installation and basic commands of ImageMagick

working_with_imagemagick.sh

#!/bin/bash
## This gist contains instructions about complete installation about ImageMagick, 
# a powerful open-source command line image editor tool


### installation ###
cd
sudo apt-get install build-essential checkinstall && sudo apt-get build-dep imagemagick -y

# get latest version of the imagemagic tar.gz file
wget http://www.imagemagick.org/download/ImageMagick.tar.gz
tar xzvf ImageMagick.tar.gz
cd ImageMagick-7.0.7-22
./configure --prefix=/opt/imagemagick-7.0 && make
sudo checkinstall

# change the above code regarding to your downloaded file's version number
# for successfull installation check following command
convert -version

# for complete installation check following command
display
identity
 
 # You can remove it from your system anytime using
 dpkg -r imagemagick-7.0.7
 
 ### some basic command line preprocessing
 # The two most common commands are 
 # - mogrify (overwrites the existing image) and 
 # - convert (saves the image as a new image without modifying the original image).
 
 ## image conversion 
 convert image.jpg image.png
 mogrify -format png image.jpg
 
 ## image croping (- crop WxH+X+Y)
 convert -crop 600x400+0+600 /img/input.png /img/output.jpg
 # Details: 600x400 is the crop size and the +0+600 is the coordiantes the top left corner.
 
 # for annotating images with text or other images
 convert 000000.png -gravity center -fill black -stroke red -strokewidth 5 -font Courier-New -pointsize 100 -annotate +20+20 "A Cup of Tea" output.png