got this error while executing Winston-luz test

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Sougou Marane

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Nov 21, 2025, 6:11:21 AM11/21/25
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raise ValueError(
ValueError: Couldn't find the minimum number of disks in the image. Found 0; required: 1

I got this error while executing Winston-luz test

Any clarification and suggestion for the above

alanm...@gmail.com

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Nov 24, 2025, 2:17:48 AM11/24/25
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Hi Sougou

Please provide a bit more information. Are you using the single target or multi-target Winston_Lutz? What field size are you using? What size is your ball bearing?

Regards
Alan

tbe...@gmail.com

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Feb 17, 2026, 2:10:10 AMFeb 17
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Hi,

most problems with the Winston Lutz test arise from the visibility/density of the BBs. We changed all our Phantoms to use tungsten carbide BBs instead of the usual steel BBs.

regards
Thomas
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