MATLAB: Morphological operation

Question

i have an image

http://imgur.com/1JK5Q

i want to perform morphological operation and need to get output image as

http://imgur.com/0QHCp

please help

Answer 1

one way

I = imread('1JK5Q.png');
BW = ~im2bw(I,.8);
BW1 = imdilate(BW,ones(1,4));