>> 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
