Re: measurements
Posted by
John Cahill on
Nov 17, 2006; 8:44pm
URL: http://imagej.273.s1.nabble.com/measurements-tp3700984p3700987.html
Ben,
You may be looking for the feret dimension of the object, see Gabriel
Landini's excellent software for ImageJ at
http://www.dentistry.bham.ac.uk/landinig/software/software.htmlCan you describe the measurement you expect to get if an isosceles
triangle is drawn (base of a, height of b) then rotated and moved
arbitrarily in the image.
Do you expect the measurements to be invariant of the rotation angle
and position?
cheers,
John Cahill
Carlisle MA
On 11/16/06, Ben Fitzgibbon <
[hidden email]> wrote:
> Hello
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> I am attempting to measure the maximum linear length of the x and y axis
> of free-hand drawn polygons of various shapes using Image J. The only
> measurement function that I can determine is suitable for this type on
> analysis is the 'Fit Ellipse' function. My colleague used to own a mac
> computer and suggests that it was once possible to get a maximum x and
> maximum y value using NIH for Mac. Is the 'Fit Ellipse' function the
> best way of doing this?
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> Any help would be greatly appreciated
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> Cheers
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> Ben
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