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

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

Answer 1

[Michael]

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

[Shan Kapoor]

Hi Mike,

This method may solve my problem. could you please guide me the way I have to code this ? thank you.