How to mosaic two images with out overlapping

I have a two images like this.as a example a=[1 1 1 1;1 1 1 1;1 1 1 1;1 1 1 1]; b=[0 0 0 0;0 0 0 0;0 0 0 0;0 0 0 0]; (actual images are 256*256) I want to obtain image c=[1 1 1 1 0 0 0 0;1 1 1 1 0 0 0 0;1 1 1 1 0 0 0 0;1 1 1 1 0 0 0 0]; how can i do this?( i want to do this with out damaging the original pixel values)

Answer 1

[Image Analyst]

To stitch images together:

c = [a,b]; % horizontally

or

c = [a;b]; % vertically.

[mahesh chathuranga]

thank you very much.