I am using Montage command-line tool to merge the two jpg images. The output jpg contains the common strip present in the input jpgs. Below is the command to merge two jpgs:
montage -geometry 500 input1.jpg input2.jpg output.jpg
How can I avoid the common area in the output file? Is there any other tool available to auto-merge the two images?
In ImageMagick, you can simply append the two images side by side or top/bottom.
will do top/bottom
will do left/right.
You can append as many images as you want of different sizes. You can use the -gravity setting to align them as desired. If different sizes, then you will have background regions, which you can control the color by using -background somecolor. If desired, you can resize the images by adding -resize 500 after reading the inputs and before the append.
See http://www.imagemagick.org/Usage/layers/#append