particle analysis-Feret diameter

Posted by K. Kachrimanis on Nov 26, 2005; 9:45pm
URL: http://imagej.273.s1.nabble.com/particle-analysis-Feret-diameter-tp3704371.html

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.