imagemagick montage function

website : http://www.imagemagick.org/Usage/montage/#geometry_size

imagemagick is very important

My test:

montage *.jpg -geometry 500x500+2+2 re1.jpg %%% attentionn 500x500   x means the x character in keyboard not the *.  you can write the a image include four small

images.

I will use the imagemagick instead of PS for some image processing