Shape recognition to generate an outline of the geometry

Hi, 

I want to generate geometry from an image. I have tried shape recognition to extract the geometry from the image.

For ex. My image contains lot of intersecting lines. (as shown in this image https://www.dropbox.com/s/86oi2jbxtnjrk8v/LineNetwork.jpg?dl=0 )

And the contour generated using shape recognition in salome generates multiple edges corresponding to a line as shown in this figure ( https://www.dropbox.com/s/sgmy7btdennu3qa/contour_From_Shape_recognition?dl=0 )

Is there a way to merge those multiple lines so that I can get a single line corresponding to a line. 

Is there any option in the shape recognition algorithm to detect the lines. I could not find anything in the documentation related to the option shown in the GUI