Mark Rauschkolb wrote:
MR> I am a graduate student in Computer Science, and am working on a
MR> project that is trying to analyze (count, measure, etc.) growth
MR> rings by using image processing techniques on an image of the
MR> disc that has been scanned into a computer.
I am a CSc/Math graduate, with no prior forestry background, but
employed in the forestry field (been here since 1986).
We have a program that was developed in Quebec that scans discs with
a HP ScanJet IIc color scanner. The program is called (I believe)
MacDendro (for the Mac), and WinDendro (for Windows - we have this
version).
I don't use this software, but for the fun of it, I tried manually
scanning a small portion of a disc, to see what I could do with it
just with C programming. My results were pretty successful, but it
would take a lot of work to make a productive tool out of it. I was
able to make the program easily pick out the rings, simply by
detecting the darkest color in the variations of early wood to late
wood. By also scanning in a portion of a ruler, I could then
determine the width of each ring as well.
MR> I am looking for "basic" information on how discs are analyzed -
MR> I have no backgroung in forestry.
Me neither, so I can't help you with the analysis questions either.
Just thought I'd pass along my thoughts on the subject.
--- Ken Polsson - Stand Modelling Analyst - BC Ministry of Forests ---
--- kpolsson@galaxy.gov.bc.ca --- "The opinions expressed ---
--- CompuSpec BBS (604)479-0418 --- here are not necessarily ---
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