[Octave-bug-tracker] [bug #55100] [octave forge] (image) Unit test in normxcorr2 fails randomly

[Hartmut]

Follow-up Comment #2, bug #55100 (project octave):

I could also observe this test failing on my linux system. (I have tried 100
times in a for loop, it failed once.)

But there is a lot of numeric calculation involved in normxcorr2. So it seems
reasonable to me that we just increase the tolerance (from now 2*eps) to 3 (or
better 4) times eps for this test on RANDOM input images.

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