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Open Source Computer Vision Library opencv.org
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Stefan Dragnev 12b64b0e2a
Merge pull request #27927 from tailsu:tailsu/tiff-error-handler 
tiff: use a per-TIFF error handler #27927

libtiff 4.5 introduced [per-TIFF error handlers](https://libtiff.gitlab.io/libtiff/functions/TIFFOpenOptions.html). This PR removes the global OpenCV error handlers and uses per-handle error handlers. This reduces any risks associated with modifying global state, e.g. if another library also tries to set the global error handlers and OpenCV clobbers them.

### Pull Request Readiness Checklist

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

- [x] I agree to contribute to the project under Apache 2 License.
- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
- [x] The PR is proposed to the proper branch
- [x] There is a reference to the original bug report and related work
- [x] There is accuracy test, performance test and test data in opencv_extra repository, if applicable
      Patch to opencv_extra has the same branch name.
- [x] The feature is well documented and sample code can be built with the project CMake
2025-10-23 13:38:10 +03:00
.github Removed Android test as it's broken for now. 2025-02-18 12:52:24 +03:00
3rdparty Merge pull request #27806 from Kumataro:fix27784 2025-09-22 10:11:28 +03:00
apps Merge pull request #27906 from asmorkalov:as/cairosvg 2025-10-16 12:06:35 +03:00
cmake imgcodecs: GDAL: show GDAL version at OpenCV configuration 2025-10-20 18:37:04 +09:00
data Merge pull request #22727 from su77ungr:patch-1 2022-11-17 06:54:25 +00:00
doc Merge pull request #27866 from JayPol559:4.x 2025-10-21 12:30:58 +03:00
hal - Fixed incorrect implementation of multithreaded call for warp perspective in IPP HAL. 2025-10-14 06:21:31 -07:00
include exclude opencv_contrib modules 2020-02-26 15:12:45 +03:00
modules Merge pull request #27927 from tailsu:tailsu/tiff-error-handler 2025-10-23 13:38:10 +03:00
platforms Added option to wrap opencv_contrib into JS too. 2025-09-25 17:25:04 +03:00
samples Merge pull request #27810 from D00E:known-foreground-mask 2025-10-14 09:56:06 +03:00
.editorconfig add .editorconfig 2018-10-11 17:57:51 +00:00
.gitattributes cmake: generate and install ffmpeg-download.ps1 2018-06-09 13:19:48 +03:00
.gitignore Merge pull request #17165 from komakai:objc-binding 2020-06-08 18:32:53 +00:00
CMakeLists.txt Output GDAL library version in CMake status output. 2025-09-30 18:34:10 +03:00
CONTRIBUTING.md migration: github.com/opencv/opencv 2016-07-12 12:51:12 +03:00
COPYRIGHT Added OpenCV.AI copyright. 2025-08-01 09:50:10 +03:00
LICENSE Merge pull request #18073 from vpisarev:apache2_license 2020-08-17 11:49:11 +00:00
README.md Space mistake in README.md 2024-03-03 23:37:07 +05:30
SECURITY.md Updated PGP key for security reports 2023-04-19 19:16:55 +03:00

README.md

OpenCV: Open Source Computer Vision Library

Resources

Contributing

Please read the contribution guidelines before starting work on a pull request.

Summary of the guidelines:

  • One pull request per issue;
  • Choose the right base branch;
  • Include tests and documentation;
  • Clean up "oops" commits before submitting;
  • Follow the coding style guide.

Additional Resources