ultralytics 8.0.65 YOLOv8 Pose models (#1347)
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Ayush Chaurasia
GitHub
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57 changed files with 1578 additions and 489 deletions
103
ultralytics/yolo/v8/pose/predict.py
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ultralytics/yolo/v8/pose/predict.py
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# Ultralytics YOLO 🚀, GPL-3.0 license
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from ultralytics.yolo.engine.results import Results
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from ultralytics.yolo.utils import DEFAULT_CFG, ROOT, ops
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from ultralytics.yolo.utils.plotting import colors, save_one_box
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from ultralytics.yolo.v8.detect.predict import DetectionPredictor
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class PosePredictor(DetectionPredictor):
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def postprocess(self, preds, img, orig_img):
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preds = ops.non_max_suppression(preds,
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self.args.conf,
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self.args.iou,
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agnostic=self.args.agnostic_nms,
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max_det=self.args.max_det,
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classes=self.args.classes,
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nc=len(self.model.names))
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results = []
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for i, pred in enumerate(preds):
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orig_img = orig_img[i] if isinstance(orig_img, list) else orig_img
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shape = orig_img.shape
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pred[:, :4] = ops.scale_boxes(img.shape[2:], pred[:, :4], shape).round()
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pred_kpts = pred[:, 6:].view(len(pred), *self.model.kpt_shape) if len(pred) else pred[:, 6:]
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pred_kpts = ops.scale_coords(img.shape[2:], pred_kpts, shape)
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path, _, _, _, _ = self.batch
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img_path = path[i] if isinstance(path, list) else path
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results.append(
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Results(orig_img=orig_img,
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path=img_path,
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names=self.model.names,
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boxes=pred[:, :6],
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keypoints=pred_kpts))
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return results
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def write_results(self, idx, results, batch):
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p, im, im0 = batch
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log_string = ''
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if len(im.shape) == 3:
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im = im[None] # expand for batch dim
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self.seen += 1
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imc = im0.copy() if self.args.save_crop else im0
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if self.source_type.webcam or self.source_type.from_img: # batch_size >= 1
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log_string += f'{idx}: '
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frame = self.dataset.count
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else:
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frame = getattr(self.dataset, 'frame', 0)
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self.data_path = p
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self.txt_path = str(self.save_dir / 'labels' / p.stem) + ('' if self.dataset.mode == 'image' else f'_{frame}')
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log_string += '%gx%g ' % im.shape[2:] # print string
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self.annotator = self.get_annotator(im0)
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det = results[idx].boxes # TODO: make boxes inherit from tensors
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if len(det) == 0:
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return f'{log_string}(no detections), '
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for c in det.cls.unique():
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n = (det.cls == c).sum() # detections per class
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log_string += f"{n} {self.model.names[int(c)]}{'s' * (n > 1)}, "
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kpts = reversed(results[idx].keypoints)
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for k in kpts:
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self.annotator.kpts(k, shape=results[idx].orig_shape)
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# write
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for j, d in enumerate(reversed(det)):
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c, conf, id = int(d.cls), float(d.conf), None if d.id is None else int(d.id.item())
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if self.args.save_txt: # Write to file
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kpt = (kpts[j][:, :2] / d.orig_shape[[1, 0]]).reshape(-1).tolist()
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box = d.xywhn.view(-1).tolist()
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line = (c, *box, *kpt) + (conf, ) * self.args.save_conf + (() if id is None else (id, ))
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with open(f'{self.txt_path}.txt', 'a') as f:
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f.write(('%g ' * len(line)).rstrip() % line + '\n')
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if self.args.save or self.args.show: # Add bbox to image
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name = ('' if id is None else f'id:{id} ') + self.model.names[c]
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label = (f'{name} {conf:.2f}' if self.args.show_conf else name) if self.args.show_labels else None
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if self.args.boxes:
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self.annotator.box_label(d.xyxy.squeeze(), label, color=colors(c, True))
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if self.args.save_crop:
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save_one_box(d.xyxy,
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imc,
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file=self.save_dir / 'crops' / self.model.model.names[c] / f'{self.data_path.stem}.jpg',
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BGR=True)
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return log_string
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def predict(cfg=DEFAULT_CFG, use_python=False):
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model = cfg.model or 'yolov8n-pose.pt'
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source = cfg.source if cfg.source is not None else ROOT / 'assets' if (ROOT / 'assets').exists() \
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else 'https://ultralytics.com/images/bus.jpg'
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args = dict(model=model, source=source)
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if use_python:
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from ultralytics import YOLO
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YOLO(model)(**args)
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else:
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predictor = PosePredictor(overrides=args)
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predictor.predict_cli()
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if __name__ == '__main__':
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predict()
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