[Feature] Support errors visualization for mot

[ToumaKazusa3]

No description provided.

[codecov]

Codecov Report

Merging #212 (751e522) into master (11d2a1c) will decrease coverage by 0.13%.
The diff coverage is 80.61%.

❗ Current head 751e522 differs from pull request most recent head 9962e72. Consider uploading reports for the commit 9962e72 to get more accurate results

@@            Coverage Diff             @@
##           master     #212      +/-   ##
==========================================
- Coverage   69.64%   69.51%   -0.14%     
==========================================
  Files          87       87              
  Lines        4395     4491      +96     
  Branches      863      876      +13     
==========================================
+ Hits         3061     3122      +61     
- Misses       1047     1069      +22     
- Partials      287      300      +13     

Flag	Coverage Δ
unittests	69.51% <80.61%> (-0.11%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
mmtrack/models/sot/base.py	49.51% <42.85%> (-0.49%)	⬇️
mmtrack/core/utils/visualization.py	47.77% <83.14%> (+34.59%)	⬆️
mmtrack/core/utils/__init__.py	100.00% <100.00%> (ø)
mmtrack/models/reid/base_reid.py	75.00% <0.00%> (-10.00%)	⬇️
mmtrack/datasets/pipelines/transforms.py	85.00% <0.00%> (-3.13%)	⬇️
mmtrack/datasets/sot_train_dataset.py	80.80% <0.00%> (-2.03%)	⬇️
mmtrack/models/mot/trackers/base_tracker.py	82.94% <0.00%> (-1.56%)	⬇️

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[GT9505]

LGTM @OceanPang

[OceanPang]

Please re-organize the functions and re-check the grammar of English docs.

[GT9505]

please also add unittests for fuctions in visualization.py