INFO0 global cbuildmaster_winpack-build-win64-vc15opencvmodulescoresrcparallelregistry_parallelimplhpp 96 cvparallelParallelBackendRegistryParallelBackendRegistry coreparallel Enabled backends3 sorted

The log message indicates that the OpenCV library is trying to load parallel processing backends, but it is failing to load the required DLL files. Specifically, it is failing to load the following DLLs:

• opencv_core_parallel_onetbb452_64d.dll
• opencv_core_parallel_tbb452_64d.dll
• opencv_core_parallel_openmp452_64d.dll

These DLL files are likely missing from the specified directories:

• D:\Program Files (x86)\opencv\build\x64\vc15\bin\

This can happen if the OpenCV installation is incomplete or if the DLL files are not located in the expected directory. Make sure that you have a complete installation of OpenCV and that the DLL files are present in the specified directory