Re: search for better regtest comparison algorithm

[Werner LEMBERG]

>> It would seem that though shifts and changes in the lengths of the
>> staves are "common", small and relatively benign problems,
>> rotations and scales (magnifications) should be considered major
>> disasters, right?
> 
> Rotations do not generally happen. Virtually all the positioning is
> rectilinear, and scaling is also not common. What happens that
> objects end up in different locations, and sometimes variable
> objects (slurs, beams) have different sizes.

BTW, I got an interesting reply on StackExchange; maybe you two (Luca
and Han-Wen) want to comment on it.

  
https://computergraphics.stackexchange.com/questions/14143/search-for-special-image-difference-metric/14145


    Werner