how Thicken border 1-pixel wide with 2 pixels?

Hi how thicken border 1-pixel wide with 2 pixels with matlab? thanks

I=imread('image.jpg');
edg = edge(I,'log',0);

thankx

Answer 1

[Sean de Wolski]

doc imdilate

[Tomas]

thank you, I tried it but I haven't got a good result. There is another solution please

[Image Analyst]

That's the way to do it. Why was your result not good? Can you upload some example images illustrating why it's no good? What will you end up doing with this thickened image anyway?