Query about max flow rates and filtering spurious reads

[dbrb2]

I have a meter with a mechanical "digital" display for litres, and an analogue dial for 10ths of a litre.
It seems to be wortking well, other than that in edge cases the litre reading will jump by 1 unit:

I can see discussion of this in various threads here, where the suggestion is to set the max rate low enough to filter this out.

#712

#3533

The tricky thing there seems to be that in this instance 30L/h could be valid - if for instance I was using a shower or a bath

The other option would seem to be to allow negative deltas, since then it will generally correct the next time(s) around. Any other suggestions?

[SybexX]

https://jomjol.github.io/AI-on-the-edge-device-docs/Parameters/#parameter-numberchangeratethreshold

[dbrb2]

Ah thanks.

So, with extended resolution off and change rate threshold set to 2, I came up with the above - where 203.9 was read, instead of 203.0 Perhaps that is because 0 and 9 look similar, especially when covered by a pointer.... Going to try a few things....

One thing I think I can do is move the camera closer (and refocus) so that the two readouts I care about cover more pixels