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Improve numeric stability of LPIPS #2144

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merged 3 commits into from
Oct 6, 2023
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@SkafteNicki SkafteNicki commented Oct 5, 2023

What does this PR do?

Fixes #2139
Instead of doing sqrt(x) + eps in one of the operations involved in lpips it will now be sqrt(x+eps) which is more numerical stable for small values.

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📚 Documentation preview 📚: https://torchmetrics--2144.org.readthedocs.build/en/2144/

@SkafteNicki SkafteNicki added the bug / fix Something isn't working label Oct 5, 2023
@SkafteNicki SkafteNicki added this to the v1.2.x milestone Oct 5, 2023
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codecov bot commented Oct 5, 2023

Codecov Report

Merging #2144 (2bc17ad) into master (f925113) will decrease coverage by 46%.
Report is 1 commits behind head on master.
The diff coverage is 100%.

Additional details and impacted files
@@           Coverage Diff            @@
##           master   #2144     +/-   ##
========================================
- Coverage      87%     40%    -46%     
========================================
  Files         293     293             
  Lines       16371   16371             
========================================
- Hits        14230    6626   -7604     
- Misses       2141    9745   +7604     

@mergify mergify bot added the ready label Oct 5, 2023
@stancld stancld enabled auto-merge (squash) October 5, 2023 09:29
@stancld stancld merged commit 1d10277 into master Oct 6, 2023
64 checks passed
@stancld stancld deleted the bugfix/lpips_numeric_stability branch October 6, 2023 14:34
matsumotosan pushed a commit to matsumotosan/metrics that referenced this pull request Oct 14, 2023
Borda pushed a commit that referenced this pull request Nov 30, 2023
* improve stability

* changelog

(cherry picked from commit 1d10277)
Borda pushed a commit that referenced this pull request Dec 1, 2023
* improve stability

* changelog

(cherry picked from commit 1d10277)
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Dont bring the defect from LPIPS to torchmetrics
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