MATLAB Answers

Mariam Sheha

How to convert binary image to graph?

Asked by Mariam Sheha
on 30 Jun 2013

Hi everybody,

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

I don't know how to perform like such operation;

Thanks A lot.....

  0 Comments

1 Answer

Answer by Kevin
on 2 Jul 2013
 Accepted answer

So this is a Laplacian matrix? I suggest you decompose this: L=D-A, where D is the degree matrix and A is the adjacency matrix. Then use gplot, which graphs a adjacency matrix as a set of coordinates in a plane.

"help gplot" is your friend

KD

  3 Comments

Mariam Sheha
on 3 Jul 2013

I Think what you recommend is just brilliant , Really i am very very thankful....but would you please inform me more about how to get that (L)... assume that D is the matrix i got after "Laplacian" filter what is the adjacency matrix??!!

But really (gplot) is just perfect recommendation THANK YOU :)

Kevin
on 3 Jul 2013

It's easy to get L if you have A, but I don't think you can recover L from D. D is a diagonal matrix that has as the ith entry, the sum of the ith row of A.

Mariam Sheha
on 3 Jul 2013

what i had now is a binary image results from gaussian filter (as attached), do you know how to convert like such matrix to adjacency matrix??!! http://imageshack.us/content_round.php?page=done&l=img163/9633/j1m.png

Thanks in advance


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