How to fill a gap between line segments in an image

I am working on raster images. How I can fill up this gap between line segments, as shown in figure below.

the raster image file is enclosed. Kindly advice.

Answer 1

[Matt J]

load gap
Irasterl=imclose(Irasterl,ones(3));

imshow(Irasterl,[])

[Abdul Hannan Qureshi]

Thank you.

Answer 2

[Image Analyst]

For single pixel gaps you can also use bwmorph with the 'bridge' option.

Irasterl = bwmorph(Irasterl, 'bridge');

[Abdul Hannan Qureshi]

Thank you, I will try this as well.