Re: search for better regtest comparison algorithm

[Hans Åberg]

> On 28 Jul 2024, at 19:49, Werner LEMBERG <wl@gnu.org> wrote:
> 
>>> I'm quite sure that behind the scene, for all GUIs, a metric gets
>>> computed to decide whether there are differences at all.  We 'just'
>>> have to find one that fits our needs.
>> 
>> It looks like you want a different property than an average metric,
>> so perhaps what you have can be modified to add that.
> 
> Yes, this might be the solution to go: On top of the MAE algorithm we
> currently use, another algorithm might increase the penalty for small
> feature differences so that it is above our threshold.

It gets into the construction of image comparison algorithms. Perhaps using 
some exponential for differences, or make another option for capturing 
additions and removals.