All x86 platforms, Linux/Windows/OSX, 32/64-bit.

Nightly builds:

• http://pullrequest.opencv.org/buildbot/builders/master_noOCL_noICV-lin32/builds/1708
• http://pullrequest.opencv.org/buildbot/builders/master-win64-vc14/builds/11794
• http://pullrequest.opencv.org/buildbot/builders/master-mac/builds/11794
• etc 1-3 failed nightly builds per day

Precommits:

• http://pullrequest.opencv.org/buildbot/builders/precommit_linux64/builds/35426
• http://pullrequest.opencv.org/buildbot/builders/precommit_opencl/builds/31845
• http://pullrequest.opencv.org/buildbot/builders/precommit_windows64/builds/32334
• etc

Message:

Tolerance_FloatRel_IntAbs error: err=32768  tolerance=1  depth=CV_16SC1

Probably related to this PR: #21474 (comment)

/cc @anna-khakimova @dmatveev