System information (version)

• OpenCV => 4.5.1-pre (git 46e275d )
• Operating System / Platform => Ubuntu 20.04, arm64-v8a
• Compiler => GCC 9.3

Hardware:

--   CPU/HW features:
--     Baseline:                    NEON FP16

Detailed description

Test output:

/home/opencv-cn/slave/workspace/nightly-master/ubuntu-20.04-arm64/opencv/modules/photo/test/test_hdr.cpp:230
Value of: max > 0.1
  Actual: true
Expected: false

Issue submission checklist

• I report the issue, it's not a question
• I checked the problem with documentation, FAQ, open issues,
  answers.opencv.org, Stack Overflow, etc and have not found solution
• I updated to latest OpenCV version and the issue is still there
• There is reproducer code and related data files: videos, images, onnx, etc