CentOS 7 - CERN for x86_64: Letter I: ImageMagick-devel
ImageMagick-devel - Library links and header files for ImageMagick app development
ImageMagick-devel contains the library links and header files you'll
need to develop ImageMagick applications. ImageMagick is an image
If you want to create applications that will use ImageMagick code or
APIs, you need to install ImageMagick-devel as well as ImageMagick.
You do not need to install it if you just want to use ImageMagick,