gt_layers/sample_0028/bounding_boxes.json

[
  [
    160,
    0,
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  ],
  [
    0,
    0,
    211,
    216
  ],
  [
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    0,
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  ],
  [
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  ],
  [
    82,
    55,
    171,
    151
  ],
  [
    87,
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    167,
    187
  ],
  [
    44,
    33,
    71,
    216
  ],
  [
    51,
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    65,
    187
  ]
]