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ultralytics 8.0.100 add Mosaic9() augmentation (#2605)

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Co-authored-by: Ayush Chaurasia <ayush.chaurarsia@gmail.com>
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Glenn Jocher 2023-05-14 20:43:35 +02:00 • committed by GitHub
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ultralytics/yolo/utils/loss.py
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@ -34,7 +34,7 @@ class BboxLoss(nn.Module):
def forward(self, pred_dist, pred_bboxes, anchor_points, target_bboxes, target_scores, target_scores_sum, fg_mask):
"""IoU loss."""
weight = torch.masked_select(target_scores.sum(-1), fg_mask).unsqueeze(-1)
weight = target_scores.sum(-1)[fg_mask]
iou = bbox_iou(pred_bboxes[fg_mask], target_bboxes[fg_mask], xywh=False, CIoU=True)
loss_iou = ((1.0 - iou) * weight).sum() / target_scores_sum