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DetectionPredictor

Bases: BasePredictor

Source code in ultralytics/yolo/v8/detect/predict.py 
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class DetectionPredictor(BasePredictor):

    def postprocess(self, preds, img, orig_imgs):
        """Postprocesses predictions and returns a list of Results objects."""
        preds = ops.non_max_suppression(preds,
                                        self.args.conf,
                                        self.args.iou,
                                        agnostic=self.args.agnostic_nms,
                                        max_det=self.args.max_det,
                                        classes=self.args.classes)

        results = []
        for i, pred in enumerate(preds):
            orig_img = orig_imgs[i] if isinstance(orig_imgs, list) else orig_imgs
            if not isinstance(orig_imgs, torch.Tensor):
                pred[:, :4] = ops.scale_boxes(img.shape[2:], pred[:, :4], orig_img.shape)
            path = self.batch[0]
            img_path = path[i] if isinstance(path, list) else path
            results.append(Results(orig_img=orig_img, path=img_path, names=self.model.names, boxes=pred))
        return results

postprocess(preds, img, orig_imgs)

Postprocesses predictions and returns a list of Results objects.

Source code in ultralytics/yolo/v8/detect/predict.py 
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def postprocess(self, preds, img, orig_imgs):
    """Postprocesses predictions and returns a list of Results objects."""
    preds = ops.non_max_suppression(preds,
                                    self.args.conf,
                                    self.args.iou,
                                    agnostic=self.args.agnostic_nms,
                                    max_det=self.args.max_det,
                                    classes=self.args.classes)

    results = []
    for i, pred in enumerate(preds):
        orig_img = orig_imgs[i] if isinstance(orig_imgs, list) else orig_imgs
        if not isinstance(orig_imgs, torch.Tensor):
            pred[:, :4] = ops.scale_boxes(img.shape[2:], pred[:, :4], orig_img.shape)
        path = self.batch[0]
        img_path = path[i] if isinstance(path, list) else path
        results.append(Results(orig_img=orig_img, path=img_path, names=self.model.names, boxes=pred))
    return results



predict

Runs YOLO model inference on input image(s).

Source code in ultralytics/yolo/v8/detect/predict.py 
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def predict(cfg=DEFAULT_CFG, use_python=False):
    """Runs YOLO model inference on input image(s)."""
    model = cfg.model or 'yolov8n.pt'
    source = cfg.source if cfg.source is not None else ROOT / 'assets' if (ROOT / 'assets').exists() \
        else 'https://ultralytics.com/images/bus.jpg'

    args = dict(model=model, source=source)
    if use_python:
        from ultralytics import YOLO
        YOLO(model)(**args)
    else:
        predictor = DetectionPredictor(overrides=args)
        predictor.predict_cli()




Created 2023-04-16, Updated 2023-05-17
Authors: Glenn Jocher (3)