how to draw lines of shortest distances on this image identifying a particular shape ?

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Shan Kapoor
Shan Kapoor 2012-1-9
Hi All,
I have an image on which i marked some points running "imregionalmax" function. like below
https://plus.google.com/photos/116243239493929305987/albums/5654551980894583617/5695615569581847202?banner=pwa
Now I want to join points on each black laths like this
https://plus.google.com/photos/116243239493929305987/albums/5654551980894583617/5695616729342773106?banner=pwa
I tried to write a code like below,
for p = 1:(length(trI)-1) y = [trI(p),trI(p+1)]; x= [trJ(p),trJ(p+1)]; linexy=line(x,y); plotline=plot (x,y);
end and I get an output like this.. https://plus.google.com/photos/116243239493929305987/albums/5654551980894583617/5695617771576908114?banner=pwa
how will I eliminate this situation of likes connecting between laths... it should be the shortest line in a single grain as shown in the expected results...
thanks in advance, Shanoob

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回答（1 个）

Michael
Michael 2012-1-10
An idea might be to rank pairs of points based on their proximity, then define some sort of cut-off below which the pair gets a line between them. Of course this method may lead to overlapping lines and you might need a second routine which disregards a pairing between two points who also have (shorter) pairings to a common 3rd point.
Just some ideas, not sure of the best way

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