How to convert binary image to graph?!

Hi every body...

Hi everybody,

Can you please help me to convert binary image results from Laplacian of Gaussian (LOG) filter. to graph?!

as that attached figure?! http://imageshack.us/photo/my-images/41/sww.png/

I don't know what function can perform like such operation, would you please help me;

Thanks A lot.....

http://imageshack.us/photo/my-images/41/sww.png

Answer 1

Neither do I. You'd have to supply more information. Why do you want to do that anyway?

would please think with me about that,

let's assume that we got the connecting component of the binary image through (cc = bwconncomp(bw, 4);) then i wana to graph those connected points using that function ([S, C] = graphconncomp(S);)... how can i do that?!...

About what i want to do, Look i am trying to detect some cyclic structure and meshes present in am image through different structure operations , simple representation for work structure represented at that image (stopped at : the convertion from binary to graph step): http://imageshack.us/content_round.php?page=done&l=img208/1244/tdh1.png

Thanks in advance

It's not clear from the figure. You'd have to read the paper more carefully.

Answer 2

hi,

You can convert the image to graph by simply plot the result as vector or matrix :

 I=imread('circuit.tif');
 figure, plot(I);
 figure, plot(I(:)), title('  Mapping operator');
 BB=im2bw(I);
 figure, plot(BB);
 F=sparse(BB);
 figure, spy(F);

Many other possibilities do exist, try those above and see .

The graph seems like it used random locations from only the boundary. I have no idea why -- but he may need to call bwboundaries() or bwperim() to get the boundary.