Area filters when counting objects on an image
Posted by inaki-6 on Nov 15, 2007; 11:59am
URL: http://imagej.273.s1.nabble.com/Area-filters-when-counting-objects-on-an-image-tp3698002.html
Dear ImageJ users,
Im an ex ImageTool user, who is intending to use ImageJ to count beetles
on pictures taken to samples.
I downloaded ImageJ not so long ago, three days, and so far Ive managed to
count samples where the objects are completely separated. I adjust the
threshold and then analyse the particles. No problem with that, but when the
objects touch each other, or their out of a certain size range (ok, I can
say I want a certain range of areas to be counted, but I may have beetle
"rests" in my sample, that I need to analyse.
In ImageTool one could apply a filter (save the filter), and classify the
groups of objects regarding their size, so I could get a quite accurate
estimate of the number of beetles in that sample, even if they were
overlapped. This program even gave the display of the filtered sizes and so
on. But it was quite difficult to export data, and gave errors on my PC, so
I've decided to switch, but now I miss this options... Is there a way to
apply such filters? Any other suggestions to carry such analyses?
I guess this kind of questions are posted quite often, when I've searched
"count" on the mail list, I get quite a load of results... sorry if I had
not found the answer yet, but I'm in a kind of hurry...
Well, thanks a million in advance,
Greetings
Iñaki Etxebeste Larrañaga
M.Sc. Biologist
E T S II AA Universidad de Valladolid
Avda. Madrid 57
34071 Palencia (Spain)