[Fix] Fix bug https://github.com/open-mmlab/mmaction2/issues/2459

[mareksubocz]

Fixes a bug that was found and solved in mmaction2 repository: open-mmlab/mmaction2#2459

Motivation

A bug was found that made pose inference on video throw an error when there were no human detections in any frame.

Modification

An if conditional was broadened to included 0-length arrays

BC-breaking (Optional)

Use cases (Optional)

Checklist

Before PR:

• I have read and followed the workflow indicated in the CONTRIBUTING.md to create this PR.
• Pre-commit or linting tools indicated in CONTRIBUTING.md are used to fix the potential lint issues.
• Bug fixes are covered by unit tests, the case that causes the bug should be added in the unit tests.
• New functionalities are covered by complete unit tests. If not, please add more unit tests to ensure correctness.
• The documentation has been modified accordingly, including docstring or example tutorials.

After PR:

• CLA has been signed and all committers have signed the CLA in this PR.

[CLAassistant]

All committers have signed the CLA.

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.01 🎉

Comparison is base (93119ae) 81.99% compared to head (f07a798) 82.01%.

❗ Current head f07a798 differs from pull request most recent head 8c45ac1. Consider uploading reports for the commit 8c45ac1 to get more accurate results

Additional details and impacted files

@@             Coverage Diff             @@
##           dev-1.x    #2474      +/-   ##
===========================================
+ Coverage    81.99%   82.01%   +0.01%     
===========================================
  Files          232      232              
  Lines        13638    13638              
  Branches      2319     2319              
===========================================
+ Hits         11183    11185       +2     
+ Misses        1919     1915       -4     
- Partials       536      538       +2     

Flag	Coverage Δ
unittests	82.01% <100.00%> (+0.01%)	⬆️

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

Impacted Files	Coverage Δ
mmpose/apis/inference.py	76.69% <100.00%> (ø)

... and 1 file with indirect coverage changes

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[OpenMMLab-Assistant-004]

Hi @mareksubocz,

We'd like to express our appreciation for your valuable contributions to the mmpose. Your efforts have significantly aided in enhancing the project's quality.
It is our pleasure to invite you to join our community thorugh Discord_Special Interest Group (SIG) channel. This is a great place to share your experiences, discuss ideas, and connect with other like-minded people. To become a part of the SIG channel, send a message to the moderator, OpenMMLab, briefly introduce yourself and mention your open-source contributions in the #introductions channel. Our team will gladly facilitate your entry. We eagerly await your presence. Please follow this link to join us: ​https://discord.gg/UjgXkPWNqA.

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Thanks again for your awesome contribution, and we're excited to have you as part of our community!

[Tau-J]

Hi @mareksubocz , thanks for your contribution. Could you please sign the CLA?

[mareksubocz]

Hi @mareksubocz , thanks for your contribution. Could you please sign the CLA?

No problem :)