This plugin for ImageJ takes a specific number of images and appends them. If you have two images you want to append and both contain 2 rows and 2 columns. Your resulting appended image will contain 2 rows and 4 columns.
To use this project, build it (or use the provided .class output file in this directory), take the Append_Images_.class from the following directory: Append_Images/target/classes. Place this file in the ImageJ plugins folder prior to boothing imageJ. (If running mac you may have to right click ImageJ and select "Show Package Contents").
This was developed for Dr. Isaac Barber-Axthelm in persuit of his research at the University of Washington.
This code is being provided with the "Unlicense" License.