Jianwei Feng issues

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                                            Jianwei Feng

Mistake in transforming 3D coordinates from cropped image to original image

Hi, thanks for the great work! I would like to point out a small mistake in [MultiHandTracker3D](https://github.com/JuliaPoo/MultiHand-Tracking/blob/master/src/multi_hand_tracker.py#L884). In multi_hand_tracker.py, line 884-889, it's transforming 2D coordinates from cropped image back to...

[Bug?] Gradient Synchronization for DDP

According to no_sync function description in https://github.com/pytorch/pytorch/blob/main/torch/nn/parallel/distributed.py#L1424 ``` .. warning:: The forward pass should be included inside the context manager, or else gradients will still be synchronized. ``` The current...