orientation features in 2D have different ranges #71
Description
For 2D regions, three plugins provide measure of orientation, but the range is not the same for the three:
- EquivalentEllipse yields values between -90 and +90
- OrientedBox yields values between 0 and +180
- MinFeretDiameter yields values between 0 and +180
It would be nice to consider only one range.