regionprops: rename equivalent_diameter -> equivalent_diameter_area

[maxfrei750]

There exists actually a whole variety of equivalent diameters. Therefore, IMHO, it would be nice to have a more specific name (e.g. equivalent_diameter_area).

[jni]

Thanks @maxfrei750 !

Could you enumerate a few of the options? My impression is that this will not bring a big enough benefit to justify the API break unless we also provide others.

However, when we release 1.0 we will be changing quite a few things and this might be a good candidate for that update. I’ll tag it for that.

[maxfrei750]

Admittedly, the distinction is more important for the 3d objects:

• surface area equivalent diameter
• projection area equivalent diameter
• volume equivalent diameter

than for 2d objects:

• area equivalent diameter
• perimeter equivalent diameter

[mkcor]

@maxfrei750 so, shouldn't the renaming be equivalent_diameter --> area_equivalent_diameter?

[maxfrei750]

@mkcor We had a similar situation for feret_diameter_max vs. max_feret_diameter (see #4820). We ended up using the former, since then all Feret diameters are grouped together. I would make the same argument for equivalent_diameter_area. The "area" is more like an index.

[mkcor]

Fixed by #5254