Closes #19184

Pull Request Readiness Checklist

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

• I agree to contribute to the project under Apache 2 License.
• To the best of my knowledge, the proposed patch is not based on a code under GPL or other license that is incompatible with OpenCV
• The PR is proposed to proper branch
• There is reference to original bug report and related work
• 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

before

[ RUN      ] ExposureCompensate.SimilarityThreshold
/opencv/modules/stitching/test/test_exposure_compensate.cpp:69: Failure
Expected: (psnr_similarity_mask) > (300), actual: 38.0114 vs 300
[  FAILED  ] ExposureCompensate.SimilarityThreshold (56824 ms)

after

[ RUN      ] ExposureCompensate.SimilarityThreshold
[       OK ] ExposureCompensate.SimilarityThreshold (115807 ms)