opencv/modules/imgcodecs/misc
Suleyman TURKMEN afe5b226b4
Merge pull request #27113 from sturkmen72:spng-CV_16U
Fixing imread() function 16 bit reading png problem with libspng #27113

The purpose of the PR was to load bit-exact compatible results with libspng and libpng. To test this, `Imgcodecs_Png_PngSuite `was improved. Files containing gamma correction were moved to a separate test called `Imgcodecs_Png_PngSuite_Gamma `because the logic created for the other files did not apply to those with gamma correction. As a result, libspng now works in bit-exact compatibility with libpng. The code can be refactored later.

### 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
- [ ] 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.
- [ ] The feature is well documented and sample code can be built with the project CMake
2025-06-22 15:43:09 +03:00
..
java/test Merge pull request #27113 from sturkmen72:spng-CV_16U 2025-06-22 15:43:09 +03:00
objc Merge pull request #24136 from komakai:visionos_support 2023-12-20 15:35:10 +03:00