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Improve scripts/amg.py: paths, progress bar, multi-GPU, resuming #398

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Improve scripts/amg.py: paths, progress bar, multi-GPU, resuming #398

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  • Change all os.path methods to the nicer pathlib.Path
  • Respect subfolders when processing a directory e.g. my/dataset/class_{0,1,2}/img_{0,1,2}.jpg -> my/masks/class_{0,1,2}/img_{0,1,2}.json
  • Show progress bar using tqdm
  • Load images in a separate dataloader process
  • Split a large dataset across multiple GPUs using rank/world size, no synchronization is needed, just 2 command line arguments
  • Skip processing images that already have a corresponding output dir (png masks) or json file (rle masks)

@baldassarreFe
Improve scripts/amg.py: paths, progress bar, multi-GPU, resuming
95beb8a 
- Change all os.path methods to the nicer pathlib.Path
- Respect subfolders when processing a directory e.g. my/dataset/class_{0,1,2}/img_{0,1,2}.jpg -> my/masks/class_{0,1,2}/img_{0,1,2}.json
- Show progress bar using tqdm
- Load images in a separate dataloader process
- Split a large dataset across multiple GPUs using rank/world size
- Skip processing images that already have a corresponding output dir (png masks) or json file (rle masks)
@facebook-github-bot facebook-github-bot added the CLA Signed This label is managed by the Facebook bot. Authors need to sign the CLA before a PR can be reviewed. label May 25, 2023
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