how to join the edges?

i have found the edge of an image using edge command .the lines are not properly connected .How to join those scattered lines...

Answer 1

[Matt J]

Possibly using IMCLOSE.

Answer 2

[Image Analyst]

You could use edge linking methods, such as those on Peter Kovesi's web site: http://www.csse.uwa.edu.au/~pk/Research/MatlabFns/#edgelink