This is installable with just:

[dkg@metis ~]$ sudo apt-get install imagemagick
Reading package lists... Done
Building dependency tree... Done
Suggested packages:
The following NEW packages will be installed:
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 1332kB of archives.
After unpacking 3777kB of additional disk space will be used.
Get:1 breezy/main imagemagick 6: [1332kB]
Fetched 1332kB in 0s (2311kB/s)  

Preconfiguring packages ...
Selecting previously deselected package imagemagick.
(Reading database ... 68744 files and directories currently installed.)
Unpacking imagemagick (from .../imagemagick_6%3a6.2.3.4-1ubuntu1_i386.deb) ...
Setting up imagemagick ( ...

[dkg@metis ~]$