Login  Register

Re: particle analysis-Feret diameter

Posted by Robert Dougherty on Nov 27, 2005; 4:19pm
URL: http://imagej.273.s1.nabble.com/particle-analysis-Feret-diameter-tp3704371p3704391.html

There are some utilities at
http://www.optinav.com/ImageJplugins/Measure-Roi.htm

Bob

Robert P. Dougherty, Ph.D.
President, OptiNav, Inc.
Phone (425) 467-1118
Fax (425) 467-1119
www.optinav.com
 

> -----Original Message-----
> From: ImageJ Interest Group [mailto:[hidden email]] On Behalf Of K.
> Kachrimanis
> Sent: Saturday, November 26, 2005 1:45 PM
> To: [hidden email]
> Subject: particle analysis-Feret diameter
>
> Dear all,
>
> I have a question or rather a feature request related to the particle
> analysis, which so far has limited functionality copared to commercial
> software packages in regard to particle size and shape analysis. I have
> noticed that there is a Feret diameter included in the module, but it is
> not clear at which orientation is this Feret measured. Since Feret
> diameters depend on particle orientation, a Feret at a single orientation
> is virtually useless, particularly when one has to deal with elongated
> particles. Would it be possible to include more Ferets, at different
> angles, and also add an automatic selection of maximum and minimum Ferets?
> This would enable the calculation of the aspect ratio and other relevant
> shape descriptors.
>
> Regards,
>
> K.Kachrimanis.