Re: Maximum Colinear Breadth Perpendicular to Feret Diameter??????

Posted by Gabriel Landini on Jun 27, 2014; 9:56am
URL: http://imagej.273.s1.nabble.com/Maximum-Colinear-Breadth-Perpendicular-to-Feret-Diameter-tp5008458p5008464.html

On Thursday 26 Jun 2014 14:36:46 Pacanino wrote:
> I have found the particles8 plugin as well as the macro drawferet&breadth.
> The problem I'm having with this macro is that it draws the breadth, but not
> co-linearly. Essentially, the tool gives the breadth as two independent
> projections perpendicularly out of the Feret Diameter such that the sum of
> those two projections would be equivalent to the width of a minimum
> bounding box for the image...

That *is* the breadth of the region. It is not necessarily co-linear and might
not be unique either.

> Instead,  I'm looking for a way to measure
> the maximum breadth for a co-linear pair of projections perpendicular to
> the Feret Diameter.

You probably want something called "rotating calipers" and get the widest and
the narrowest lengths. Michael Doube had a macro to do this. That does not
give you, however, the max Feret or (consequently) the breadth.

Cheers

Gabriel

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