOLO("yolov8n-seg.pt") # load an official model |
||||
model = YOLO("path/to/best.pt") # load a custom trained |
||||
|
||||
# Export the model |
||||
model.export(format="onnx") |
||||
``` |
||||
=== "CLI" |
||||
|
||||
```bash |
||||
yolo mode=export model=yolov8n-seg.pt format=onnx # export official model |
||||
yolo mode=export model=path/to/best.pt format=onnx # export custom trained model |
||||
``` |
||||
|
||||
Available YOLOv8-seg export formats include: |
||||
|
||||
| Format | `format=` | Model | |
||||
|----------------------------------------------------------------------------|---------------|-------------------------------| |
||||
| [PyTorch](https://pytorch.org/) | - | `yolov8n-seg.pt` | |
||||
| [TorchScript](https://pytorch.org/docs/stable/jit.html) | `torchscript` | `yolov8n-seg.torchscript` | |
||||
| [ONNX](https://onnx.ai/) | `onnx` | `yolov8n-seg.onnx` | |
||||
| [OpenVINO](https://docs.openvino.ai/latest/index.html) | `openvino` | `yolov8n-seg_openvino_model/` | |
||||
| [TensorRT](https://developer.nvidia.com/tensorrt) | `engine` | `yolov8n-seg.engine` | |
||||
| [CoreML](https://github.com/apple/coremltools) | `coreml` | `yolov8n-seg.mlmodel` | |
||||
| [TensorFlow SavedModel](https://www.tensorflow.org/guide/saved_model) | `saved_model` | `yolov8n-seg_saved_model/` | |
||||
| [TensorFlow GraphDef](https://www.tensorflow.org/api_docs/python/tf/Graph) | `pb` | `yolov8n-seg.pb` | |
||||
| [TensorFlow Lite](https://www.tensorflow.org/lite) | `tflite` | `yolov8n-seg.tflite` | |
||||
| [TensorFlow Edge TPU](https://coral.ai/docs/edgetpu/models-intro/) | `edgetpu` | `yolov8n-seg_edgetpu.tflite` | |
||||
| [TensorFlow.js](https://www.tensorflow.org/js) | `tfjs` | `yolov8n-seg_web_model/` | |
||||
| [PaddlePaddle](https://github.com/PaddlePaddle) | `paddle` | `yolov8n-seg_paddle_model/` | |
||||
|
||||
|
||||
|
Loading…
Reference in new issue