🚀 go-pugleaf

In article <1992Oct5.143634.1585@news.iastate.edu>, ewing@iastate.edu
(Robert P. Ewing) wrote:
> I am working on a skeletonizing problem also.  I am reading in
> scanned images of roots, and trying to calculate the total root
> length of the plant.  The most obvious approach (to me) is to
> skeletonize the image and take a total length from the number of
> pixels.  Is there a better way to do this?  Note that the root
> mass is fibrous, and roots cross each other in a 2-D image.
> 
> Robert Ewing, Soil Scientist
> ewing@iastate.edu

Using NIH Image on a Macintosh, I can skeletonize a thresholded image
without writing any code.  The total length is measured taking into
account the appropriate geometric factors, e.g. sqrt(2) for diagonal
pixels.  NIH image is free, and many people consider it to be better
than commercial packages.  Available from alw.nih.gov /pub/image.

The code is Think Pascal and uses Mac toolbox calls, so it would
be difficult to port, but the source is available.

--
Edward J. Huff huff@mcclb0.med.nyu.edu   (212)998-8465
Keck Laboratory for Biomolecular Imaging
NYU Chemistry Deptartment, 31 Washington Place, New York NY 10003
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